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Permitted25/07887/LBCSubmitted 10 months agoRoof works

14 Cavendish Square Westminster W1G 9DB

Alterations including; demolition and alteration to roof structure including the installation of mechanical plant to roof valley above and the provision of a new terrace and associates railing and access arrangement (sliding roof light) to the rear of the main roof, removal of fixed rooflight over central stair; removal of stair from third floor terrace to plant zone at main roof level; installation of replacement roof lights at main roof level; refurbishment of main entrance door, installation of replacement security camera system, alteration to the ground and lower ground floor fenestration facing Deans Mews and facing internal lightwell, installation of replacement windows and doors at rear ground fand first floor level facing Deans Mews elevation and within the internal lightwell, removal of render to lightwell, installation of replacement cover and railings to first floor terrace, installation of onsite greening. Internal alteration and refurbishment throughout.

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Progress

Submitted
30 Oct 2025
— completed
Validated
30 Oct 2025
— completed
Consultation
8 Dec 2025
— completed
Target date
25 Dec 2025
— completed
Decided
11 Mar 2026
— completed

Application details

Reference
25/07887/LBC
Local authority
Westminster
Postcode
W1G 9DB
Ward
MBW_22
Application type
All Other
Property type
House

Key dates

Submitted
30 Oct 2025
Validated
30 Oct 2025
Comments close
8 Dec 2025
Target decision
25 Dec 2025
Decided
11 Mar 2026

Estimated project value

£9k–£25k

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 / BestBuilders 2026 roof replacement, 3-bed semi.

Floor area gained: 237

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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