Architects in HA1
Harrow, Harrow on the Hill, Greenhill and West Harrow. Edwardian and interwar houses, with conservation areas on the Hill.
RIBA Chartered Practice · ARB-registered architects · Extensions, lofts and planning drawings
Planning authority
Which council decides in HA1?
HA1 is split between 2 councils, so the council that decides your application depends on your street. 963 postcodes, 5.3 miles from our studio.
By postcode sector
| Sector | Postcodes | Council |
|---|---|---|
| HA1 1 | 178 | Harrow |
| HA1 2 | 210 | Harrow |
| HA1 3 | 262 | Harrow (mostly; some streets in another council) |
| HA1 4 | 289 | Harrow |
| HA1 9 | 24 | Harrow |
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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 Harrow
The Residential Design Guide SPD (2010) sets no fixed depth for single-storey rear extensions that need permission. Extra depth is expected to be set in from the side boundary by twice that depth.
SourceTwo-storey rear extensions must meet the 45-degree code and are generally not possible on mid-terraced houses.
SourceThe Harrow Local Plan 2021–2041 was adopted on 24 March 2026, replacing the 2012 Core Strategy and 2013 development management policies.
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