54 Wimpole Street Westminster W1G 8YH
Use of the basement from residential (Class C3) to medical use (Class D1). Partial demolition of existing basement extension and erection of a new single storey rear basement extension to provide additional medical accommodation (Class D1). Removal of rear ground floor structure and erection of a single storey rear ground floor extension. Relocation of rooflight over rear basement accommodation. Installation of three air conditioning units within an enclosure in the courtyard area at rear basement level. Use of the mews building for residential purposes (Class C3) including a new second floor roof extension. External alterations to the mews building including a new pavement light on Browning Mews. Associated internal alterations to 54 Wimpole Street. [Site includes 8 Browning Mews]. [Part of a land use swap with 7 Dunstable Mews].
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Progress
Application details
- Reference
- 08/11082/FULL
- Local authority
- Westminster
- Postcode
- W1G 8YH
- Ward
- MARYLEBONE HIGH STREET
- Application type
- All Other
- Property type
- House
Key dates
- Decided
- 28 Apr 2009
Estimated project value
£37k–£100k
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: Checkatrade 2026 loft conversion cost guide.
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.
- FLAT 3, 5 MARYLEBONE STREET, LONDON, W1G 8JDFlat or maisonette · Leasehold · £400,0002 months ago3 Sept 2026
- FLAT 12, 29 WIMPOLE STREET, LONDON, W1G 8GPFlat or maisonette · Leasehold · £1,240,0003 months ago24 Jul 2026
- FLAT 1, 29 WIMPOLE STREET, LONDON, W1G 8GPFlat or maisonette · Leasehold · £1,800,0003 months ago10 Jul 2026
- FLAT 19, BASILDON COURT, 28 DEVONSHIRE STREET, LONDON, W1G 6PPFlat or maisonette · Leasehold · Not a standard market sale · £355,0003 months ago7 Jul 2026
- APARTMENT 8, 103 - 105 HARLEY STREET, LONDON, W1G 6AJFlat or maisonette · Leasehold · £685,5004 months ago25 Jun 2026
- 10 DEVONSHIRE MEWS WEST, LONDON, W1G 6QETerraced · £5,250,0004 months ago19 Jun 2026
- 4 DEVONSHIRE CLOSE, LONDON, W1G 7BAOther · Not a standard market sale · £7,8135 months ago27 May 2026
- FLAT 2, ST DAVID'S HOUSE, 16 NEW CAVENDISH STREET, LONDON, W1G 8UPFlat or maisonette · Leasehold · £2,250,0005 months ago8 May 2026
Homes here go for about £1,520,000 — the median of the last 6 market sales in W1G (the wider postcode district), £400,000 to £5,250,000.
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
- 54 Wimpole Street Westminster W1G 8YJPermittedNext door
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