89-92 Marylebone High Street Westminster W1U 4QW
Erection of a single storey mansard roof extension and reconfiguration of existing units to create two additional residential units (Class C3), creation of three new terraces, one at rear third floor level and two to the rear of the new fourth floor (Part of a land use package with 142-146 Harley Street and 32-34 Park Crescent Mews West).
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Progress
Application details
- Reference
- 17/09781/FULL
- Local authority
- Westminster
- Postcode
- W1U 4QW
- Ward
- MARYLEBONE HIGH STREET
- Application type
- All Other
- Property type
- House
Key dates
- Decided
- 17 Jul 2018
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.
- 159 MONTAGU MANSIONS, LONDON, W1U 6LQFlat or maisonette · Leasehold · £1,350,0002 months ago3 Jul 2026
- FLAT C, 34 GEORGE STREET, LONDON, W1U 7DPFlat or maisonette · Leasehold · £1,490,0003 months ago3 Jun 2026
- THIRD FLOOR FLAT 5, 36 NOTTINGHAM PLACE, LONDON, W1U 5NTFlat or maisonette · Leasehold · £827,5004 months ago29 May 2026
- FLAT 9, 30 BLANDFORD STREET, LONDON, W1U 4BYFlat or maisonette · Leasehold · £1,500,0004 months ago19 May 2026
- 61, LUXBOROUGH TOWER LUXBOROUGH STREET, LONDON, W1U 5BNFlat or maisonette · Leasehold · £685,0004 months ago18 May 2026
- 209, BICKENHALL MANSIONS BICKENHALL STREET, LONDON, W1U 6BWFlat or maisonette · Leasehold · £1,300,0004 months ago5 May 2026
- 23 YORK STREET, LONDON, W1U 6PFOther · Leasehold · Not a standard market sale · £2,700,0004 months ago30 Apr 2026
- FLAT 18, ST ANDREWS MANSIONS DORSET STREET, LONDON, W1U 4EQFlat or maisonette · Leasehold · Not a standard market sale · £1,750,0005 months ago8 Apr 2026
Homes here go for about £1,325,000 — the median of the last 6 market sales in W1U (the wider postcode district), £685,000 to £1,500,000.
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
- 90 Marylebone High Street Westminster W1U 4QZPermittedNext door
- 92 Marylebone High Street Westminster W1U 4RDPermittedNext door
- 2, 4 Moxon Street Westminster W1U 4EWPermittedNext door
- 1 Garbutt Place Westminster W1U 4DSPermittedNext door
- 87 Marylebone High Street Westminster W1U 4QUPermittedAdjoining
- Marylebone High Street WestminsterPermittedAdjoining