10 Warwick Street Westminster W1B 5LZ
Refurbishment of the existing five story building, including a new lift and stair core, refurbished office space including a new mezzanine, Replacement of all existing windows and doors, including the glazed screen at ground floor level. At roof level, a new terrace will be formed with a new low level glazed access. Existing mansard will have two new dormers and installation of a new condensor units located on an existing plant gantry on the rear facade.
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Progress
Application details
- Reference
- 26/04660/FULL
- Local authority
- Westminster
- Postcode
- W1B 5LZ
- Ward
- WEW_22
- Application type
- All Other
- Property type
- Commercial
Key dates
- Submitted
- 27 Jul 2026
- Validated
- 27 Jul 2026
- Comments close
- 28 Aug 2026
- Target decision
- 21 Sept 2026
Estimated project value
£99k–£205k
Based on the 60.9m² 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: 60.85m²
Recently sold nearby
New owners, recently moved in. First work on a house usually follows within months of completing. 8 recent sales are listed below.
- FLAT 22, 22 PARK CRESCENT, LONDON, W1B 1PDFlat or maisonette · Leasehold · £757,5003 months ago18 May 2026
- 26 KINGLY STREET, LONDON, W1B 5QDOther · Leasehold · Not a standard market sale · £300,0004 months ago1 May 2026
- FLAT 7, 7 PORTLAND PLACE, LONDON, W1B 1PWOther · Leasehold · Not a standard market sale · £5,000,0009 months ago1 Dec 2025
- UNIT G15 KINGLY COURT, LONDON, W1B 5PWOther · Leasehold · Not a standard market sale · £104,50011 months ago30 Sept 2025
- FLAT 2, 88 PORTLAND PLACE, LONDON, W1B 1NXFlat or maisonette · Leasehold · £1,015,00013 months ago7 Aug 2025
- FLAT A, 82 PORTLAND PLACE, LONDON, W1B 1NSFlat or maisonette · Leasehold · Not a standard market sale · £4,600,00015 months ago6 Jun 2025
- FLAT 11, 22 PARK CRESCENT, LONDON, W1B 1PDFlat or maisonette · Leasehold · £1,000,00017 months ago24 Mar 2025
- FLAT 44, 88 PORTLAND PLACE, LONDON, W1B 1NXFlat or maisonette · Leasehold · £275,00017 months ago17 Mar 2025
Homes here go for about £878,750 — the median of the last 4 market sales in W1B (the wider postcode district), £275,000 to £1,015,000.
Contains HM Land Registry data © Crown copyright and database right 2026. 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
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