Summerhouse to Centre of South Side of Square Garden is a Grade II listed building in the Westminster local planning authority area, England. First listed on 5 February 1970. Summerhouse. 24 related planning applications.

Summerhouse to Centre of South Side of Square Garden

WRENN ID
hidden-stronghold-rye
Grade
II
Local Planning Authority
Westminster
Constituency
Cities of London and Westminster MP: Rachel Blake (Lab)
Country
England
Date first listed
5 February 1970
Type
Summerhouse
Address
Summerhouse to Centre of South Side of Square Garden, St James's Square Sw1, City of Westminster, SW1Y 4LB
OS grid reference
TQ 295 803
Coordinates
51.50681, -0.1349
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The summerhouse located at the center of the south side of St. James's Square garden was built in 1822, with its construction supervised by John Nash, who likely designed it as well. The structure is made of painted timber. The north front features coupled columns, although the Ionic capitals have been removed, and it is topped with a dentil pediment. The south elevation is similar but has a solid appearance with coupled pilaster treatment.

Local climate

Summerhouse to Centre of South Side of Square Garden sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 95% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 98% of listed buildings.

It experiences an average of 35 freeze-thaw cycles a year, more than 57% of listed buildings. Of these, 16 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 1 transaction since 2024
  • Related listed building consents — 24 applications
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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Nearby listed buildings

  1. Statue of William III (In Centre of Square) Grade I 52 m
  2. 31a, St James's Square SW1 Grade II 69 m
  3. 100 Pall Mall Grade II 76 m
  4. London House Grade II* 77 m
  5. The Royal Automobile Club Grade II* 77 m
  6. 20 and 21, St James's Square SW1 Grade I 83 m
  7. 33, ST JAMES'S SQUARE SW1 (See details for further address information) Grade II* 89 m
  8. 18, St James's Square SW1 Grade II 100 m
  9. The Reform Club Grade I 102 m
  10. Crusader House Grade II 104 m