24 - 25 Grosvenor Street Westminster W1K 4QN
Erection of a rear extension at second floor to enlarge existing office (Class B1) building, creation of a new terrace and green roof area at rear third floor level, use of rear ground and first floor levels fronting Brook's Mews as retail accommodation (Class A1) and associated external alterations to all elevations. Installation of plant with associated screening in the internal lightwell at basement level. (SITE INCLUDES 24 BROOKS MEWS)
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Progress
Application details
- Reference
- 17/01149/FULL
- Local authority
- Westminster
- Postcode
- W1K 4QN
- Ward
- WEST END
- Application type
- All Other
- Property type
- Commercial
Key dates
- Decided
- 24 May 2017
Estimated project value
£41k–£75k
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: MyJobQuote / Checkatrade 2026, ~20m² at £1,800-£3,000/m².
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.
- 70 PARK STREET, LONDON, W1K 2JTTerraced · £4,000,0002 months ago19 Jun 2026
- APARTMENT 6, 17 THREE KINGS YARD, LONDON, W1K 4JTFlat or maisonette · Leasehold · £3,950,0003 months ago8 Jun 2026
- 5A MOUNT STREET, LONDON, W1K 3NEFlat or maisonette · Leasehold · £6,400,0003 months ago5 Jun 2026
- 9 SOUTH STREET, LONDON, W1K 2XAOther · Leasehold · Not a standard market sale · £12,000,0003 months ago20 May 2026
- 7 AVERY ROW, LONDON, W1K 4ALFlat or maisonette · Leasehold · Not a standard market sale · £710,0004 months ago7 May 2026
- 25 NORTH ROW, LONDON, W1K 6DJOther · Leasehold · Not a standard market sale · £2,750,0004 months ago28 Apr 2026
- FLAT 2, 68 SOUTH AUDLEY STREET, LONDON, W1K 2QYFlat or maisonette · Leasehold · £5,375,0004 months ago13 Apr 2026
- FLAT 18, 51 SOUTH STREET, LONDON, W1K 2XLFlat or maisonette · Leasehold · £8,600,0005 months ago30 Mar 2026
Homes here go for about £5,375,000 — the median of the last 5 market sales in W1K (the wider postcode district), £3,950,000 to £8,600,000.
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
- WestminsterPermittedNext door
- WestminsterPermittedNext door
- 26 Grosvenor Street Westminster W1K 4QJPermittedNext door
- 26 Grosvenor Street Westminster W1K 4QJPermittedNext door
- 26 Grosvenor Street Westminster W1K 4QJRefusedNext door
- 26 Grosvenor Street Westminster W1K 4QJPermittedNext door