10, Portman Close W1 is a Grade I listed building in the Westminster local planning authority area, England. First listed on 1 December 1987. A C.1776 Mews building.
10, Portman Close W1
- WRENN ID
- gaunt-paling-cedar
- Grade
- I
- Local Planning Authority
- Westminster
- Constituency
- Cities of London and Westminster MP: Rachel Blake (Lab)
- Country
- England
- Date first listed
- 1 December 1987
- Type
- Mews building
- Address
- 10, Portman Close W1, City of Westminster
- OS grid reference
- TQ 279 813
- Coordinates
- 51.51659, -0.15681
- Source
- Historic England listing
Description
No. 10 Portman Close is a Grade I listed mews building dating from around 1776. It was originally built as a coach house for Robert Adam's Home House, which is now the Courtauld Institute at No. 20 Portman Square. The building is constructed of stock brick and features a slate roof. The street front was rebuilt in the early 20th century, while the garden front, which faces the rear of Home House, retains a more polite appearance.
The building is two storeys high and three bays wide, with the central bay slightly advanced. It has a central doorway and recessed sash windows that are set under flat gauged arches, all contained within a triple blind arcade composition. The arches rise from linked stone imposts, and the structure is topped with a stone coped parapet that is capped by decorative vases.
Local climate
10, Portman Close W1 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
Sign in or create a free account to unlock:
- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- No sale records on file
- No related consent applications matched
- 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.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings