1-3 Grosvenor Square Westminster W1K 4BN
Demolition behind the retained Grosvenor Square and Grosvenor Street facades and redevelopment to provide basement, lower ground, ground and first to seventh floor levels to provide 41 residential units. Associated ancillary leisure facilities, car parking, cycle parking, mechanical plant and associated works at lower basement level. Creation of a green roof at roof level, courtyard gardens at ground floor level, terraces at second, sixth and seventh floor levels, and photovoltaics at roof level.
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Progress
Application details
- Reference
- 14/05137/FULL
- Local authority
- Westminster
- Postcode
- W1K 4BN
- Ward
- WEST END
- Application type
- All Other
Key dates
- Decided
- 3 Dec 2015
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
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.
- THE MAYFAIR RESIDENCE, 1 GROSVENOR SQUARE, LONDON, W1K 4BNOther · Leasehold · Not a standard market sale · £19,125,0007 months ago9 Feb 2026
- THE MAYFAIR RESIDENCE, 1 GROSVENOR SQUARE, LONDON, W1K 4BNFlat or maisonette · Leasehold · Not a standard market sale · £19,125,00023 months ago9 Oct 2024
- APARTMENT 4.5, 1 GROSVENOR SQUARE, LONDON, W1K 4BNFlat or maisonette · Leasehold · £11,263,3602 years ago6 Dec 2023
- APARTMENT 3.8, 1 GROSVENOR SQUARE, LONDON, W1K 4BNFlat or maisonette · Leasehold · £5,000,0002 years ago6 Dec 2023
- APARTMENT 1.7, 1 GROSVENOR SQUARE, LONDON, W1K 4BNFlat or maisonette · Leasehold · £8,000,0002 years ago12 Oct 2023
- APARTMENT 2.5, 1 GROSVENOR SQUARE, LONDON, W1K 4BNFlat or maisonette · Leasehold · £9,255,0002 years ago2 Oct 2023
- APARTMENT 1.5, 1 GROSVENOR SQUARE, LONDON, W1K 4BNFlat or maisonette · Leasehold · £24,500,0003 years ago30 Jun 2023
- APARTMENT 3.5, 1 GROSVENOR SQUARE, LONDON, W1K 4BNFlat or maisonette · Leasehold · £9,250,0003 years ago6 Jun 2023
Homes here go for about £9,252,500 — the median of the last 6 market sales in W1K 4BN, £5,000,000 to £24,500,000.
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
- 1 Grosvenor Square Westminster W1K 4BNPermittedNext door
- Grosvenor Square Westminster W1K 4BNPermittedNext door
- 1, 3 Grosvenor Square Westminster W1K 4BNPermittedNext door
- Macdonald House, 1-3 Grosvenor Square Westminster W1K 4BNPermittedNext door
- 1 Grosvenor Square Westminster W1K 4BNPermittedNext door
- WestminsterPermittedNext door