57 Harley Street Westminster W1G 8QS
Relocation of the residential (Class C3) space from the part ground and basement floors to part first and second and third floors along with the creation of five new residential flats (Class C3) at part first, and second, third and fourth floors; relocation of existing medical space (Class E(e)) from part first floor and second and third floors to rear ground floor and basement; installation of bicycle lift in front lightwell and associated alterations to the railings; centre lightwell infill with new passenger lift; replacement rear extension; basement extension; and acoustic screening for rooftop plant.
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Progress
Application details
- Reference
- 25/02646/FULL
- Local authority
- Westminster
- Postcode
- W1G 8QS
- Ward
- MBW_22
- Application type
- All Other
- Property type
- Flat
Key dates
- Submitted
- 23 Apr 2025
- Validated
- 23 Apr 2025
- Comments close
- 28 May 2025
- Target decision
- 18 Jun 2025
- Decided
- 23 Oct 2025
Estimated project value
£485k–£805k
Based on the 199m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, single-storey extension £1,800-£3,000/m².
Floor area gained: 199.3m²
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.
- 4 DEVONSHIRE CLOSE, LONDON, W1G 7BAOther · Not a standard market sale · £7,8133 months ago27 May 2026
- FLAT 13, 40 - 41 WIMPOLE STREET, LONDON, W1G 8ABFlat or maisonette · Leasehold · £1,000,0004 months ago30 Apr 2026
- FLAT 2, 36 DEVONSHIRE PLACE, LONDON, W1G 6JRFlat or maisonette · Leasehold · £1,450,0004 months ago23 Apr 2026
- FLAT 47, BASILDON COURT, 28 DEVONSHIRE STREET, LONDON, W1G 6PRFlat or maisonette · Leasehold · £700,0005 months ago19 Mar 2026
- FLAT 49, 2 MANSFIELD STREET, LONDON, W1G 9NFFlat or maisonette · Leasehold · £2,140,7507 months ago30 Jan 2026
- FLAT 47, MELCOMBE REGIS COURT, 59 WEYMOUTH STREET, LONDON, W1G 8NTFlat or maisonette · Leasehold · £775,0007 months ago21 Jan 2026
- 18 WHEATLEY STREET, LONDON, W1G 8PSOther · Leasehold · Not a standard market sale · £1,550,0007 months ago16 Jan 2026
- FLAT 33, MELCOMBE REGIS COURT, 59 WEYMOUTH STREET, LONDON, W1G 8NTFlat or maisonette · Leasehold · Not a standard market sale · £242,0007 months ago14 Jan 2026
Homes here go for about £1,000,000 — the median of the last 5 market sales in W1G (the wider postcode district), £700,000 to £2,140,750.
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.
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