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Permitted35250/APP/2015/2531Change of use

Union House, 23 Clayton Road Hillingdon UB3 1AN

Extensions to fourth and fifth floors to create 3 x 1-bed and 1 x 2-bed flats including change of use from office (Use Class B1) to residential (Use Class C3) with associated car and bicycle parking, refuse store and replacement of external windows/doors and installation of weatherboarding to all elevations

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Map of the site

Progress

Submitted
—
— completed
Validated
—
— completed
Consultation
—
— completed
Target date
—
— completed
Decided
28 Aug 2015
— completed

Application details

Reference
35250/APP/2015/2531
Local authority
Hillingdon
Postcode
UB3 1AN
Ward
BOTWELL
Application type
All Other
Property type
Flat

Key dates

Decided
28 Aug 2015

Estimated project value

£19k–£125k

Typical UK cost for this job type, at outer London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: trade estimate.

Recently sold nearby

New owners, recently moved in. First work on a house usually follows within months of completing. 8 recent sales are listed below.

Homes here go for about £540,000 — the median of the last 5 market sales in UB3 (the wider postcode district), £295,000 to £615,000.

Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.

Planning constraints

No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.

Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.

Nearby applications