11/11a-12/12a Old St Andrew's Mansions is a Grade II listed building in the Brent local planning authority area, England. First listed on 4 February 1999. Flats. 1 related planning application.
11/11a-12/12a Old St Andrew's Mansions
- WRENN ID
- half-wall-birch
- Grade
- II
- Local Planning Authority
- Brent
- Constituency
- Brent East MP: Dawn Butler (Lab)
- Country
- England
- Date first listed
- 4 February 1999
- Type
- Flats
- Address
- 11/11a-12/12a Old St Andrew's Mansions, Old Church Lane, NW9 8TB
- OS grid reference
- TQ 206 867
- Coordinates
- 51.56631, -0.26066
- Source
- Historic England listing
Description
Two pairs of flats, built in 1936 by Ernest George Trobridge. The buildings are constructed of brick with render and half-timbering to the upper storey and gable, and have tiled roofs. They are two storeys high, with a flat on each floor, and an external brick stair leads to the upper flats, set between a brick retaining wall which links the two otherwise independent units. The windows are timber casement windows with lattice panes, some of which are under projecting hoods. The original doors have been stripped and varnished. Interiors are believed to retain panelling to the living rooms, with picture rail, a deep frieze, and a ceiling cove above. Doors are lined in the same timber. Other rooms feature coved ceilings and the bedrooms have picture rail. The complex is significant as part of the best-surviving group of flats designed by Trobridge, a local architect. Trobridge developed a construction method using unseasoned timber and unskilled ex-servicemen to build cheap and charismatic homes. In the 1930s, he built flats of brick with idiosyncratic detailing, of which only numbers 1/1A to 12/12A Old St Andrew’s Mansions survive in listable condition. The detailing is inspired by Trobridge's Swedenborgian beliefs, which influenced the expression of chimneys, staircases, and external details, as well as the enrichment of the interiors with timber.
Local climate
11/11a-12/12a Old St Andrew's Mansions 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 97% 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 29 freeze-thaw cycles a year, fewer than 67% of listed buildings. Of these, 13 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 — 8 transactions since 1995
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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- Gatepiers Between Numbers 5/5a and 6/6a Old St Andrew's Mansions
- Tombstone to Henry Wetherilt in St Andrews Old Churchyard
- Tombstone to Timothy Wetherilt in St Andrews Old Churchyard
- Old Parish Church of St Andrew
- Chest Tomb to Joseph Finch in St Andrews Old Churchyard