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PermittedP/0273/23Submitted 3 years agoRear extension

21 Walton Road Harrow HA1 4UX

CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Single storey rear extension; outbuilding at rear (demolition of rear extension)

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Map of the site

Progress

Submitted
1 Feb 2023
— completed
Validated
1 Feb 2023
— completed
Consultation
1 Feb 2023
— completed
Target date
29 Mar 2023
— completed
Decided
21 Mar 2023
— completed

Application details

Reference
P/0273/23
Local authority
Harrow
Postcode
HA1 4UX
Ward
Marlborough
Application type
All Other
Property type
House

Key dates

Submitted
1 Feb 2023
Validated
1 Feb 2023
Comments close
1 Feb 2023
Target decision
29 Mar 2023
Decided
21 Mar 2023

Estimated project value

£84k–£140k

Based on the 37.3m² of floor area stated in the application, at outer London rates (2026). Source: FMB / Checkatrade 2026, single-storey extension £1,800-£3,000/m².

Floor area gained: 37.3m²

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.

Homes here go for about £283,000 — the median of the last 7 market sales in HA1 4UX, £230,000 to £585,000.

Contains HM Land Registry data © Crown copyright and database right 2025. 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.

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