11a, Belgrave Square SW1 is a Grade II listed building in the Westminster local planning authority area, England. First listed on 1 May 1986. Mansion. 7 related planning applications.
11a, Belgrave Square SW1
- WRENN ID
- slow-threshold-amber
- Grade
- II
- Local Planning Authority
- Westminster
- Constituency
- Cities of London and Westminster MP: Rachel Blake (Lab)
- Country
- England
- Date first listed
- 1 May 1986
- Type
- Mansion
- Address
- 11a, Belgrave Square SW1, City of Westminster, SW1X 8PH
- OS grid reference
- TQ 281 794
- Coordinates
- 51.49976, -0.1555
- Source
- Historic England listing
Description
This is a mansion, built around 1900, although it may incorporate an earlier structure. It is constructed of stucco with a green slate roof. The architectural style is classical, incorporating elements of the French Rococo. The facade features channelled quoins. The building is two storeys high, with an attic and basement, and is five windows wide. A central porch is supported by Doric columns. The windows are segment-headed casement windows with architraves, and feature Rococo cartouches to the keystones. A balustraded parapet tops the building, and there is a Mansard roof with dormers. Wrought iron window guards and area railings are present. The interior has not been inspected. The building is listed primarily for its group value alongside properties in Wilton Place, Wilton Crescent, and Belgrave Square.
Local climate
11a, Belgrave Square SW1 sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 93% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 94% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, more than 51% of listed buildings. Of these, 15 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 2003
- Related listed building consents — 7 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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