25 Cumberland Street Westminster SW1V 4LS
Excavation of existing vault to front to increase head height, replacement of existing metal staircase to basement lightwell, relocation of front entrance door, construction of new infill extension at rear basement and ground floor level, new first floor extension with associated roof terrace to second floor, demolition and reconstruction of existing roof with 3 rooflights, construction of new dormer to provide access to new rear roof terrace, external refurbishment to include replacement windows, repointing to rear brickwork and redecoration of front elevation.
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Progress
Application details
- Reference
- 25/01501/FULL
- Local authority
- Westminster
- Postcode
- SW1V 4LS
- Ward
- PSW_22
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 25 Apr 2025
- Validated
- 25 Apr 2025
- Comments close
- 10 Jun 2025
- Target decision
- 20 Jun 2025
- Decided
- 10 Oct 2025
Estimated project value
£38k–£78k
Based on the 23.0m² of floor area stated in the application, at inner London rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².
Floor area gained: 23m²
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 3 recent sales are listed below.
- 19 CUMBERLAND STREET, LONDON, SW1V 4LSOther · Not a standard market sale · £2,365,00011 months ago7 Oct 2025
- FLAT 1, 5 CUMBERLAND STREET, LONDON, SW1V 4LSFlat or maisonette · Leasehold · £522,50019 months ago14 Feb 2025
- FLAT 3, 21 CUMBERLAND STREET, LONDON, SW1V 4LSFlat or maisonette · Leasehold · £465,00021 months ago16 Dec 2024
- 25 CUMBERLAND STREET, LONDON, SW1V 4LSTerraced · £1,950,0002 years ago16 Jul 2024
- BASEMENT FLAT, 9 CUMBERLAND STREET, LONDON, SW1V 4LSFlat or maisonette · Leasehold · £660,0003 years ago23 Jun 2023
- FLAT 2, 7 CUMBERLAND STREET, LONDON, SW1V 4LSFlat or maisonette · Leasehold · £560,0003 years ago6 Apr 2023
- 13 CUMBERLAND STREET, LONDON, SW1V 4LSTerraced · £1,655,0004 years ago22 Jun 2022
- 7A CUMBERLAND STREET, LONDON, SW1V 4LSFlat or maisonette · Leasehold · £585,0004 years ago16 May 2022
Homes here go for about £585,000 — the median of the last 7 market sales in SW1V 4LS, £465,000 to £1,950,000.
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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