Areas / Westminster / W9
Architects in W9
Maida Vale, Maida Hill and part of Little Venice. Mansion blocks and stucco villas, much of it in conservation areas, so most work is internal or at the rear.
RIBA Chartered Practice · ARB-registered architects · Extensions, lofts and planning drawings
Planning authority
Which council decides in W9?
W9 is split between 3 councils, so the council that decides your application depends on your street. 579 postcodes, 2.5 miles from our studio.
| Council | Share of W9 postcodes |
|---|---|
| Westminster | 92% (535) |
| Kensington and Chelsea | 6% (37) |
| Camden | 1% (5) |
By postcode sector
| Sector | Postcodes | Council |
|---|---|---|
| W9 1 | 206 | Westminster (mostly; some streets in another council) |
| W9 2 | 157 | Westminster (mostly; some streets in another council) |
| W9 3 | 186 | Westminster |
| W9 4 | 30 | Kensington and Chelsea |
Postcode checker
Check your exact postcode
Type any postcode in the 33 London boroughs we cover. We'll tell you which council handles planning there and show you the local planning points.
Local planning points
If your home is in Westminster
There are 56 conservation areas in Westminster.
SourceThe City Plan 2019-2040 (2026) was adopted on 21 January 2026 after a partial review, replacing the 2021 version; work on a full new City Plan began in 2026.
SourceThe 2026 City Plan brings in a retrofit-first approach before demolition, and for the first time developments of fewer than 10 homes must contribute to affordable housing.
Source
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