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Permitted22/04886/FULLSubmitted 4 years agoRear extension

3 Blenheim Road Westminster NW8 0LU

Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations (Linked with 22/04887/LBC)

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Progress

Submitted
19 Jul 2022
— completed
Validated
19 Jul 2022
— completed
Consultation
13 Nov 2023
— completed
Target date
13 Sept 2022
— completed
Decided
18 Jan 2024
— completed

Application details

Reference
22/04886/FULL
Local authority
Westminster
Postcode
NW8 0LU
Ward
ARW_22
Application type
All Other
Property type
House

Key dates

Submitted
19 Jul 2022
Validated
19 Jul 2022
Comments close
13 Nov 2023
Target decision
13 Sept 2022
Decided
18 Jan 2024

Estimated project value

£335k–£560k

Based on the 138m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, single-storey extension £1,800-£3,000/m².

Floor area gained: 138.4 · 2 additional bedrooms

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.

Homes here go for about £3,925,000 — the median of the last 8 market sales in NW8 0LU, £3,100,000 to £5,700,000.

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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