London Breed

Born in San Francisco,{{Cite news|url=https://www.californiabirthindex.org/birth/london_n_breed_born_1974_12174666|title=California Birth Index, London N Breed, born 1974|work= California Birth Index|access-date=December 13, 2017|language=en-US}} Breed was raised by her grandmother in Plaza East public housing in the Western Addition neighborhood of the city. As a youth, Breed lived with three siblings (two brothers and a sister), along with an aunt who was facing mental health challenges.{{Cite web |last=Johnston |first=Madeleine |title=London Breed: How personal hardships inspired a political career |url=https://thelowell.org/8248/features/london-breed-how-personal-hardships-inspired-a-political-career/ |access-date=2024-06-16 |website=The Lowell}} Breed later wrote of her childhood in San Francisco, "five of us living on $900 per month. 'Recycling' meant drinking out of old mayonnaise jars. Violence was never far away. And once a week, we took Grandma's pushcart to the community room to collect government-issued groceries."{{Cite news|url=http://www.sfexaminer.com/powdered-milk-moving-vans-fight-affordable-housing/|title=Powdered milk and moving vans: The fight for affordable housing|work=The San Francisco Examiner|access-date=April 14, 2017|language=en-US|archive-date=July 18, 2018|archive-url=https://web.archive.org/web/20180718201519/http://www.sfexaminer.com/powdered-milk-moving-vans-fight-affordable-housing/|url-status=dead}} Her younger sister died of a drug overdose in 2006. Her brother, Napoleon Brown, is in prison serving a 44-year sentence for a 2000 conviction on charges of manslaughter and armed robbery, for which Breed has repeatedly asked for clemency from the governor's office.{{cite web|url=https://www.sfchronicle.com/news/article/London-Breed-cites-experience-transforming-SF-12806970.php|archive-url=https://web.archive.org/web/20180506024612/https://www.sfchronicle.com/news/article/London-Breed-cites-experience-transforming-SF-12806970.php|title=London Breed feels her life experience can guide the city: Raised on the rough side of San Francisco, she believes her bruised hometown can be made to shine once again|first=Heather|last=Knight|work=San Francisco Chronicle|date=April 6, 2018|access-date=June 13, 2018|archive-date=May 6, 2018}}{{Cite web|last=Phifer|first=Donica|date=December 19, 2018|title=San Francisco Mayor Asks Jerry Brown for Brother's Early Release From Prison, Ethics Questions Raised|url=https://www.newsweek.com/san-francisco-mayor-london-breed-asks-brothers-early-release-prison-ethics-1265448|website=Newsweek}} Breed has stated that her brother's early release from prison would be "what's best for both Napoleon and society overall".{{Cite news|url=https://www.nbcbayarea.com/news/local/san-francisco-mayor-london-breed-requests-brothers-early-release/200124/|title=San Francisco Mayor London Breed Requests Brother's Early Release }}

At age 14, Breed worked as a paid intern at The Family School as part of the Mayor's Youth Employment and Training Program. She graduated with honors from Galileo High School where she played in the band and participated in school government.{{Cite news|url=https://www.newsweek.com/who-london-breed-meet-san-franciscos-first-black-woman-mayor-976733|title=Meet London Breed, San Francisco's first black woman mayor|date=June 14, 2018|work=Newsweek|access-date=September 24, 2018|language=en}} Although she entered college as a chemistry major, she earned a bachelor's degree in political science–public service from the University of California, Davis in 1997{{Cite web|url=https://magazine.ucdavis.edu/londons-town/|title=London's Town|last=Beaudry|first=Jennifer Ernst|date=July 1, 2019|website=UC Davis Magazine|language=en-US|access-date=November 11, 2019}} and a master's degree in public administration from the University of San Francisco in 2012.{{cite news|last=Nevius|first=C.W.|title=London Breed is S.F.'s election shocker|url=http://www.sfgate.com/bayarea/nevius/article/London-Breed-is-S-F-s-election-shocker-4025223.php|access-date=September 19, 2013|newspaper=San Francisco Chronicle|date=November 10, 2012}} While in college, Breed babysat and cleaned houses to help pay for expenses. After college graduation, she said that "I just didn't want to be poor," especially witnessing her grandmother's financial struggles.

Breed worked as an intern in the Office of Housing and Neighborhood Services for Mayor Willie Brown. In 2002, she became the executive director of the African American Art & Culture Complex,{{cite news|last=Lagos|first=Marisa|title=London Breed's emphasis: kids' lives|url=http://www.sfgate.com/bayarea/article/London-Breed-s-emphasis-kids-lives-4147448.php|access-date=January 8, 2013|newspaper=San Francisco Chronicle|date=December 26, 2012}} where she raised over $2.5 million to renovate the complex's 34,000 square foot space, including an art gallery, theater space, and a recording studio.{{cite web|title=District 5 – Board of Supervisors|url=http://www.sfbos.org/index.aspx?page=13826|access-date=December 12, 2017|website=www.sfbos.org}} Breed was named to the San Francisco Redevelopment Agency Commission in 2004. In 2010, Mayor Gavin Newsom appointed her to the San Francisco Fire Commission.

File:London Breed.jpg

In November 2012, Breed was elected to the District 5 supervisor seat, defeating incumbent Christina Olague, who had been appointed to the seat that year by Mayor Ed Lee after Supervisor Ross Mirkarimi was elected sheriff. Following five rounds of ranked-choice voting allocations, Breed won by over 12 points.{{cite web|url=http://sfelections.org/results/20121106/data/d5.html|title=Board of Supervisors, District 5|website=sfelections.org|access-date=April 14, 2017}}

During her first few months as Supervisor in 2013, Breed persuaded city departments to complete two new bike lanes on Oak and Fell Streets ahead of schedule, prompting the local transportation site StreetsblogSF to say she had “emerged as a bicycling champion.”{{Cite news |date=May 10, 2013 |title=Bike to Work Day at City Hall: Lots of Pro-Bike Talk, Few Real Commitments |url=https://sf.streetsblog.org/2013/05/09/bike-to-work-day-at-city-hall-lots-of-pro-bike-talk-few-real-commitments/ |access-date=September 24, 2018 |work=Streetsblog San Francisco |language=en-US}} She secured federal funding for the redesign of Masonic Boulevard in her district,{{Cite news |title=Breed, Preston Exchange Jabs, Present Policies In District 5 Candidate Forum |url=https://hoodline.com/2016/09/breed-preston-present-policies-in-district-5-candidate-forum |access-date=September 24, 2018}}{{Cite web |title=2016 District 5 Candidate London Breed |url=https://sfbike.org/news/2016-district-5-candidate-london-breed/ |access-date=September 24, 2018 |website=sfbike.org |language=en-US}} which added bike lanes and traffic safety measures to one of the most dangerous corridors in the city.{{Cite web |title=Masonic Avenue |url=https://sfbike.org/our-work/street-campaigns/masonic-avenue/ |access-date=September 24, 2018 |website=sfbike.org |language=en-US}} The official ribbon-cutting for the completed Masonic Avenue Streetscape Improvement Project between Geary Boulevard and the Panhandle took place in August 2018. The project cost $25 million. The bicycle improvements were limited to a buffered bike lane, which typically cost $15,000 per mile.{{Cite news |date=August 14, 2018 |title=With ribbon cutting ceremony, Masonic corridor and plaza overhaul is complete |url=https://abc7news.com/traffic/with-ribbon-cutting-ceremony-masonic-corridor-and-plaza-overhaul-is-complete/3956393/ |access-date=September 24, 2018 |work=ABC7 San Francisco |language=en-US}}{{Cite web |title=Mayor London Breed Unveils Masonic Avenue Streetscape Improvement Project |url=https://sfmayor.org/article/mayor-london-breed-unveils-masonic-avenue-streetscape-improvement-project |access-date=September 24, 2018 |website=sfmayor.org |language=en}}

Breed was inaugurated as District 5 supervisor on January 8, 2013, with then–California Attorney General Kamala Harris administering the oath of office.{{Citation|last=THA DON Bowden|title=Inauguration Of London Breed District 5 Supervisor 2013|date=January 11, 2013|url=https://www.youtube.com/watch?v=fincAmhuZ3c|access-date=April 14, 2017}} On January 8, 2015, Breed was elected President of the San Francisco Board of Supervisors first by a vote of 8 to 3 and then unanimously. She defeated supervisor David Campos, who was also nominated for the position.{{Cite news|url=http://www.sfgate.com/politics/article/London-Breen-elected-president-of-S-F-Board-of-6002416.php|title=London Breed elected president of S.F. Board of Supervisors|work=SFGate|access-date=April 14, 2017}} Breed succeeded District Four Supervisor Katy Tang, who assumed the presidency temporarily after then-Board President David Chiu resigned to begin serving in the California Assembly.{{cite web|url=http://www.sfgate.com/politics/article/London-Breen-elected-president-of-S-F-Board-of-6002416.php|title=London Breed elected president of S.F. Board of Supervisors|date=January 9, 2015|access-date=December 12, 2017}}{{Cite news|url=http://www.sfgate.com/politics/article/SF-supervisors-side-with-hourly-workers-pass-new-5902252.php|title=SF supervisors elect Katy Tang as interim president|work=SFGate|access-date=April 14, 2017}}

Breed cosponsored 2014's Proposition A, a $500 million bond to fund street repaving, infrastructure repair, transit service improvements, and increased bicycle and pedestrian safety.{{Cite web |last= |first= |title=City and County of San Francisco - File #: 140509 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1797168&GUID=005EFA6F-DF49-449A-81F4-9DACBA9043F0&Options=ID%7CText%7C&Search=transportation+bond |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} It passed with 72% support.{{Cite web |title=Proposition A: San Francisco Transportation and Road Improvement Bond - San Francisco County, CA |url=http://www.smartvoter.org/2014/11/04/ca/sf/prop/A/ |access-date=September 24, 2018 |website=www.smartvoter.org}} She was also the deciding vote to place 2014's Proposition B on the ballot, which required transportation funding to be increased with population growth.{{Cite web |last= |first= |title=City and County of San Francisco - File #: 140556 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1801081&GUID=D13940B8-6401-40E0-8AB9-86F519B1BECB&Options=Advanced&Search= |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} It passed with 61% support{{Cite web |title=Proposition B: Adjusting Transportation Funding for Population Growth - San Francisco County, CA |url=http://www.smartvoter.org/2014/11/04/ca/sf/prop/B/ |access-date=September 24, 2018 |website=www.smartvoter.org}} and now provides approximately $25 million per year for transit, bike, and pedestrian improvements.{{Cite news |date=March 16, 2015 |title=Wiener's Prop B Yields More Money Than Expected for Muni, Safe Streets |url=https://sf.streetsblog.org/2015/03/16/wieners-prop-b-yields-more-money-than-expected-for-muni-safe-streets/ |access-date=September 24, 2018 |work=Streetsblog San Francisco |language=en-US}} When Kezar Drive, a major thoroughfare in her district, fell into disrepair, Breed addressed what she called a "case study in bureaucracy" between the Department of Public Works and Recreation and Parks Department and got the road repaved.{{Cite web |title=Supervisor Breed's December Newsletter |url=http://myemail.constantcontact.com/Supervisor-Breed-s-December-Newsletter.html?soid=1112374763389&aid=CwZD2r7VVsU |access-date=September 24, 2018 |website=myemail.constantcontact.com}}

In 2015, Breed helped pass "neighborhood preference" legislation to prioritize neighborhood residents for the affordable homes built in their community.{{Cite web |last= |first= |title=City and County of San Francisco - File #: 150622 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=2351862&GUID=3E0525C9-7B75-4AE6-9534-F6C22141F14E&Options=ID%7CText%7C&Search=preference |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} When the federal Department of Housing and Urban Development threatened to block the legislation, she flew to Washington, D.C., with a delegation of San Francisco officials and persuaded it to let the program proceed.{{Cite news |title=Feds To Allow Preferences For Low-Income Applicants In S.F. Housing Complex |url=https://www.npr.org/2016/09/23/495237494/feds-to-allow-preferences-for-low-income-applicants-in-s-f-housing-complex |access-date=September 24, 2018 |work=NPR.org |language=en}}{{Cite news |date=September 2, 2016 |title=HUD to rethink veto of SF's preference housing law |url=https://www.sfgate.com/bayarea/article/HUD-will-rethink-veto-of-SF-preferential-housing-9200758.php |access-date=September 24, 2018 |work=SFGate}} The program first went into effect for the Willie B. Kennedy apartments in Breed's district,{{Cite news |date=September 23, 2016 |title=Federal Officials Approve Preferences at New Senior Housing Complex in S.F. |url=https://www.kqed.org/news/11098610/federal-officials-approve-preferences-at-new-senior-housing-complex-in-s-f |access-date=September 24, 2018 |work=KQED |language=en-us}} with 39 units prioritized for community residents at risk of economic displacement.{{Cite web |title=Mayor Lee and Board President London Breed Celebrate Opening of Willie B. Kennedy Apartments |url=https://sfmayor.org/article/mayor-lee-and-board-president-london-breed-celebrate-opening-willie-b-kennedy-apartments |access-date=September 24, 2018 |website=sfmayor.org |language=en}}

San Francisco passed legislation in 2015 to create the Neighborhood Commercial Transit District in the Divisadero and Fillmore corridors in her district. The laws removed housing density caps, allowing more homes to be built on a given parcel without increasing the building's size or height.{{Cite web |last= |first= |title=City and County of San Francisco - File #: 150082 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=2144800&GUID=5BA9E7D4-41D2-45D3-AFA6-F73326F7FB4C&Options=ID%7CText%7C&Search=divisadero |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} The Affordable Divis group requested that Breed rescind the law, citing concerns about the availability of affordable units and lack of community input.{{Cite web |last=Sawyer |first=Nuala |date=November 2, 2015 |title=New Divisadero Density Zoning Prompts Local Backlash |url=https://hoodline.com/2015/11/new-divisadero-density-zoning-prompts-local-backlash |access-date=September 9, 2020 |website=Hoodline}}{{Cite news |title=Homes not cars on Divisadero |url=http://www.sfexaminer.com/homes-not-cars-divisadero-2/ |access-date=September 24, 2018 |work=The San Francisco Examiner |language=en-US}} She declined, citing the need for more homes in the city and conflicts with Proposition C from 2012.{{Cite web |last=admin |title=Supervisor Breed responds to request to rescind upzoning on Divisadero – Alamo Square |url=http://alamosquare.org/supervisor-breed-responds-to-request-to-rescind-upzoning-on-divisadero/ |access-date=September 9, 2020 |language=en-US}}

In April 2015, the city of San Francisco passed legislation to remove minimum parking space requirements for new buildings and allow unused parking spaces in existing buildings to be converted housing.{{Cite news |date=March 3, 2015 |title=Supervisor Breed Calls for Removing Some of SF's Parking Mandates |url=https://sf.streetsblog.org/2015/03/02/supervisor-breed-calls-for-removing-some-of-sfs-parking-mandates/ |access-date=September 24, 2018 |work=Streetsblog San Francisco |language=en-US}}{{Cite web |title=City and County of San Francisco - File #: 141266 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=2099515&GUID=5306C94C-2C31-407A-8157-F257DB8DDAA6&Options=ID%7CText%7C&Search=Off-Street+Parking+Exceptions |access-date=September 9, 2020 |website=sfgov.legistar.com}}

The San Francisco Fire Department's response times to emergency medical calls spiked dramatically in 2014, with ambulances often unavailable to respond. Breed was outspoken in demanding improvements, pushing then-Mayor Lee to do more, expressing a lack of confidence in Fire Chief Joanne Hayes-White,{{Cite web |last= |first= |title=City and County of San Francisco - File #: 141045 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1943108&GUID=228E15E8-B706-4DE1-B2DF-5AE7B4136309&Options=ID%7CText%7COther%7C&Search=fire+department |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} and generating press attention for the issue.{{Cite news |date=September 16, 2014 |title=S.F. supervisor says Fire Department puts public safety at risk |url=https://www.sfgate.com/bayarea/article/S-F-supervisor-says-Fire-Department-puts-public-5758555.php |access-date=September 24, 2018 |work=SFGate}} Breed fought for substantially more funding for emergency medical services,{{Cite news |title=SF Fire Department seeking more money for paramedics |url=http://www.sfexaminer.com/sf-fire-department-seeking-more-money-for-paramedics/ |access-date=September 24, 2018 |work=The San Francisco Examiner |language=en-US}} ultimately succeeding in getting $47.3 million invested to hire EMTs, paramedics, firefighters, and 911 dispatchers, as well as buy new ambulances and fire trucks, and improve SFFD facilities.{{Cite web |title=Mayor Lee Proposes $47.3M Funding for SFFD, Emergency Services |url=http://sfappeal.com/2015/05/mayor-lee-proposes-47-3m-funding-for-sffd-emergency-services/ |access-date=September 24, 2018 |website=sfappeal.com |language=en}} Breed has cited her work on this issue as helping to reduce ambulance response times by over 26%.{{Cite news |last=FOX |title=Who is Acting Mayor of San Francisco London Breed? |url=http://www.ktvu.com/news/who-is-acting-mayor-of-san-francisco-london-breed |access-date=September 24, 2018 |work=KTVU |language=en-US}}{{Cite web |title=SF Civil Grand Jury |url=http://civilgrandjury.sfgov.org/2014_2015/14-15_CGJ_Report_SFFD_What_Does_the_Future_Hold_%207_16_15.pdf}} Her work also helped her earn the sole endorsement of the San Francisco Firefighters Local 798 union in the 2018 mayoral election.{{Cite web |title=San Francisco Firefighters Local 798 |url=https://www.facebook.com/SFFFLocal798/photos/a.527016467410899.1073741878.323366234442591/1479665622145974/?type=3&theater |access-date=September 24, 2018 |website=www.facebook.com |language=en}}

In 2015, Breed worked with then-Mayor Ed Lee to help add 400 new police officers to the San Francisco Police Department.{{Cite news |date=July 29, 2015 |title=San Francisco Mayor Lee Signs Budget Without Cuts, Money For 400 More Police Officers |url=https://sanfrancisco.cbslocal.com/2015/07/29/san-francisco-mayor-ed-lee-budget-without-more-police-officers/ |access-date=September 24, 2018 |language=en}} After the shooting of Mario Woods by San Francisco police officers on December 2, 2015, Breed and Supervisor Malia Cohen passed a Resolution calling for a federal investigation of the shooting and a Department of Justice review of the SFPD's use of force policies.{{cite web |date=January 13, 2016 |title=Supervisor London Breed Calls for a Federal Investigation into the SFPD's Shooting Death of Mario Woods |url=http://www.sfexaminer.com/sf-board-of-supervisors-calls-for-federal-investigation-into-woods-shooting/ |url-status=dead |archive-url=https://web.archive.org/web/20180827075533/http://www.sfexaminer.com/sf-board-of-supervisors-calls-for-federal-investigation-into-woods-shooting/ |archive-date=August 27, 2018 |access-date=April 7, 2016 |website=SF Weekly}}{{Cite web |last= |first= |title=City and County of San Francisco - File #: 160028 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=2549366&GUID=5BA5A426-DDB8-439D-AF05-3172C54D9A69&Options=ID%7CText%7C&Search=woods |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} This ultimately resulted in 272 recommendations to improve the SFPD.{{Cite news |last=Lee |first=Vic |date=October 12, 2016 |title=DOJ report cites bias by San Francisco police |url=https://abc7news.com/news/doj-report-cites-bias-by-san-francisco-police/1551797/ |access-date=September 24, 2018 |work=ABC7 San Francisco |language=en-US}}

As part of an FBI investigation into public corruption and bid-fixing primarily involving then-State Senator Leland Yee,{{Cite news|url=https://www.washingtonpost.com/news/morning-mix/wp/2016/02/25/ex-calif-state-sen-leeland-yee-gun-control-champion-heading-to-prison-for-weapons-trafficking/|title=Ex-Calif. State Sen. Leland Yee, gun control champion, heading to prison for weapons trafficking|newspaper=Washington Post|language=en|access-date=September 24, 2018}} businessman Derf Butler was recorded talking about allegedly paying for access to Breed. According to court documents released in 2015, Butler told an FBI source that he "pays Supervisor Breed with untraceable debit cards for clothing and trips in exchange for advantages on contracts in San Francisco." The allegation was denied by Breed, who as a member of the Board of Supervisors had no role in contract selections,{{Cite web|url=http://library.amlegal.com/nxt/gateway.dll?f=jumplink$jumplink_x=Advanced$jumplink_vpc=first$jumplink_xsl=querylink.xsl$jumplink_sel=title;path;content-type;home-title;item-bookmark$jumplink_d=california(charter_sf)$jumplink_q=[field%20folio-destination-name:%272.114%27]$jumplink_md=target-id=JD_2.114|title=SF City Charter--non-interference}} and no evidence has ever been presented to substantiate it.{{Cite news|url=http://www.sfexaminer.com/mayor-city-officials-others-accused-of-wrongdoing-according-to-new-details-from-fbi-probe-into-shrimp-boy/|title=Public officials named in new findings from FBI probe of 'Shrimp Boy' Chow|work=The San Francisco Examiner|access-date=April 14, 2017|language=en-US|archive-date=June 24, 2018|archive-url=https://web.archive.org/web/20180624171257/http://www.sfexaminer.com/mayor-city-officials-others-accused-of-wrongdoing-according-to-new-details-from-fbi-probe-into-shrimp-boy/|url-status=dead}}

Breed was the lead sponsor and co-sponsor of two housing ballot measures: Proposition A in 2015, a $310 million bond for affordable housing which passed with 74% support,{{Cite news |title=City of San Francisco Housing Bond Issue, Proposition A (November 2015) - Ballotpedia |url=https://ballotpedia.org/City_of_San_Francisco_Housing_Bond_Issue,_Proposition_A_(November_2015) |access-date=September 24, 2018 |work=Ballotpedia |language=en-US}} and Proposition C in 2016, a $261 million housing bond that repurposed unused city bond funds for affordable housing and passed with 77% support.{{Cite news |title=San Francisco, California, Affordable Housing Bond Issue, Proposition C (November 2016) - Ballotpedia |url=https://ballotpedia.org/San_Francisco,_California,_Affordable_Housing_Bond_Issue,_Proposition_C_(November_2016) |access-date=September 24, 2018 |work=Ballotpedia |language=en-US}} Breed joined Supervisor Ahsha Safai in supporting the 2018 "Housing for All" ballot measure, Proposition D, to increase the city's tax on commercial rents to "raise about $100 million a year to pay for 10,000 low- and middle-income housing units and shelter accommodations for the city’s homeless population over the next decade."{{Cite news |date=January 17, 2018 |title=5 SF supervisors seek commercial property tax hike to pay for more housing |url=https://www.sfgate.com/bayarea/article/5-SF-supervisors-seek-commercial-property-tax-12502920.php |access-date=September 24, 2018 |work=SFGate}}{{Cite web |last= |first= |title=City and County of San Francisco - File #: 180075 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=3317289&GUID=48F179C3-D353-4A20-A86F-1C855CE6995B&Options=Advanced&Search= |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} After facing a competing tax increase measure, Prop D did not pass.{{Cite news |title=Housing tax measure failing, while competing childcare measure remains too close to call |url=http://www.sfexaminer.com/competing-measures-taxing-commercial-rents-childcare-housing-appear-failing/ |access-date=September 24, 2018 |work=The San Francisco Examiner |language=en-US}}

In February 2016, Breed announced her reelection bid to represent District 5. The top issues she identified in her announcement were building and protecting affordable housing, increasing public safety, improving environmental health, and modernizing public transportation.{{Cite news|url=http://hoodline.com/2016/02/london-breed-formally-announces-re-election-campaign-for-d5-supervisor|title=London Breed Formally Announces Re-Election Campaign For D5 Supervisor|access-date=April 14, 2017}} Dean Preston, an attorney, ran against her. Breed won reelection 52% to 48% on November 8, 2016, beating Preston in 46 of the district's 68 precincts.{{cite web|url=http://www.sfelections.org/results/20161108/data/20161206/d5/20161206_d5.html|title=RCV Results Summary Report for Board of Supervisors, District 5|website=www.sfelections.org|access-date=April 14, 2017}}{{cite web|url=http://thebaycitybeacon.com/32740/279542/a/sfbythenumbers-a-tale-of-two-incumbents|title=SFByTheNumbers: A Tale of Two Incumbents|website=thebaycitybeacon.com|access-date=April 14, 2017}}{{Dead link|date=March 2020 |bot=InternetArchiveBot |fix-attempted=yes }}

In 2017, Breed coauthored legislation to provide civil counsel for tenants facing eviction, reducing the chances of vulnerable tenants unfairly losing their homes.{{Cite news |date=November 14, 2017 |title=Right to attorney in evictions going before SF supervisors |url=https://www.sfchronicle.com/bayarea/article/Right-to-attorney-in-evictions-going-before-SF-12354557.php |access-date=September 24, 2018 |work=SFChronicle.com |language=en-US}} Voters approved a similar measure in June 2018, Proposition F.{{Cite news |title=San Francisco, California, Proposition F, City-Funded Legal Representation for Tenants Facing Eviction (June 2018) - Ballotpedia |url=https://ballotpedia.org/San_Francisco,_California,_Proposition_F,_City-Funded_Legal_Representation_for_Tenants_Facing_Eviction_(June_2018) |access-date=September 24, 2018 |work=Ballotpedia |language=en-US}}

Breed was unanimously reelected to another two-year term as Board President on January 9, 2017. No other supervisors were nominated for the position.{{Cite web |last=Sabatini |first=Joshua |title=Breed re-elected as SF's Board of Supervisors president |url=https://www.sfexaminer.com/news/breed-re-elected-as-sf-s-board-of-supervisors-president/article_6c630c65-3913-50cd-8964-40ed08f13fd5.html |access-date=2022-11-20 |website=San Francisco Examiner |date=January 9, 2017 |language=en}}

Following the death of Mayor Ed Lee on December 12, 2017, Breed became the city's Acting Mayor by virtue of her position as President of the Board of Supervisors.{{cite web|last1=Bulwa|first1=Demian|date=December 12, 2017|title=San Francisco Mayor Ed Lee dead at 65|url=http://www.sfgate.com/news/article/San-Francisco-Mayor-Ed-Lee-dead-at-65-12423708.php|access-date=December 12, 2017|work=SFGate}}{{cite news|date=December 12, 2017|title=Rules dictate how SF's next mayor may be chosen and how long they may serve|work=San Francisco Chronicle|url=http://www.sfchronicle.com/politics/article/Rules-dictate-how-SF-s-next-mayor-may-be-chosen-12425177.php|access-date=December 12, 2017}} She served in this position until January 23, 2018, when the Board of Supervisors selected Mark Farrell to serve as the interim "caretaker" mayor until a special election on June 5. Supervisors Aaron Peskin, Jane Kim (herself a candidate for Mayor), and others considered the progressive members of the board, sought to deny Breed the benefits of incumbency going into the election and to maintain a separation of powers between the positions of mayor and board president, both of which Breed occupied at the time.{{cite news|last=Shafer|first=Scott|date=January 23, 2018|title=Political Uproar as Mark Farrell Replaces London Breed as S.F. Mayor|work=KQED|url=https://ww2.kqed.org/news/2018/01/23/political-outrage-as-mark-farrell-replaces-london-breed-as-s-f-s-acting-mayor/}}{{cite news|last=Fagone|first=Jason|date=January 28, 2018|title=London Breed's sudden, short term as SF's acting mayor|newspaper=San Francisco Chronicle|url=http://www.sfgate.com/bayarea/article/London-Breed-s-sudden-short-term-as-SF-s-12531033.php?t=5f746d7330}} Progressive Supervisor Hillary Ronen delivered a speech accusing Breed of being supported by "white, rich men" and billionaires such as Ron Conway.{{Cite news|last1=Schnedier|first1=Benjamin|last2=Boone|first2=Alastaire|date=January 25, 2018|title=What Just Happened in San Francisco?|language=en-US|work=CityLab|url=https://www.citylab.com/equity/2018/01/what-just-happened-in-san-francisco/551501/|access-date=September 24, 2018}} Ronen's choice for interim mayor, Mark Farrell, was a white male venture capitalist whose firm Conway had invested in.{{Cite news|last=Matier & Ross|date=February 4, 2018|title=Left bounced Breed for Conway ties. Turns out he invested in Farrell's firm|language=en-US|work=San Francisco Chronicle|url=https://www.sfchronicle.com/bayarea/matier-ross/article/Left-bounced-Breed-for-Conway-ties-Turns-out-he-12549142.php|access-date=September 24, 2018}}

Breed ran in the mayoral special election held on June 5.{{cite web|last1=Fracassa|first1=Dominic|last2=Swan|first2=Rachel|date=January 5, 2018|title=London Breed says she's in the race for SF mayor|url=https://www.sfchronicle.com/bayarea/article/London-Breed-says-she-s-in-the-race-for-San-12476825.php|access-date=June 13, 2018|work=San Francisco Chronicle}} She led in the initial count's first-place votes with 35.6 percent, with Mark Leno in second with 25.9 percent, and Kim with 22.8 percent. Leno took the lead early the next day after the initial tabulation of ranked-choice ballots,{{cite web|last=Fracassa|first=Dominic|date=June 6, 2018|title=SF mayor's race: Ranked choice puts Mark Leno in lead over London Breed|url=https://www.sfchronicle.com/politics/article/SF-mayor-s-race-Ranked-choice-puts-Mark-Leno-12970895.php|website=San Francisco Chronicle}} but Breed retook the lead on June 9.{{cite web|last=Fracassa|first=Dominic|date=June 9, 2018|title=As Breed regains slim lead, mayoral cliffhanger echoes Oakland's 2010 race|url=https://www.sfchronicle.com/politics/article/SF-ranked-choice-mayoral-election-cliffhanger-12981526.php|website=San Francisco Chronicle}} On June 13, with 9,000 ballots left to count, Leno conceded defeat and congratulated Breed on her victory.{{cite web|date=June 13, 2018|title=London Breed Claims Victory In San Francisco Mayor's Race|url=http://sanfrancisco.cbslocal.com/2018/06/13/sources-mark-leno-to-concede-in-san-francisco-mayors-race/|access-date=June 13, 2018|website=KPIX-TV}}{{Cite news|date=June 13, 2018|title=London Breed poised to become SF's next mayor|work=KGO-TV|agency=AP News|url=https://abc7news.com/politics/mark-leno-concedes-after-close-sf-mayors-race/3598346/}} Breed resigned as president of the Board of Supervisors on June 26, 2018 and was succeeded by Malia Cohen in a unanimous vote by the Board. Breed retained her position as District 5 supervisor until assuming the mayoralty on July 11.{{cite news|last1=Fracassa|first1=Dominic|date=June 26, 2018|title=SF supervisors elect Malia Cohen their president as Breed set to become mayor|work=San Francisco Chronicle|url=https://www.sfchronicle.com/bayarea/article/SF-supervisors-elect-Malia-Cohen-their-president-13028989.php|access-date=June 26, 2018}} Breed was elected to a full term in the 2019 mayoral election against five relatively unknown candidates.{{cite news|date=November 7, 2019|title=San Francisco's first black female mayor wins reelection|work=CBS News|agency=AP News|url=https://www.cbsnews.com/news/san-francisco-election-london-breed-first-black-female-mayor-wins-reelection/|access-date=November 27, 2019}}

In March 2019, Breed awarded a posthumous certificate of honor to Sinn Féin politician and former IRA member Martin McGuinness for his "courageous service in the military".{{Cite web|last=Fracassa|first=Dominic|date=March 12, 2019|title=San Francisco honor for late Irish leader and IRA member causes international uproar|url=https://www.sfchronicle.com/bayarea/article/SF-Mayor-Breed-s-commemoration-of-Irish-13680541.php|access-date=September 9, 2020|website=San Francisco Chronicle|language=en-US}} The nomination had been made by the United Irish Societies, who had appointed him honorary marshal in the St. Patrick's Day parade.{{cite news|last=Nuala Sawyer|first=Bishari|date=March 11, 2019|title=S.F. Issues Posthumous Certificate of Honor for Irish Politician with Ties to IRA|work=SF Weekly|url=https://www.sfweekly.com/news/s-f-mayor-issues-posthumous-certificate-of-honor-for-irish-politician-with-ties-to-ira/|access-date=December 4, 2019}} She apologized two days later following controversy over McGuinness's involvement with the IRA.{{cite news|date=March 12, 2019|title=US mayor's apology for McGuinness award 'not enough'|work=BBC News|url=https://www.bbc.com/news/uk-northern-ireland-foyle-west-47521926|url-status=live|access-date=June 3, 2020|archive-url=https://web.archive.org/web/20200603014621/https://www.bbc.com/news/uk-northern-ireland-foyle-west-47521926|archive-date=June 3, 2020}}

On March 7, 2019, Breed and several other Northern California mayors endorsed Kamala Harris for president in the 2020 Democratic Party presidential primaries.{{Cite web|last=Wildermuth|first=John|date=March 8, 2019|title=Kamala Harris endorsed by SF, Oakland, San Jose mayors|url=https://www.sfchronicle.com/politics/article/Kamala-Harris-endorsed-by-SF-Oakland-San-Jose-13671164.php|access-date=October 4, 2021|website=San Francisco Chronicle|language=en-US}} Harris later dropped out of the race. On January 23, 2020, Breed endorsed Mike Bloomberg for president in the primaries.{{cite web|last=Garofoli|first=Joe|date=January 23, 2020|title=San Francisco Mayor London Breed endorses Mike Bloomberg for president|url=https://www.sfchronicle.com/politics/article/San-Francisco-Mayor-London-Breed-endorses-Mike-14996690.php|access-date=January 27, 2020|website=San Francisco Chronicle}}

In December 2020, Governor Gavin Newsom announced that Alex Padilla would succeed Kamala Harris as U.S. senator after she was elected to serve as Vice President of the United States. Breed and former San Francisco mayor Willie Brown expressed disappointment that the replacement for the seat was not an African American woman as Harris was the only African American woman serving in the Senate at the time.{{Cite web|url=https://www.sfgate.com/politics/article/London-Breed-Alex-Padilla-Senate-California-react-15822677.php|title=London Breed: Alex Padilla's Senate appointment 'unfortunate' and a 'real blow'|author=Eric Ting|access-date=September 23, 2021|date=December 22, 2020|work=San Francisco Chronicle}}{{Cite web|url=https://abc7news.com/alex-padilla-kamala-harris-london-breed-barbara-lee/8984796/|title='A real blow': San Francisco mayor disappointed by Alex Padilla's nomination to US Senate|access-date=September 23, 2021|date=December 23, 2020|author=Alix Martichoux, Kris Reyes|work=ABC News}}

In the 2024 US presidential election, Breed quickly endorsed Kamala Harris once Joe Biden had dropped out.{{Cite web |date=2024-07-22 |title=Majority of pledged Democratic delegates back Harris for presidential nomination |url=https://www.nbcnews.com/politics/2024-election/democrats-coalesce-harris-nomination-rcna163027 |access-date=2024-11-08 |website=NBC News |language=en}}

In 2024, she ran for re-election in against a crowded field of candidates, including several moderate Democrats with similar policy positions to herself. She conceded the race to Democrat Daniel Lurie on November 7, 2024.

On February 25, 2021, Breed announced the "Dream Keeper" initiative to invest $120 million dollars from former law enforcement budgets into revitalization of San Francisco's black community. [https://www.kqed.org/news/11862094/sf-mayor-breed-unveils-plan-for-reinvesting-120-million-from-police-into-black-communities SF Mayor Breed Unveils Plan for Reinvesting $120 Million From Police Into Black Communities] February 25, 2021. KQED. Matthew Green. A 2024 investigation by the San Francisco Chronicle alleged improper financial conduct and prohibited purchases. [https://www.sfchronicle.com/sf/article/marthas-vinyard-rental-questions-spending-19743302.php What a $10,000 Martha’s Vineyard rental says about S.F. department’s spending] Michael Barba, St. John Barned-Smith. October 11, 2024. The San Francisco Standard also reported that the former Human Rights Commissioner, Sheryl Davis, approved contracts from Collective Impact, a nonprofit ran by James Spingola (who shared a living space with Davis). [https://sfstandard.com/2024/09/12/san-francisco-dream-keeper-initiative-sheryl-davis-james-spingola-nonprofit/ City official on leave after signing off on $1.5M in grants to man she shared home with] September 12, 2024. Noah Baustin, Gabe Greschler Breed argued that funding was paused before the discrepancy was discovered, but her detractors called for a federal corruption investigation. [https://www.kqed.org/news/12004947/sf-mayor-breed-pushes-back-against-corruption-criticism-from-opponents SF Mayor Breed Pushes Back Against Corruption Criticism From Opponents] September 17, 2024. Elize Manoukian. KQED In December 2024, the city canceled several contracts with Collective Impact, citing "significant conflicts of interest."{{Cite web |last1=Barned-Smith |first1=St. John |last2=Barba |first2=Michael |date=2024-12-10 |title=S.F. agencies cancel contracts with major nonprofit accused of enriching a former department head |url=https://www.sfchronicle.com/politics/article/s-f-agencies-cuts-ties-with-collective-impact-19971663.php |access-date=2024-12-11 |website=San Francisco Chronicle |language=en}} Spingola rejected accusations of wrongdoing and likened the affair to "an attack on Black people."

In July 2019, Breed signed an ordinance effectively banning the sale of e-cigarettes in San Francisco, both at brick-and-mortar stores and online to a San Francisco address.{{cite news |last=Nedelman |first=Michael Nedelman |title=San Francisco mayor signs ban on e-cigarettes sales |url=https://www.cnn.com/2019/07/01/health/san-francisco-mayor-ecigarette-ban-bn/index.html |access-date=July 8, 2019 |website=CNN}}

In 2021, Breed announced a State of Emergency in the Tenderloin in order to more efficiently implement her Tenderloin Intervention Plan, which included conducting extensive community outreach, engaging in direct intervention on the “most destructive” problems facing the Tenderloin community, and finally, implementing sustained public safety and accessibility operations.{{Cite web |title=Mayor London Breed Declares State of Emergency in the Tenderloin |url=https://sfmayor.org/article/mayor-london-breed-declares-state-emergency-tenderloin |access-date=2024-09-27 |website=sfmayor.org}} After the 90-day State of Emergency concluded, ABC7 reported that significant progress had been made in the area, stating that “Eleven-thousand grams of fentanyl have been seized and ten percent of drug users who have come to get help have agreed to some kind of treatment or medical care.”{{Cite web |date=2022-03-16 |title=SF says Tenderloin's emergency declaration improved conditions, but still long road ahead |url=https://abc7news.com/tenderloin-state-of-emergency-sf-san-francisco/11654510/ |access-date=2024-09-27 |website=ABC7 San Francisco |language=en}}

In late 2023, Breed announced the creation of a new Joint Task Force with SFPD, the San Francisco District Attorney’s Office, the California Highway Patrol, and the California National Guard in order to combat the opioid epidemic.{{Cite web |title=San Francisco Partners with the State to Announce New Joint Task Force that will Focus Investigations on Opioid Drug Overdose Deaths |url=https://www.sf.gov/news/san-francisco-partners-state-announce-new-joint-task-force-will-focus-investigations-opioid |access-date=2024-09-27 |website=www.sf.gov}}

On September 26, 2024, the San Francisco Examiner reported that San Francisco’s 2024 crime rate at its the lowest in 10 years, and that if the murder rate continued its current trend, the City was on track to see “the lowest number of reported homicides since 1960.”{{Cite web |first=Keith |last=Menconi |date=2024-09-26 |title=Falling SF crime rates add election wrinkle |url=https://www.sfexaminer.com/news/politics/sf-crime-rates-drop-while-voters-prioritize-public-safety/article_6df674fe-7b8e-11ef-a982-63d900366b3f.html |access-date=2024-09-27 |website=San Francisco Examiner |language=en}} The drop in reported crime rates included a 14% drop in the rate of violent crime and a 34% drop in the rate of property crime as compared to the same period of 2023.

In order to combat a wave of retail thefts, Breed instituted a “Retail Theft Blitz.” In November 2023, the Mayor’s office reported that the effort resulted in over three hundred arrests during 2023 alone.{{Cite web |title=San Francisco Police Retail Theft Blitz Operations Result in Hundred of Arrests, Expanding with New State Funding |url=https://www.sf.gov/news/san-francisco-police-retail-theft-blitz-operations-result-hundred-arrests-expanding-new-state |access-date=2024-09-27 |website=www.sf.gov}} Breed also sponsored Proposition E,{{Cite web |title=Proposition E: Police Department Policies and Procedures [March 2024 Election] |url=https://www.sf.gov/information/proposition-e-police-department-policies-and-procedures-march-2024-election |access-date=2024-09-27 |website=www.sf.gov}} which San Francisco voters approved on March 5, 2024 with a 9-point margin.{{Cite web |title=San Francisco, California, Proposition E, Limit Police Department Administrative Task Time and Increase Use of Camera and Drone Technology Initiative (March 2024) |url=https://ballotpedia.org/San_Francisco,_California,_Proposition_E,_Limit_Police_Department_Administrative_Task_Time_and_Increase_Use_of_Camera_and_Drone_Technology_Initiative_(March_2024) |access-date=2024-09-27 |website=Ballotpedia |language=en}} This proposition authorized the San Francisco Police Department to utilize drones instead of or in addition to car chases, and allowed SFPD officers to engage in more efficient reporting practices.{{Cite web |title=Proposition E: Police Department Policies and Procedures [March 2024 Election] |url=https://www.sf.gov/information/proposition-e-police-department-policies-and-procedures-march-2024-election |access-date=2024-09-27 |website=www.sf.gov}} On August, 29th, 2024, the City reported that auto break-ins dropped 57% compared to the same period in 2023, thanks in part to the use of drones, automated license plate readers, and bait operations.{{Cite web |title=San Francisco Police Using New Technology to Target Auto Break-Ins, Making Arrests in Hotspot Areas |url=https://www.sf.gov/news/san-francisco-police-using-new-technology-target-auto-break-ins-making-arrests-hotspot-areas |access-date=2024-09-27 |website=www.sf.gov}}

Progressive activists criticized Breed for allegedly appealing to right-wing voters by reversing her support for the 2014 Proposition 47 (which had recategorized several nonviolent offenses including shoplifting as misdemeanors, rather than felonies), and endorsing the 2024 Proposition 36 (which repealed parts of Proposition 47).{{cite web | last=Phillips | first=Justin | title=London Breed is blurring the lines of what it means to be a moderate Democrat | website=San Francisco Chronicle | date=2024-02-12 | url=https://www.sfchronicle.com/bayarea/justinphillips/article/breed-sf-prop-47-18657022.php | access-date=2024-11-23}}

Mayor Breed is on record of supporting all housing, including affordable and market-rate housing, and has stated she would veto any "anti-housing" legislation that crossed her desk.{{Cite web |date=2024-03-27 |title=YIMBYs on their heels as race for mayor heats up |url=https://sfstandard.com/2024/03/27/yimbys-on-their-heels-after-lawmakers-kill-housing-veto/ |website=The San Francisco Standard |language=en}} In 2019, Breed sponsored a $600M housing bond which voters approved by a 42% margin.{{Cite web |title=Board of Supervisors votes unanimously to place $600 million Affordable Housing Bond on November ballot |url=https://www.sf.gov/news/board-supervisors-votes-unanimously-place-600-million-affordable-housing-bond-november-ballot |access-date=2024-09-29 |website=www.sf.gov}}{{Cite web |title=San Francisco, California, Proposition A, Bond Issue for Affordable Housing (November 2019) |url=https://ballotpedia.org/San_Francisco,_California,_Proposition_A,_Bond_Issue_for_Affordable_Housing_(November_2019) |access-date=2024-09-29 |website=Ballotpedia |language=en}} Breed also created the “30x30 Plan,” which would bring 30,000 new residents to San Francisco by 2030.{{Cite web |title=Mayor Breed Proposes Eliminating Office to Housing Conversion Fees to Advance "30 x 30" Plan for Downtown |url=https://www.sf.gov/news/mayor-breed-proposes-eliminating-office-housing-conversion-fees-advance-30-x-30-plan-downtown |access-date=2024-09-29 |website=www.sf.gov}} This was to be accomplished by converting office buildings to residential and commercial, constructing new student housing, and working with state leaders to create incentives for businesses to move to or remain in San Francisco's downtown.{{Cite web |title=30 x 30 |url=https://www.sf.gov/reports/july-2024/30-x-30 |access-date=2024-09-29 |website=www.sf.gov}} To facilitate the conversion of office buildings to residential uses, Breed implemented the Commercial to Residential Adaptive Reuse Program,{{Cite web |title=Downtown Adaptive Reuse Program |url=https://sfplanning.org/project/downtown-adaptive-reuse-program |access-date=2024-09-29 |website=sfplanning.org}} which streamlines the permitting and approval process to facilitate quicker construction of new housing.

Breed sponsored Proposition C in San Francisco's March, 2024 primary election, which gives a transfer tax exemption the first time commercial properties are converted into residential uses.{{Cite web |title=Proposition C: Real Estate Transfer Tax Exemption and Office Space Allocation [March 2024 Election] |url=https://www.sf.gov/information/proposition-c-real-estate-transfer-tax-exemption-and-office-space-allocation-march-2024 |access-date=2024-09-29 |website=www.sf.gov}} Proposition C passed with a 5% margin.{{Cite web |title=San Francisco, California, Proposition C, Real Estate Transfer Tax Exemption for Properties Converted from Commercial to Residential Use Initiative (March 2024) |url=https://ballotpedia.org/San_Francisco,_California,_Proposition_C,_Real_Estate_Transfer_Tax_Exemption_for_Properties_Converted_from_Commercial_to_Residential_Use_Initiative_(March_2024) |access-date=2024-09-29 |website=Ballotpedia |language=en}} Despite these new exemptions, according to the San Francisco Standard, current incentives are insufficient to facilitate new projects despite 13% of the City's office buildings being viable candidates for conversion.{{Cite web |date=2024-03-05 |title=San Francisco office conversions: Why so few projects? |url=https://sfstandard.com/2024/03/05/san-francisco-office-to-housing-conversions-prop-c/ |access-date=2024-09-29 |website=The San Francisco Standard |language=en}} On September 26, 2024, Mayor Breed and Supervisor Matt Dorsey (who represents much of Downtown and the Financial District) proposed legislation which would eliminate office to housing conversion fees. These fees typically account for $70,000-90,000 per unit in additional cost, according to the Mayor's office.

Breed is a major advocate for modular housing, arguing that it can be built more quickly and cheaply than conventional construction, helping the city create more housing sooner. As Acting Mayor, she announced a partnership with labor unions to build a modular housing factory in or near San Francisco.{{Cite news |date=January 23, 2018 |title=SF set to start process for building modular housing for formerly homeless |url=https://www.sfchronicle.com/bayarea/article/SF-set-to-start-process-for-building-modular-12516479.php |access-date=September 24, 2018 |work=SFChronicle.com |language=en-US}}

As Mayor, Breed aligned herself with pro-housing leaders like State Senator Scott Wiener and the SF YIMBY (Yes In My Back Yard) organization. Both Senator Wiener and SF YIMBY endorsed Breed's 2024 re-election campaign.{{Cite web |title=2024 General Election |url=https://www.sfyimby.org/endorsements/11-5-2024/#London%20Breed-1 |access-date=2024-09-29 |website=San Francisco YIMBY}}{{Cite news |title=Endorsements - London Breed for Mayor of San Francisco |url=https://www.londonformayor.com/endorsements/ |access-date=September 24, 2018 |work=London Breed for Mayor of San Francisco |language=en-US}} In her inaugural address on July 11, 2018, Breed said: “The politics of ‘no’ has plagued our city for far too long—‘not on my block, not in my backyard.’ We have made mistakes in the past by not moving housing production forward all over this city. I plan to change the politics of ‘no’ to the politics of ‘yes.’ Yes, we will build more housing.”{{Cite news |title=Mayor London Breed: 'Yes, we will build more housing |url=https://sf.curbed.com/2018/7/12/17564980/mayor-london-breed-housing-sf-san-francisco-housing |access-date=September 24, 2018 |work=Curbed SF}}

In 2024, Breed's Department of Planning advanced a new zoning plan in San Francisco which would facilitate reaching the 82,000 unit goal.{{Cite web |title=Expanding Housing Choice |url=https://sfplanning.org/project/expanding-housing-choice |access-date=2024-09-29 |website=sfplanning.org}} This plan includes increasing density along certain corridors in San Francisco's western neighborhoods, such as the Sunset, Richmond, and Lakeside, which are predominantly made up of single-family homes.{{Cite web |date=2024-06-07 |title=Angry San Francisco homeowners plot to kill city's rezoning plan |url=https://sfstandard.com/2024/06/07/san-francisco-zoning-housing-element-united-neighborhoods/ |access-date=2024-09-29 |website=The San Francisco Standard |language=en}} Under the new zoning plan, height and density restrictions are to remain in place in most of the Western portion of the city, except along transit corridors and certain corner lots.{{Cite web |title=Expanding Housing Choice |url=https://sfplanning.org/project/expanding-housing-choice#housing-element |access-date=2024-09-29 |website=sfplanning.org}}

In 2024, 72% of Muni riders rated Muni service as "good" or "excellent," the highest rating since Muni began collecting public opinion information in 2001.{{Cite web |date=2024-08-05 |title=Muni Somehow Scores Its Highest Rider Satisfaction Rate In 23 Years |url=https://sfist.com/2024/08/05/muni-somehow-scores-its-highest-rider-satisfaction-rate-in-23-years/ |access-date=2024-10-04 |website=SFist - San Francisco News, Restaurants, Events, & Sports |language=en}} As of 2023, San Francisco has over 75 miles of bus lanes,{{Cite web |last=Halls |first=Cassie |title=A Decade of Rolling out the Red Carpet for Riders |url=https://www.sfmta.com/blog/decade-rolling-out-red-carpet-riders |access-date=2024-10-04 |website=www.sfmta.com |language=en}} and the pace of bus lane rollout has increased dramatically under Breed.{{Cite web |last=Rhodes |first=Michael |title=Animated Map Shows Record Expansion of Transit Lanes |url=https://www.sfmta.com/blog/animated-map-shows-record-expansion-transit-lanes |access-date=2024-10-04 |website=www.sfmta.com |language=en}} Breed's SFMTA has created several Bus Rapid Transit routes, including the Van Ness Bus Rapid Transit corridor and the Geary Bus Rapid Transit corridor.

Breed carried multiple pieces of legislation allowing Muni to purchase hundreds of new buses and replace its entire fleet of trains. Introduced over several years, her legislation provided for 50 hybrid buses,{{Cite web |last= |first= |title=City and County of San Francisco - File #: 130977 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1486350&GUID=CC6A0072-6F06-4ADE-BCFE-8D57135B8393&Options=Advanced&Search= |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} 260 light rail vehicles,{{Cite web |last= |first= |title=City and County of San Francisco - File #: 140882 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1874316&GUID=E2D73527-77FE-4AA8-961F-94FB971654B4&Options=Advanced&Search |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} 61 hybrid buses,{{Cite web |last= |first= |title=City and County of San Francisco - File #: 141224 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=2075523&GUID=DEB3E966-DF92-490A-BC74-150B59C4E82E&Options=Advanced&Search= |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} 60 trolley buses,{{Cite web |last= |first= |title=City and County of San Francisco - File #: 130713 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1454769&GUID=7B183F3B-5F2C-4A10-B422-1A820C890D94&Options=Advanced&Search= |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} 98 hybrid buses,{{Cite web |last= |first= |title=City and County of San Francisco - File #: 150472 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=2280755&GUID=64A41332-442E-4EFE-9581-E172A61FC5CC&Options=Advanced&Search= |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} and 33 trolley buses. The 260 new light rail vehicles are slated to replace Muni's aging fleet of Breda trains, add 24 trains for the new Central Subway, and provide 85 more trains for added service throughout the system.{{Cite news |date=July 16, 2014 |title=SFMTA Board Approves Contract for New Fleet of Muni Metro Trains |url=https://sf.streetsblog.org/2014/07/15/sfmta-board-approves-contract-for-new-fleet-of-muni-metro-trains/ |access-date=September 24, 2018 |work=Streetsblog San Francisco |language=en-US}} Built by Siemens in Sacramento,{{Cite news |title=Muni's new future fleet debuts on the factory floor |url=http://www.sfexaminer.com/munis-new-future-fleet-debuts-factory-floor/ |access-date=September 24, 2018 |work=The San Francisco Examiner |language=en-US}} the new trains are lighter and quieter than the ones they replace and project to run almost 12 times longer before needing major repair.{{Cite news |last=fpadmin |date=January 13, 2017 |title=Your First New Muni Train is in San Francisco |url=https://www.sfmta.com/blog/your-first-new-muni-train-san-francisco |access-date=September 24, 2018 |work=SFMTA |language=en}} The first Siemens train went into service in San Francisco in 2017.{{Cite news |date=November 17, 2017 |title=New Muni train, designed to be quieter and more spacious, hit San Francisco streets |url=https://www.sfgate.com/bayarea/article/New-muni-train-san-francisco-quieter-space-12366662.php |access-date=September 24, 2018 |work=SFGate}}

Breed worked with the San Francisco Municipal Transportation Agency and Bay Area Rapid Transit and carried the legislation{{Cite web |last= |first= |title=City and County of San Francisco - File #: 161040 |url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=2849172&GUID=FF81155A-6E61-49E8-AAA1-2B77C65DEA51&Options=Advanced&Search= |access-date=September 24, 2018 |website=sfgov.legistar.com |language=en}} to add cellular service for riders on Muni's underground trains.{{Cite news |title=Cell service finally coming to Muni tunnels |url=http://www.sfexaminer.com/cell-service-finally-coming-muni-tunnels/ |access-date=September 24, 2018 |work=The San Francisco Examiner |language=en-US}}{{Cite news |last=fpadmin |date=October 25, 2016 |title=SF Supervisors Approve Plan for Muni's Subway Cell Service |url=https://www.sfmta.com/blog/sf-supervisors-approve-plan-munis-subway-cell-service |access-date=September 24, 2018 |work=SFMTA |language=en}} The lack of cell service has been a long-standing complaint by riders.{{Cite news |title=Underground Muni Riders To Finally Be Blessed With Cell Phone Service |url=http://sfist.com/2016/09/14/underground_muni_riders_to_finally.php |url-status=dead |archive-url=https://web.archive.org/web/20171105210217/http://sfist.com/2016/09/14/underground_muni_riders_to_finally.php |archive-date=November 5, 2017 |access-date=September 24, 2018 |work=SFist |language=en-US}}

Mayor London Breed has continued San Francisco’s commitment to Vision Zero, a pledge to eliminate injuries and deaths from road accidents. As of spring 2024, 72% of all bike lanes in San Francisco were built during Breed’s tenure as Mayor.{{Cite web |last=Breed |first=London |date=March 28, 2024 |title=Mayor London Breed 2024 Transportation Vision |url=https://londonbreed.medium.com/mayor-london-breed-2024-transportation-vision-58736d9e30f6 |access-date=October 5, 2024}} In 2018, Breed requested the SFMTA Board of Directors expedite their project delivery process.{{Cite web |last=Liang |first=Brian |title=Vision Zero Quick-Build Program {{!}} SFMTA |url=https://www.sfmta.com/vision-zero-quick-build-program |access-date=2024-10-05 |website=www.sfmta.com |language=en}} In response, the Board passed a resolution that enables the agency to deliver “Quick Build” projects. These projects are focused along high-injury corridors and are designed to be reversible and cheaply implemented.{{Cite web |last=Maguire |first=Tom |date=June 4, 2019 |title=Policy Considerations to Expedite Vision Zero Quick-Build Projects |url=https://www.sfmta.com/sites/default/files/reports-and-documents/2019/05/6-4-19_item_11_quick_build_projects_-_slide_presentation.pdf |access-date=October 5, 2024}} As of Spring, 2024, the City has completed 39 Quick Build projects.

In an effort to create more outdoor community spaces during the 2020 COVID-19 pandemic lockdown, Breed closed 1.5 miles of JFK Promenade to cars. She introduced legislation to the Board of Supervisors on April 28, 2022, to ensure that JFK Promenade would remain a car-free community space.{{Cite web |title=JFK Promenade {{!}} San Francisco Recreation and Parks, CA |url=https://sfrecpark.org/1538/JFK-Promenade |access-date=2024-10-05 |website=sfrecpark.org}} In November, 2023, San Francisco voters approved Proposition J with 63% of the vote, extending car-free JFK indefinitely.{{Cite web |title=CNU |url=https://www.cnu.org/ |access-date=2024-10-05 |website=CNU |language=en}} Due to JFK’s closure to cars, there is an uninterrupted car-free path from the Panhandle to Ocean Beach (4.6 miles).{{Cite web |title=JFK Promenade |url=https://kidsafesf.com/jfk |access-date=2024-10-05 |website=Kid Safe SF |language=en-US}} Breed also supports further efforts to create more pedestrian spaces around the city. In her 2024 Transportation Vision, she voiced support for banning cars along parts of Haight Street and in North Beach.{{Cite news |last=Cano |first=Richard |date=March 28, 2024 |title=Mayor Breed's new plan to reduce traffic deaths: Fewer right turns on red, car-free Haight Street |url=https://www.sfchronicle.com/sf/article/breed-vision-zero-19369313.php |access-date=October 5, 2024 |work=San Francisco Chronicle}}

Breed’s SFMTA also established the Slow Streets Program in 2020 in order to create a network of “safe, comfortable, low-vehicle-traffic routes” throughout San Francisco, to facilitate active modes of transportation such as biking and walking. The Slow Streets Program was an immediate success, with a 2021 SFMTA study finding that average vehicle speeds decreased by 14% and collisions decreased by 36%.{{Cite web |last=Barnett |first=Ben |title=Slow Streets Program {{!}} SFMTA |url=https://www.sfmta.com/projects/slow-streets-program |access-date=2024-10-05 |website=www.sfmta.com |language=en}}

Under Breed, San Francisco has begun to install speed cameras. Until 2024, this was banned by state law, and San Francisco is one of five Californian cities to begin installing speed cameras,{{Cite web |last=Coplon |first=Dovid |title=Speed Safety Cameras {{!}} SFMTA |url=https://www.sfmta.com/projects/speed-safety-cameras |access-date=2024-10-05 |website=www.sfmta.com |language=en}} which have proven effective in reducing traffic speeds and fatalities in other cities.{{Cite journal |last1=Pilkington |first1=Paul |last2=Kinra |first2=Sanjay |date=2005-02-10 |title=Effectiveness of speed cameras in preventing road traffic collisions and related casualties: systematic review |url=https://www.bmj.com/content/330/7487/331.full |journal=BMJ |language=en |volume=330 |issue=7487 |pages=331–334 |doi=10.1136/bmj.38324.646574.AE |issn=0959-8138 |pmid=15653699|pmc=548724 }}

On September 26, 2024, Breed announced that her administration is on track to increase San Francisco's shelter capacity by 90% by 2025, three years ahead of schedule.{{Cite web |title=Mayor Breed Announces New Shelter Expansion Plans as San Francisco on Track to Reach Homeless Shelter Goal Three Years Early |url=https://www.sf.gov/news/mayor-breed-announces-new-shelter-expansion-plans-san-francisco-track-reach-homeless-shelter |access-date=2024-09-29 |website=www.sf.gov}} Since Breed became Mayor in 2018, the City has given shelter to nearly 10,000 individuals, and helped 5,250 people move into housing.{{Cite news |last=Baker |first=Alex |date=September 19, 2024 |title=SF mayor announces plans to double goal for city's number of homeless shelters |url=https://www.kron4.com/news/bay-area/sf-mayor-announces-plans-to-double-goal-for-citys-number-of-homeless-shelters/ |access-date=October 3, 2024 |work=KRON4}} As of 2024, San Francisco's street homelessness rate was at its lowest point in 10 years.

Breed has made homelessness a focus in her administration. In October 2018, she announced plans to build 1,000 shelter beds by 2020.{{cite news|last1=Fracassa|first1=Dominic|date=October 3, 2018|title=SF Mayor Breed envisions adding 1,000 beds for the homeless by end of 2020|work=San Francisco Chronicle|url=https://www.sfchronicle.com/bayarea/article/London-Breed-expected-to-set-goal-of-adding-1-000-13279982.php}} To help achieve this goal, she introduced legislation declaring a shelter crisis in San Francisco,{{cite news|last1=Fracassa|first1=Dominic|date=January 15, 2019|title=SF Mayor London Breed aims to cut red tape to help homeless faster|work=San Francisco Chronicle|url=https://www.sfchronicle.com/bayarea/article/Mayor-s-bills-would-cut-red-tape-help-homeless-13533569.php}} which allows the city to waive certain permitting and contracting requirements for homeless services. She also has worked to expand mental health and substance abuse recovery beds.{{cite news |last1=Fraccassa |first1=Dominic |title=S.F. working to double beds at crucial homeless facility |url=https://www.sfchronicle.com/bayarea/article/S-F-working-to-double-beds-at-crucial-homeless-13346396.php |publisher=San Francisco Chronicle}} When the Controller found an extra $415 million in property taxes, Breed introduced legislation to fund housing and homelessness programs with the discretionary portion of the funding.{{cite news|last1=Thadani|first1=Trisha|last2=Fracassa|first2=Dominic|date=December 5, 2018|title=SF mayor, supes differ on use of city's $181 million windfall: Let wrangling begin|work=San Francisco Chronicle|url=https://www.sfchronicle.com/politics/article/SF-mayor-supes-differ-on-divvying-up-181-13443089.php}} She also authored legislation with Supervisor Rafael Mandelman to expand San Francisco's conservatorship laws,{{cite news|date=October 31, 2018|title=San Francisco Mayor Seeks More Homeless Housing Through Conservatorship Law|work=KPIX-TV|url=https://sanfrancisco.cbslocal.com/2018/10/31/san-francisco-mayor-seeks-more-homeless-housing-through-conservatorship-law/}} based on California Senate Bill 1045, authored by State Senator Scott Wiener.

After the U.S. Supreme Court ruled in 2024 that municipalities can remove homeless encampments, Breed has advocated for and authorized sweeps of encampments.

During Breed's tenure, San Francisco increased access to shelter and housing for the homeless.{{Cite web |title=New Data: San Francisco Street Homelessness Hits 10-Year Low {{!}} San Francisco |url=https://www.sf.gov/news/new-data-san-francisco-street-homelessness-hits-10-year-low |access-date=2024-10-05 |website=www.sf.gov}} Due to these anti-homelessness efforts, San Francisco is the only Bay Area city that has a shrinking homelessness rate.{{Cite web |last1=Green |first1=Matthew |last2=Kelly |first2=Erika |date=2022-05-18 |title=More People Became Unhoused Across the Bay Area Over Last 3 Years — Except in SF |url=https://www.kqed.org/news/11914346/more-people-became-unhoused-across-the-bay-area-over-last-3-years-except-in-sf |access-date=2024-10-04 |website=www.kqed.org |language=en}}

San Francisco issued a state of emergency because of COVID-19 in February 2020, before the federal government suggested doing so, and San Francisco became one of the first American cities to go into lockdown.{{Cite web|date=February 26, 2020|title=San Francisco Declares Emergency Over 'Growing Likelihood' Of Coronavirus Cases|url=https://sanfrancisco.cbslocal.com/2020/02/26/coronavirus-san-francisco-emergency-mayor-london-breed/|access-date=April 12, 2020|language=en-US}} On March 2, Breed advised residents, "Prepare for possible disruption from an outbreak".{{cite news|date=April 9, 2020|title=Tweets show SF and NYC mayors' drastically different approaches to outbreak|work=San Francisco Chronicle|url=https://www.sfgate.com/bayarea/article/de-Blasio-London-Breed-tweets-coronavirus-March-2-15189898.php}}{{cite news|date=April 6, 2020|title=Resurfaced Tweets Show New York and San Francisco Mayors' Strikingly Different Coronavirus Messages on Same Day One Month Ago|work=Newsweek|url=https://www.newsweek.com/resurfaced-tweets-show-new-york-san-francisco-mayors-strikingly-different-coronavirus-messages-1496431}} Under the state of emergency, private gyms were required to shut down, but the city government petitioned Cal/OSHA for a waiver to allow various government employees to continue to use gyms in city-owned facilities, which were allowed to continue to operate.[https://www.nbcbayarea.com/news/local/san-francisco/san-francisco-government-buildings-keep-gyms-open-crush-private-gym-owners/2357438/ San Francisco Government Buildings Keep Gyms Open, Crush Private Gym Owners]{{Cite web |url=https://sfist.com/2020/09/02/sf-gym-owners-call-out-city-for-allowing-city-worker-gyms-to-open-when-they-cant/ |title=SF Gym Owners Call Out City For Allowing City-Worker Gyms to Open When They Can't |access-date=September 7, 2020 |archive-date=August 2, 2021 |archive-url=https://web.archive.org/web/20210802182021/https://sfist.com/2020/09/02/sf-gym-owners-call-out-city-for-allowing-city-worker-gyms-to-open-when-they-cant/ |url-status=dead }}

On April 24, 2020, Breed reported that her city's PPE orders had been diverted to other cities and countries. She said, "We’ve had issues of our orders being relocated by our suppliers in China. For example, we had isolation gowns on their way to San Francisco and they were diverted to France. We’ve had situations when things we’ve ordered that have gone through Customs were confiscated by FEMA to be diverted to other locations."{{Cite news|author=Tal Axelrod|date=April 24, 2020|title=San Francisco mayor says city's PPE orders have been diverted, confiscated: It 'blows my mind'|work=The Hill|url=https://thehill.com/homenews/state-watch/494623-san-francisco-mayor-says-citys-ppe-orders-have-been-diverted-confiscated|access-date=April 26, 2020}}

In November 2020, Breed attended an eight-person birthday party at the Michelin 3-star restaurant French Laundry in Napa County during the COVID-19 pandemic in California. The event was held in a partially enclosed room, despite California Department of Public Health discouraging such gatherings with a recommended three-household cap. Napa County allowed indoor dining at the time without a household cap. Still, Heather Knight of San Francisco Chronicle noted that the event violated San Francisco health guidelines at the time. San Francisco banned indoor dining three days later. Breed and other California politicians such as Governor Gavin Newsom and San Jose Mayor Sam Liccardo were criticized for not following the same public health guidelines they administered.{{Cite news|last=Wong|first=Julia Carrie|author-link=Julia Carrie Wong|date=December 2, 2020|title=Another California politician caught dining at French Laundry|language=en-GB|work=The Guardian|url=https://www.theguardian.com/us-news/2020/dec/01/san-francisco-mayor-london-breed-french-laundry-coronavirus|access-date=December 2, 2020|issn=0261-3077}}{{Cite web|last=Knight|first=Heather|date=December 2, 2020|title=S.F. Mayor London Breed had her own French Laundry party - the night after Gavin Newsom's|url=https://www.sfchronicle.com/bayarea/heatherknight/article/S-F-Mayor-London-Breed-had-her-own-French-15767506.php|access-date=December 2, 2020|website=San Francisco Chronicle|language=en-US}}

During the pandemic, sidewalks and parking spaces were turned into outdoor dining spaces. In 2021, Breed called for allowing small businesses to use sidewalk and parking spaces indefinitely as outdoor dining spaces.{{Cite news|last=Dineen|first=J. K.|date=May 26, 2021|title=Mayor Breed says she's battling S.F. supervisors to make outdoor dining parklets permanent|url=https://www.sfchronicle.com/local/article/Mayor-Breed-tells-Supervisors-to-make-parklets-16203119.php|access-date=May 26, 2021|website=San Francisco Chronicle|language=en-US}}

On September 16, 2021, videos surfaced showing Breed violating the city's mask mandate by not wearing a mask indoors while dancing at the Black Cat nightclub.{{Cite web|last=SFGATE|first=Eric Ting|date=September 17, 2021|title=SF mayor violates strict mask mandate, which city has yet to soften|url=https://www.sfgate.com/bay-area-politics/article/London-Breed-mask-mandate-San-Francisco-COVID-19-16467024.php|access-date=September 17, 2021|website=SFGATE|language=en-US}} She later explained the onstage reunion of the original members of Tony! Toni! Toné! "was something really monumental that occurred...I got up and started dancing because I was feeling the spirit and I wasn’t thinking about a mask."Archived at [https://ghostarchive.org/varchive/youtube/20211205/H03Ds3GNaBo Ghostarchive]{{cbignore}} and the [https://web.archive.org/web/20210920215520/https://www.youtube.com/watch?v=H03Ds3GNaBo Wayback Machine]{{cbignore}}: {{cite web| url = https://www.youtube.com/watch?v=H03Ds3GNaBo| title = Mayor Breed Addresses Mask Controversy | website=YouTube| date = September 17, 2021 }}{{cbignore}}

{{further|San Francisco Department of Public Works corruption scandal|San Francisco Ethics Commission#Mayor London Breed}}

A series of 2018 reports in the San Francisco Examiner focused on Breed's use of campaign funds carried over from previous years to pay for floats in San Francisco's annual Pride parade, and a 2020 report found that Nick Bovis, a restaurant owner arrested alongside Mohammed Nuru, was solely named on an invoice to pay for Breed's 2015 Pride float, when she was a member of the Board of Supervisors.{{cite news |last1=Fitzgerald Rodriguez |first1=Joe |date=August 1, 2018 |title=Ethics complaint targets Breed's use of old campaign committee to pay for Pride 2018 float — again |url=https://www.sfexaminer.com/news/ethics-complaint-targets-breed-s-use-of-old-campaign-committee-to-pay-for-pride-2018/article_815e7210-6063-57ad-a9d2-e7a01b24642d.html |publisher=SF Examiner}}{{cite news |last1=Fitzgerald Rodriguez |first1=Joe |date=February 18, 2020 |title=Emails reveal another FBI suspect may have given Mayor Breed a gift |url=https://www.sfexaminer.com/archives/emails-reveal-another-fbi-suspect-may-have-given-mayor-breed-a-gift/article_4ef599ae-b764-51d8-a25d-791df9e7430f.html |publisher=SF Examiner}}

Following the FBI's arrest of San Francisco Department of Public Works director Mohammed Nuru on corruption charges, Breed published an article on Medium on February 14, 2020, acknowledging a longtime friendship and a brief relationship with Nuru.{{Cite web |last=Breed |first=London |date=2020-02-14 |title=Transparency and Accountability |url=https://londonbreed.medium.com/transparency-and-accountability-11b885276564 |access-date=2024-05-28 |website=Medium |language=en}} The post also reported that Nuru gave Breed $5,600 for car repairs. Breed argued she did not have to disclose since her and Nuru's relationship preceded her mayoralty but was doing so in "the spirit of transparency".

A 2020 report in the San Francisco Chronicle found that the woman identified as "Girlfriend 1" by federal officials in the criminal complaint filed against Nuru was Sandra Zuniga, former Director of the city's "Fix-It Team" and of the Office of Neighborhood Services.{{cite news |last1=Fracassa |first1=Dominic |date=February 20, 2020 |title=Girlfriend in Nuru corruption complaint identified as SF official: 'Don't run your mouth' |url=https://www.sfchronicle.com/local-politics/article/Girlfriend-in-Nuru-corruption-complaint-15071812.php |publisher=SF Chronicle}} The Neighborhood Services Office was dissolved shortly after Zuniga was identified as "Girlfriend 1" and remains inactive.{{cite news |last1=Mullaney |first1=Alex |date=August 5, 2022 |title='We're the Mayor's Constituents, Too': Pandemic Drastically Reshapes Constituent Services for SF Neighborhoods |url=https://sfstandard.com/neighborhood-news/were-the-mayors-constituents-too-pandemic-drastically-reshapes-constituent-services-for-sf-neighborhoods/ |publisher=SF Standard}} In August 2021, Breed was fined $22,000 for abusing her office in a series of ethics violations.{{Cite web |date=August 3, 2021 |title=S.F. Mayor Breed to be fined nearly $23,000 for series of 'significant' ethics violations while in office |url=https://www.sfchronicle.com/bayarea/article/Mayor-Breed-fined-22-000-for-series-of-16360994.php}}

Breed's best-known environmental work is likely her successful fight to launch the city's clean electrical energy program, CleanPowerSF,{{Cite news|url=https://www.sfgate.com/politics/article/London-Breen-elected-president-of-S-F-Board-of-6002416.php|title=London Breed elected president of S.F. Board of Supervisors|date=January 9, 2015|work=SFGate|access-date=September 24, 2018}} a Community Choice Aggregation program in which San Francisco purchases renewable, greenhouse-gas-free electrical energy and makes it available to San Francisco ratepayers. Its ultimate goal is to achieve 100% clean electrical energy in the city. According to the San Francisco Department of the Environment's Climate Action Strategy: "Moving to 100% renewable electricity is the single biggest step the City can take to reduce GHG [Greenhouse Gas] emissions. The potential GHG emissions reduction from this program is estimated to total 941,000 metric tons (mT) of CO2e annually by 2030."{{Cite web|url=https://sfenvironment.org/sites/default/files/engagement_files/sfe_cc_ClimateActionStrategyUpdate2013.pdf|title=Climate Action Strategy}}

When Breed took office in 2013 CleanPowerSF had, according to the San Francisco League of Conservation Voters, "languished for 12 years" in the face of opposition from multiple mayoral administrations, the city's utility provider PG&E, and other business interests.{{Cite news|url=https://www.sflcv.org/blog/2018/4/23/june-2018-mayoral-endorsement-1-mark-leno-2-jane-kim-3-london-breed|title=June 2018 Mayoral Endorsement: #1 Mark Leno #2 Jane Kim #3 London Breed|work=San Francisco League of Conservation Voters|access-date=September 24, 2018|language=en-US}} "Breed took it upon herself to get CleanPowerSF off the ground," said the League of Conservation Voters.{{Cite news|url=https://www.sflcv.org/blog/2018/4/23/june-2018-mayoral-endorsement-1-mark-leno-2-jane-kim-3-london-breed|title=June 2018 Mayoral Endorsement: #1 Mark Leno #2 Jane Kim #3 London Breed|work=San Francisco League of Conservation Voters|access-date=September 24, 2018|language=en-US}}

Under the city's charter, the San Francisco Public Utilities Commission had ultimate authority to approve or reject the program.{{Cite web|url=http://library.amlegal.com/nxt/gateway.dll?f=templates&fn=default.htm&vid=amlegal:sanfrancisco_ca|title=American Legal Publishing - Online Library|website=library.amlegal.com|access-date=September 24, 2018}} When they rejected proposed power rates for the program in August 2013, Breed authored a resolution at the Board of Supervisors,{{Cite web|url=https://archives.sfexaminer.com/sanfrancisco/san-francisco-supervisors-decry-feet-dragging-on-cleanpowersf-rates/Content?oid=2582026|title=San Francisco supervisors decry feet-dragging on CleanPowerSF rates|last=Sabatini|first=Joshua|website=The San Francisco Examiner|date=September 19, 2013|language=en|access-date=September 24, 2018}} arguing: "In failing to set not-to-exceed rates for CleanPowerSF, the Public Utilities Commission is contradicting the policy directives of the Board of Supervisors...The Board of Supervisors refuses to acquiesce its policymaking authority to the Executive bureaucracy; and... If the Public Utilities Commissioners fail to set not-to-exceed rates, or hereafter fail in any way to timely implement CleanPowerSF, the Board of Supervisors shall, whether at the Board Chamber or the ballot, exercise every means at its disposal to enact its policy objective."{{Cite web|url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1473881&GUID=79072D36-7441-48C2-AC6E-4E9C9D5523FB&Options=Advanced&Search=|title=CleanPowerSF Resolution}}

Breed worked for the subsequent 17 months to launch CleanPowerSF, often fighting with the Lee administration.{{Cite news|url=https://www.sfgate.com/bayarea/article/Mayor-Lee-proposes-gutting-CleanPowerSF-energy-5443302.php|title=Mayor Lee proposes gutting CleanPowerSF energy program|date=April 30, 2014|work=SFGate|access-date=September 25, 2018}} In January 2015, Mayor Lee announced he would support a slightly revised version of CleanPowerSF, and the program proceeded toward launch.{{Cite web|url=https://archives.sfexaminer.com/sanfrancisco/mayor-board-president-signal-cleanpowersf-support/Content?oid=2917955|title=Mayor, board president signal CleanPowerSF support|last=Roberts|first=Chris|website=The San Francisco Examiner|date=January 27, 2015|language=en|access-date=September 25, 2018}}

In the summer of 2015, the International Brotherhood of Electrical Workers Local Union 1245, which represents PG&E employees, submitted a ballot measure, Proposition G, that would have imposed restrictions on CleanPowerSF.{{Cite news|url=https://ballotpedia.org/City_of_San_Francisco_%22Disclosures_Regarding_Renewable_Energy%22_Initiative,_Proposition_G_(November_2015)|title=City of San Francisco "Disclosures Regarding Renewable Energy" Initiative, Proposition G (November 2015) - Ballotpedia|work=Ballotpedia|access-date=September 25, 2018|language=en-US}} Breed and former Supervisor John Avalos wrote a competing measure, Proposition H, that would have required PG&E to disclose its use of nuclear power among other things.{{Cite news|url=https://ballotpedia.org/City_of_San_Francisco_Referred_Measure_Defining_%22Clean,_Green_and_Renewable_Energy,%22_Proposition_H_(November_2015)|title=City of San Francisco Referred Measure Defining "Clean, Green and Renewable Energy," Proposition H (November 2015) - Ballotpedia|work=Ballotpedia|access-date=September 25, 2018|language=en-US}} Following negotiations between IBEW representative Hunter Stern and Breed, Avalos, and their staff, IBEW agreed to oppose their own proposition and support Breed's measure. It passed with 80% support.{{Cite news|url=https://www.kqed.org/news/10590903/citys-cleanpowersf-program-central-to-upcoming-ballot-battle|title=Behind Props. G and H, Dueling S.F. 'Green' Energy Ballot Measures|date=November 2, 2015|work=KQED|access-date=September 25, 2018|language=en-us}}

In 2016, the city of San Francisco passed the nation's strongest ban on sale and use of products made from polystyrene foam,{{Cite news|url=https://www.nbcwashington.com/news/national-international/San-Francisco-Passes-Most-Expansive-Styrofoam-Ban-in-US--384896561.html|title=San Francisco Styrofoam Ban Said to Be Nation's Strictest|work=NBC4 Washington|access-date=September 25, 2018|language=en}} including expanded polystyrene foam (also called Styrofoam) for food service ware, egg cartons, coolers, and packing peanuts.{{Cite web|url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=2694234&GUID=1882054F-7F54-4117-BF9D-853FAC4A38CE&Options=ID%7CText%7C&Search=polystyrene|title=City and County of San Francisco - File #: 160383|last=|first= |website=sfgov.legistar.com|language=en|access-date=September 25, 2018}}{{Cite news|url=https://www.sfchronicle.com/bayarea/article/Foam-fight-SF-plan-would-ban-Styrofoam-7256229.php|title=Foam fight: SF plan would ban Styrofoam|date=April 19, 2016|work=SFChronicle.com|access-date=September 25, 2018|language=en-US}} The law made national news.{{Cite news|url=https://www.huffingtonpost.com/entry/san-francisco-ban-styrofoam_us_577548e4e4b0cc0fa136c064|title=San Francisco Just Issued The Country's Broadest Ban On Styrofoam|last=Ruiz-Grossman|first=Sarah|date=June 30, 2016|work=Huffington Post|access-date=September 25, 2018|language=en-US}}{{Cite news|url=https://www.motherjones.com/environment/2016/06/san-francisco-ban-styrofoam-polystyrene/|title=San Francisco just passed the nation's toughest ban on Styrofoam|work=Mother Jones|access-date=September 25, 2018|language=en-US}}{{Cite web|url=https://www.latimes.com/local/lanow/la-me-ln-san-francisco-enacts-extensive-foam-ban-20160709-snap-story.html|title=San Francisco enacts extensive ban on all things foam - Los Angeles Times|last=Poston|first=Ben|website=Los Angeles Times|date=July 9, 2016|access-date=September 25, 2018}}

In the final week of Breed's 2016 reelection campaign, she released a comical web video about the legislation, "Styrofoam Monster". In the ad, she chases away a bully who is dressed in a costume made of polystyrene foam. The San Francisco Chronicle wrote, "The award for most creative campaign ad goes to Board of Supervisors President London Breed..[It] is akin to an ingenious high school video production."{{Cite news|url=https://www.sfchronicle.com/politics/article/Styrofoam-monster-no-match-for-London-Breed-10594493.php|title='Styrofoam monster' no match for London Breed|date=November 4, 2016|work=SFChronicle.com|access-date=September 25, 2018|language=en-US}}

In 2015, the city of San Francisco passed legislation requiring drug manufacturers to fund a drug take-back program in San Francisco, enabling consumers to place unused medications in secure drop-off bins in pharmacies.{{Cite web|url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1946719&GUID=3383B563-7B6E-49F6-858C-6E56B399CA46&Options=ID%7CText%7C&Search=141095|title=City and County of San Francisco - File #: 141095|last=|first= |website=sfgov.legistar.com|language=en|access-date=September 25, 2018}} Unused drugs are often disposed in the trash or toilet which can pollute waterways or lead to accidental poisonings.{{Cite news|url=https://www.sfgate.com/bayarea/article/S-F-supes-weigh-expanding-safe-drug-disposal-6124224.php|title=S.F. supes weigh expanding safe drug disposal program|date=March 9, 2015|work=SFGate|access-date=September 25, 2018}} Breed published an op-ed in support of the legislation.{{Cite web|url=https://archives.sfexaminer.com/sanfrancisco/creating-safe-medicine-disposal-options/Content?oid=2921230|title=Creating safe medicine disposal options|last=Breed|first=London|website=The San Francisco Examiner|date=February 25, 2015|language=en|access-date=September 25, 2018}} It passed unanimously on March 17, 2015, making San Francisco only the third county in the nation to launch such a program.{{Cite web|url=https://sfgov.legistar.com/LegislationDetail.aspx?ID=1946719&GUID=3383B563-7B6E-49F6-858C-6E56B399CA46&Options=ID%7CText%7C&Search=141095|title=City and County of San Francisco - File #: 141095|last=|first= |website=sfgov.legistar.com|language=en|access-date=September 25, 2018}}{{Cite web|url=https://archives.sfexaminer.com/sanfrancisco/san-francisco-may-require-drug-companies-to-dispose-of-unwanted-drugs/Content?oid=2922028|title=San Francisco may require drug companies to dispose of unwanted drugs|last=Sabatini|first=Joshua|website=The San Francisco Examiner|date=March 2, 2015|language=en|access-date=September 25, 2018}}{{Cite web|url=https://blogs.wsj.com/pharmalot/2015/02/27/that-flushing-sound-san-francisco-moves-closer-to-a-take-back-program/|title=That Flushing Sound: San Francisco Moves Closer to a Take-Back Program|last=Silverman|first=Ed|date=February 27, 2015|website=WSJ|language=en-US|access-date=September 25, 2018}} The program has collected well over 20 tons of medications.{{Cite news|url=https://www.cleanwateraction.org/features/keeping-drugs-out-our-waterways-safe-drug-disposal-program|title=Keeping Drugs Out of Our Waterways: Safe Drug Disposal Program|date=February 9, 2016|work=Clean Water Action|access-date=September 25, 2018|language=en}}

Despite her environmental record during her first term on the Board of Supervisors, the local chapter of the Sierra Club endorsed her opponent.{{Cite news|url=https://www.sierraclub.org/san-francisco-bay/november2016endorsements|title=November 2016 Endorsements|date=August 8, 2016|work=Sierra Club|access-date=September 25, 2018|language=en}} This prompted Breed's then-Chief of Staff Conor Johnston to write a scathing article in the San Francisco Examiner accusing the local Sierra Club chapter of hypocrisy and "bewildering anti-environmentalism" for blocking new housing and engaging in "political tribalism".{{Cite news|url=http://www.sfexaminer.com/sf-sierra-club-puts-politics-planet/|title=SF Sierra Club puts politics over the planet|work=The San Francisco Examiner|access-date=September 25, 2018|language=en-US}}

Breed has explored multiple options for guaranteed income. In March 2021, Breed launched a program to provide guaranteed income to artists impacted by the COVID-19 pandemic.{{cite web | url=https://sf.gov/news/mayor-breed-announces-launch-guaranteed-income-pilot-program-san-francisco-artists | title=Mayor Breed announces launch of guaranteed income pilot program for San Francisco artists | San Francisco }} Then, in November 2022, Breed launched a program to provide income for low income transgender individuals.{{cite web | url=https://sfist.com/2022/11/16/mayor-breed-announces-guaranteed-income-program-for-low-income-trans-people/ | archive-url=https://web.archive.org/web/20221116232528/https://sfist.com/2022/11/16/mayor-breed-announces-guaranteed-income-program-for-low-income-trans-people/ | url-status=dead | archive-date=November 16, 2022 | title=Mayor Breed Launches Guaranteed-Income Program for Low-Income Trans People | date=November 16, 2022 }}

In September 2022, a public records request revealed Breed had required 48 of her appointees to boards and commissions to sign undated letters of resignation for her use. The Mayor's spokesperson stated the letters were only for "the most extreme circumstances."{{cite web |url=https://sfstandard.com/politics/whats-really-behind-the-mayors-spat-with-her-appointee-influence-over-sfpds-future-leadership/ |title=What's Really Behind the Mayor's Spat With Her Appointee? Influence Over SFPD's Future Leadership |author=Michael Barba |date=2022-09-23 |access-date=2022-12-14}} Breed later announced she would discontinue the practice.{{cite web |url=https://www.sfchronicle.com/bayarea/article/More-controversial-undated-resignation-letters-17487554.php |title=More controversial undated resignation letters from Mayor Breed's appointees unearthed |author=Mallory Moench |date=2022-10-05 |access-date=2022-12-14}}

{{Main|Panda diplomacy}}

At the end of the APEC United States 2023 summit, Breed requested pandas for San Francisco from Xi Jinping. In 2024, Breed traveled to China on a trip organized by the Chinese People's Association for Friendship with Foreign Countries in an attempt to procure pandas for the city.{{Cite news |last1=Hvistendahl |first1=Mara |author-link=Mara Hvistendahl |last2=Knight |first2=Heather |last3=Jolly |first3=Vik |date=December 19, 2024 |title=As China Seeks Influence, It Has a Cuddly Way Into City Hall: Pandas |url=https://www.nytimes.com/2024/12/19/world/asia/china-influence-city-local-government-pandas-intelligence.html |access-date=December 28, 2024 |work=The New York Times}}

The San Francisco Poop Patrol is a team established by Breed in 2018 to address the issue of human and animal waste on the city streets. The Poop Patrol consists of five employees from the Department of Public Works, along with a supervisor. They are tasked with proactively identifying and cleaning up waste in areas that receive the most complaints.{{cite web | last=Matthews | first=Mark | title=San Francisco Set to Roll Out the ‘Poop Patrol' to Clean Up Feces on Streets | website=NBC Bay Area | date=2018-08-14 | url = https://www.nbcbayarea.com/news/local/san-francisco-set-to-roll-out-the-poop-patrol/62986/ | access-date=2025-03-06}}{{cite web | last=Reilly | first=Katie | title=San Francisco to Launch 'Poop Patrol' to Clean Up Streets Amid Homelessness Crisis | website=TIME | date=2018-08-16 | url=https://time.com/5368610/san-francisco-poop-patrol-problem/ | access-date=2025-03-06}} The team uses steam cleaners to sanitize the streets after removing waste. The city allocated $830,977 for the program in its initial phase, with additional funds dedicated to expanding public restroom facilities and services like the Pit Stop program.{{cite web | last=Bendix | first=Aria | title=San Francisco has a 'Poop Patrol' to deal with its feces problem, and workers make more than $184,000 a year in salary and benefits | website=Business Insider | date=2018-08-23 | url=https://www.businessinsider.com/san-francisco-poop-patrol-employees-make-184000-a-year-2018-8 | access-date=2025-03-06}} Breed tweeted about the Poop Patrol: “This is another step to keeping our streets clean and providing additional help to areas in need of attention”

In the year before the Poop Patrol began work, residents made over 14,000 complaints about feces in the streets.{{cite web | last=Chasmar | first=Jessica | title=San Francisco launching ‘Poop Patrol’ to clean up city sidewalks: Report | website=The Washington Times | date=2018-08-14 | url=https://www.washingtontimes.com/news/2018/aug/14/san-francisco-launching-poop-patrol-clean-city-sid/ | access-date=2025-03-06}} By 2021, San Francisco saw a decrease in reports of feces on streets compared to previous years, partly due to the Poop Patrol's efforts and the reopening of indoor restrooms after the COVID pandemic restrictions were lifted.{{cite web | last=Ting | first=Eric | title=Don't look now but SF’s poop problem seems to be getting better | website=SFGATE | date=2021-07-14 | url=https://www.sfgate.com/bay-area-politics/article/San-Francisco-poop-problem-stats-streets-feces-new-16311073.php | access-date=2025-03-06}}

As of 2020, Breed lives in San Francisco's Lower Haight neighborhood.{{Cite web |date=2023-06-12 |title=Vandals Spray-Paint Mayor Breed's Home with Graffiti Over Banko Brown Killing |url=https://sfstandard.com/2023/06/12/san-francisco-mayor-home-spraypainted-over-banko-brown-killing/ |access-date=2024-06-21 |website=The San Francisco Standard |language=en}}{{Cite web |last=Boone |first=Alastair |date=2020-05-01 |title=Protestors hold die-in at SF Mayor London Breed's house |url=https://thestreetspirit.org/2020/05/01/protestors-hold-die-in-at-sf-mayor-london-breeds-house/ |access-date=2024-06-21 |website=Street Spirit |language=en-US}} Before becoming Mayor, her apartment was rent-controlled.{{Cite web |title=Living in rent-controlled home, she's next S.F. mayor - City |url=https://digitaledition.chicagotribune.com/tribune/article_popover.aspx?guid=bd76268c-26dd-402f-b9b5-9608dbd9e11a |access-date=2024-06-21 |website=digitaledition.chicagotribune.com}}

In February 2020, Breed made the Nob Hill Gazette's ranking of "A-List Eligibles," listing single celebrities who are notable in San Francisco.{{Cite web |last=Sweeney |first=Katie |date=2020-02-01 |title=A-List Eligibles |url=https://www.nobhillgazette.com/people/a-list-eligibles/article_29a1e921-c775-536a-bba2-539f2dbeb05c.html |access-date=2024-06-24 |website=nobhillgazette.com |language=en}} The Gazette described Breed as "quite possibly the City’s hardest-working bachelorette," with Breed naming Brad Pitt and Denzel Washington as her celebrity crushes.

• List of mayors of the 50 largest cities in the United States

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