69 Chiltern Street Westminster W1U 6NL
Erection of a mansard roof extension and extension of existing rear closet wing at second and third floors; excavation/lowering of the existing basement level and rear courtyard to basement level and installation of glass roof at the ground floor; 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
- 21/08542/FULL
- Local authority
- Westminster
- Postcode
- W1U 6NL
- Ward
- MHC_02
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 18 Jan 2022
- Validated
- 18 Jan 2022
- Comments close
- 17 Mar 2022
- Target decision
- 15 Mar 2022
- Decided
- 24 Mar 2022
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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