18-20 Grosvenor Street 18-20 Brook's Mews Westminster W1K 4QH
Extension of time for the commencement of development granted planning permission on 26 January 2009 (extant permission: RN: 08/09076); namely, demolition of 19-20 Grosvenor Street and part of 18 Grosvenor Street and redevelopment of site to provide new building comprising Class A1 retail on part ground floor and lower ground floors and Class B1 offices on remainder of ground and lower ground floors and whole of five upper storeys. Installation of roof level and basement plant and creation of servicing area on lower ground with access from Brook's Mews [site includes Nos. 18-20 Brook's Mews].
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Progress
Application details
- Reference
- 10/05563/FULL
- Local authority
- Westminster
- Postcode
- W1K 4QH
- Ward
- WEST END
- Application type
- All Other
- Property type
- Commercial
Key dates
- Decided
- 24 Sept 2010
Estimated project value
£135k–£340k
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: trade estimate.
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
- 18 - 20 Grosvenor Street Westminster W1K 4QHPermittedNext door
- 20 Grosvenor Street Westminster W1K 4QWPermittedNext door
- 18 Grosvenor Street Westminster W1K 4QQPermittedNext door
- 17 Grosvenor Street Westminster W1K 4QHPermittedNext door
- 17 Grosvenor Street Westminster W1K 4QHPendingNext door
- 19 Brook's Mews Westminster W1K 4DXPermittedNext door