69 Chiltern Street Westminster W1U 6NL
Erection of a mansard roof extension and extension of existing rear closet wing at second floor. Excavation/lowering of the existing basement level and rear courtyard to basement level and installation of glass roof at the ground floor level. Installation of new windows to front, rear and side elevations and a flush walk-on roof light over one of the existing front lightwells, and associated works, all in association with the continued use of the property as a single-family dwelling (Class C3).
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Progress
Application details
- Reference
- 21/06895/FULL
- Local authority
- Westminster
- Postcode
- W1U 6NL
- Ward
- MHC_02
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 13 Oct 2021
- Validated
- 13 Oct 2021
- Target decision
- 8 Dec 2021
Estimated project value
£105k–£225k
Based on the 66.0m² of floor area stated in the application, at inner London rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².
Floor area gained: 66m² · 2 additional bedrooms
Recently sold nearby
New owners, recently moved in. First work on a house usually follows within months of completing.
- 69 CHILTERN STREET, LONDON, W1U 6NLTerraced · Not a standard market sale · £5,000,0005 months ago27 Mar 2026
- 69 CHILTERN STREET, LONDON, W1U 6NLTerraced · £2,500,0007 years ago10 Oct 2018
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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