London Borough of Barnet
Three storey rear extension. Roof extension including 6no. rear dormer windows and 6no. conservation type rooflights on flat roof. Creation of atrium at the front at basement level. New shop front. Change of use of first and second floors at Nos.397-399 from vacant offices (Class E) into 14-bed, 14-person HMO (sui generis). Conversion of first and second floors at No.401 from a two-bedroom dwelling (Class C3) to a 7-bed, 7-person HMO (sui generis) with associated cycle and bin storage
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Progress
Application details
- Reference
- 26/2896/FUL
- Local authority
- Barnet
- Ward
- WH22
- Application type
- All Other
- Property type
- Flat
Key dates
- Submitted
- 5 Aug 2026
- Validated
- 5 Aug 2026
- Comments close
- 28 Aug 2026
- Target decision
- 30 Sept 2026
Estimated project value
£625k–£1300k
Based on the 520m² of floor area stated in the application, at UK average rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².
Floor area gained: 519.5m²
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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