Architects in TW3
Hounslow town centre and the surrounding streets. Interwar terraces and semis, extended at the rear and in the loft.
RIBA Chartered Practice · ARB-registered architects · Extensions, lofts and planning drawings
Planning authority
Which council decides in TW3?
TW3 is split between 2 councils, so the council that decides your application depends on your street. 786 postcodes, 8.6 miles from our studio.
| Council | Share of TW3 postcodes |
|---|---|
| Hounslow | 96% (758) |
| Richmond upon Thames | 4% (28) |
By postcode sector
| Sector | Postcodes | Council |
|---|---|---|
| TW3 1 | 213 | Hounslow |
| TW3 2 | 158 | Hounslow (mostly; some streets in another council) |
| TW3 3 | 196 | Hounslow (mostly; some streets in another council) |
| TW3 4 | 150 | Hounslow |
| TW3 9 | 69 | Hounslow |
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 Hounslow
Single-storey rear extensions are limited to 3.05m deep on terraced houses, 3.65m on semi-detached and 4.25m on detached houses (Residential Extension Guidelines, May 2024).
SourceFull-width box dormers are normally refused; dormers must be set in from the ridge, eaves and sides, by at least 1m on larger houses.
SourceA borough-wide Article 4 direction has required planning permission for small HMOs since 4 September 2023.
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