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Permitted14/09881/FULLBasement

14 Wilton Crescent Westminster SW1X 8RN

Excavation to create a basement extension with swimming pool under rear of property, erection of rear ground floor extension, construction of a new closet wing extension to contain a passenger lift and rebuilding of the rear bay elevation, installation of retractable glazed roof over courtyard, conversion of front vaults, and installation of mechanical plant within enclosures at rear lower ground and third floor levels; all in connection with the use of the building as a single family dwelling.

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Map of the site

Progress

Submitted
—
— completed
Validated
—
— completed
Consultation
—
— completed
Target date
—
— completed
Decided
5 Feb 2015
— completed

Application details

Reference
14/09881/FULL
Local authority
Westminster
Postcode
SW1X 8RN
Ward
KNIGHTSBRIDGE AND BELGRAVIA
Application type
All Other
Property type
House

Key dates

Decided
5 Feb 2015

Estimated project value

£135k–£340k

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

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 £6,295,000 — the median of the last 4 market sales in SW1X 8RN, £1,247,000 to £34,000,000.

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.

Nearby applications