54 Derwent Avenue London Borough of Barnet EN4 8LZ
Roof extension involving rear dormer window with juliette balcony
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Progress
Application details
- Reference
- 26/2191/192
- Local authority
- Barnet
- Postcode
- EN4 8LZ
- Ward
- BP22
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 12 Jun 2026
- Validated
- 12 Jun 2026
- Target decision
- 7 Aug 2026
- Decided
- 7 Aug 2026
Estimated project value
£30k–£63k
Based on the 20.0m² of floor area stated in the application, at outer London rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².
Floor area gained: 20m² · 1 additional bedrooms
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 4 recent sales are listed below.
- 110 DERWENT AVENUE, BARNET, EN4 8LZSemi-detached · £915,0006 months ago27 Feb 2026
- 94 DERWENT AVENUE, BARNET, EN4 8LZTerraced · £650,0009 months ago10 Nov 2025
- 96 DERWENT AVENUE, BARNET, EN4 8LZTerraced · £605,00018 months ago19 Feb 2025
- 104 DERWENT AVENUE, BARNET, EN4 8LZSemi-detached · £625,00021 months ago2 Dec 2024
- 96 DERWENT AVENUE, BARNET, EN4 8LZTerraced · £582,0002 years ago12 Jan 2024
- 54 DERWENT AVENUE, BARNET, EN4 8LZTerraced · Not a standard market sale · £590,0002 years ago20 Dec 2023
- 64 DERWENT AVENUE, BARNET, EN4 8LZTerraced · £490,0007 years ago9 Aug 2019
- 108 DERWENT AVENUE, BARNET, EN4 8LZSemi-detached · £525,0007 years ago2 Nov 2018
Homes here go for about £605,000 — the median of the last 7 market sales in EN4 8LZ, £490,000 to £915,000.
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.
Recorded changes
- 12 Aug 2026: Approved
Nearby applications
- 54 Derwent Avenue London Borough of Barnet EN4 8LZRefusedNext door
- 54 Derwent Avenue London Borough of Barnet EN4 8LZPermittedNext door
- 23 Chetwynd Avenue London Borough of Barnet EN4 8NGPermitted51 yd
- 43 Derwent Avenue London Borough of Barnet EN4 8LURefused57 yd
- 43 Derwent Avenue London Borough of Barnet EN4 8LUPermitted57 yd
- 17 Chetwynd Avenue London Borough of Barnet EN4 8NGPermitted65 yd