17 Hertford Street Westminster W1J 7RS
Replacement of non-original casement windows at Level 03 with timber sash windows; new structure for mansard extension, infill of existing lightwell and repositioning of skylight above stairwell. [Linked to 26/02818/LBC]
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Progress
Application details
- Reference
- 26/02817/FULL
- Local authority
- Westminster
- Postcode
- W1J 7RS
- Ward
- WEW_22
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 28 Apr 2026
- Validated
- 28 Apr 2026
- Comments close
- 8 Jun 2026
- Target decision
- 23 Jun 2026
- Decided
- 23 Jul 2026
Estimated project value
£53k–£110k
Based on the 32.8m² 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: 32.8m²
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.
- 17 HERTFORD STREET, LONDON, W1J 7RSOther · Not a standard market sale · £14,500,00017 months ago13 May 2025
Contains HM Land Registry data © Crown copyright and database right 2025. 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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