8, Hallam Mews W1 is a Grade II listed building in the Westminster local planning authority area, England. First listed on 5 July 1973. Mews building. 1 related planning application.

8, Hallam Mews W1

WRENN ID
sunken-wattle-stoat
Grade
II
Local Planning Authority
Westminster
Constituency
Cities of London and Westminster MP: Rachel Blake (Lab)
Country
England
Date first listed
5 July 1973
Type
Mews building
Address
8, Hallam Mews W1, City of Westminster, W1W 7TD
OS grid reference
TQ 288 818
Coordinates
51.52056, -0.1442
Source
Historic England listing

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

Description

No. 8 Hallam Mews is a mews building dating from around 1776, designed by James Adam as a stable-coach house for No. 48 Portland Place. The building is faced with stucco and has a slate roof. The mews front has been altered, while the main front, facing the rear of the Portland Place house, features a grand design with a giant order. It is two storeys high and three windows wide. The ground floor has recessed sash windows in moulded architraves with projecting cornices on console brackets, while the first floor features recessed glazing bar sashes flanking a central blind window. The window bays are defined by full-height pilasters that support a cornice and parapet, with a string course at the first floor level.

Local climate

8, Hallam Mews W1 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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  • No EPC on record for this property
  • No sale records on file
  • Related listed building consents — 1 application
  • 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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