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Permitted15/07598/FULLLoft conversion

3 Cavendish Square Westminster W1G 9DB

Demolition of rear ground floor extension and mansard roof and erection of rear replacement rear ground floor extension and double pitched mansard roof. Use of building as a dwellinghouse (Class C3). Restoration and repair of front and rear facades.

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Progress

Submitted
—
— completed
Validated
—
— completed
Consultation
—
— completed
Target date
—
— completed
Decided
22 Oct 2015
— completed

Application details

Reference
15/07598/FULL
Local authority
Westminster
Postcode
W1G 9DB
Ward
WEST END
Application type
All Other
Property type
House

Key dates

Decided
22 Oct 2015

Estimated project value

£37k–£100k

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: Checkatrade 2026 loft conversion cost guide.

Recently sold nearby

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

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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