Architects in NW10
Willesden, Harlesden, Kensal Green, Neasden, Stonebridge and Park Royal. Victorian and Edwardian terraces dominate the south of the district, with interwar houses further north; rear extensions, lofts and flat conversions are typical.
RIBA Chartered Practice · ARB-registered architects · Extensions, lofts and planning drawings
Planning authority
Which council decides in NW10?
NW10 is split between 3 councils, so the council that decides your application depends on your street. 1,847 postcodes, 1.6 miles from our studio.
| Council | Share of NW10 postcodes |
|---|---|
| Brent | 86% (1,588) |
| Ealing | 10% (181) |
| Hammersmith and Fulham | 4% (77) |
By postcode sector
| Sector | Postcodes | Council |
|---|---|---|
| NW10 0 | 206 | Brent |
| NW10 1 | 171 | Brent |
| NW10 2 | 172 | Brent |
| NW10 3 | 177 | Brent |
| NW10 4 | 154 | Brent |
| NW10 5 | 227 | Brent (mostly; some streets in another council) |
| NW10 6 | 147 | Ealing (mostly; some streets in another council) |
| NW10 7 | 205 | Brent (mostly; some streets in another council) |
| NW10 8 | 237 | Brent |
| NW10 9 | 151 | Brent |
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 Brent
Single-storey rear extensions are normally limited to 3m deep on terraced and semi-detached houses and 4m on detached houses, with more depth possible if set in from the boundary (Residential Extensions and Alterations SPD 2, 2018).
SourceRear dormers outside conservation areas can be the full width of the original roof but must sit at least 0.3m below the ridge and 0.5m above the eaves.
SourceBasements should be no wider than the original house, extend no more than 3m beyond the rear and be one storey deep (Basement SPD, 2017).
Source
Local planning points
If your home is in Ealing
Ealing's residential extensions guidance (SPD 4) uses a general limit of 3m deep and 3m high for single-storey rear extensions, with more possible on detached houses or where neighbours are well separated. The guidance is old, so how much weight it now carries should be checked case by case.
SourceConverting a house to a small HMO needs planning permission across the borough. An Article 4 direction has applied in Perivale since 30 October 2024 and in the rest of the borough since 14 November 2025.
SourceA new Ealing Local Plan is at examination; the inspectors issued their main-modifications letter in June 2026.
Source
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