Grantham House

{{Short description|Town house in Grantham, Lincolnshire, England, built in 1380, owned by the National Trust}}

{{Use dmy dates|date=April 2022}}

{{Use British English|date=February 2023}}

{{Infobox building

| name = Grantham House

| image = Grantham House - geograph.org.uk - 333721.jpg

| image_size = 300

| image_alt =

| image_caption = Grantham House

| map_type = Lincolnshire

| map_alt =

| map_caption = Shown within Lincolnshire

| map_size =

| coordinates = {{coord|52.9149|-0.6400|display=inline}}

| map_dot_label = Grantham House

| relief =

| building_type =

| architectural_style =

| location =

| address =

| location_city = Grantham

| location_country = England

| altitude =

| current_tenants =

| completion_date = 1380

| client =

| owner = National Trust

| landlord =

| material =

| grounds_area =

| website = https://www.nationaltrust.org.uk/grantham-house

| footnotes = House open by appointment only (see Website for details)

| embedded =

{{Infobox designation list

| embed = yes

| designation1 = Grade I

| designation1_offname =

| designation1_type =

| designation1_criteria =

| designation1_date = 8 May 1950

| delisted1_date =

| designation1_partof =

| designation1_number = {{NHLE|num=1062508|short=yes}} - House
{{NHLE|num=1062508|short=yes}} - Stables

| designation2 = Grade II* Listed building

| designation2_offname =

| designation2_type =

| designation2_criteria =

| designation2_date = 20 April 1972

| delisted2_date =

| designation2_partof =

| designation2_number = {{NHLE|num=1062509|short=yes}} - Garden Wall

}}

}}

Grantham House is a town house, built in 1380, which is owned by the National Trust. It is in Grantham, Lincolnshire, England.{{cite PastScape|mnumber=325629|mname=Grantham House|accessdate=12 September 2013}}

The House is in Castlegate and its architectural features have been enhanced and remodelled several times over the centuries and include a 16th-century chimney stack, 17th century windows and an 18th-century staircase. The House and the Stables are both Grade I listed buildings and the Wall and Doorway for the riverside garden is Grade II* listed.{{NHLE|num=1062508|desc=Grantham House|grade=I|accessdate=12 September 2013}}{{NHLE|num=1360263|desc=Stables, Grantham House|grade=I|fewer-links=yes|accessdate=12 September 2013}}{{NHLE|num=1062509|desc=Garden wall,Grantham House|grade=II*|fewer-links=yes|accessdate=12 September 2013}} It was known as 'Hall House' in the 16th century after the Hall family who owned it and important guests during this period include Cardinal Wolsey and Margaret Tudor, Queen of Scots.{{cite book|last=Weir |date=2011 |first=Alison |title=Katherine Swynford: The Story of John of Gaunt and His Scandalous Duchess |url=https://books.google.com/books?id=5pl2dDVe__4C |publisher=Random House |pages=194–5 |isbn=9781446449073}}

The house is open daily as a community space (there is no entry charge). There is a café, second-hand book shop and extensive, peaceful gardens.