57 Harley Street Westminster W1G 8QS
Infill of existing rear lightwell at basement and first floor, infill of rear ground floor pathway/lightwell and erection of rear first floor extension (including raising of party wall with no.55 Harley Street) all to be used as Medical Use (Class E(e)) in association with the existing Medical Use. Installation of green roofs and rooflights on proposed extension roofs.
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Progress
Application details
- Reference
- 22/08133/FULL
- Local authority
- Westminster
- Postcode
- W1G 8QS
- Ward
- MBW_22
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 7 Mar 2023
- Validated
- 7 Mar 2023
- Comments close
- 10 Apr 2023
- Target decision
- 2 May 2023
- Decided
- 17 May 2023
Estimated project value
£720k–£1080k
Based on the 134m² of floor area stated in the application, at inner London rates (2026). Source: trade estimate, basement £4,000-£6,000/m².
Floor area gained: 133.5m²
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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