← Back to search

Permitted26/03409/FULLSubmitted 4 months agoLoft conversion

17 Hertford Street Westminster W1J 7RS

Replacement of the mansard infill extension to the south east of the property by extending the existing bay upwards by a single storey (3-storeys total) and associated roof works. (Linked with 26/03410/LBC)

Find on council portal

Tracking, tags and letters are part of the paid plan. See what it costs. Searching and reading any record stays free.

Map of the site

Progress

Submitted
11 Jun 2026
— completed
Validated
11 Jun 2026
— completed
Consultation
10 Jul 2026
— completed
Target date
6 Aug 2026
— completed
Decided
27 Aug 2026
— completed

Application details

Reference
26/03409/FULL
Local authority
Westminster
Postcode
W1J 7RS
Ward
WEW_22
Application type
All Other
Property type
House

Key dates

Submitted
11 Jun 2026
Validated
11 Jun 2026
Comments close
10 Jul 2026
Target decision
6 Aug 2026
Decided
27 Aug 2026

Estimated project value

£7k–£15k

Based on the 4.5m² 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: 4.5m²

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.

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.

Recorded changes

  • 5 Sept 2026: Approved

Nearby applications