Architects in UB2

South Southall and Norwood Green. Interwar terraces and semis, commonly extended at the rear.

RIBA Chartered Practice · ARB-registered architects · Extensions, lofts and planning drawings

Planning authority

Which council decides in UB2?

UB2 is split between 2 councils, so the council that decides your application depends on your street. 532 postcodes, 7.8 miles from our studio.

Council	Share of UB2 postcodes
Ealing	81% (431)
Hounslow	18% (97)

Sector	Postcodes	Council
UB2 4	265	Ealing
UB2 5	267	Ealing (mostly; some streets in another council)

Postcode checker

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

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.
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Converting 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.
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A new Ealing Local Plan is at examination; the inspectors issued their main-modifications letter in June 2026.
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Local planning points

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).
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Full-width box dormers are normally refused; dormers must be set in from the ridge, eaves and sides, by at least 1m on larger houses.
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A borough-wide Article 4 direction has required planning permission for small HMOs since 4 September 2023.
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Local work