14 Derwent Avenue London Borough of Barnet NW7 3DZ
Roof extension including rear dormer window with juliette balcony and 4no. rooflights to front roofslope
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Progress
Application details
- Reference
- 21/0493/192
- Local authority
- Barnet
- Postcode
- NW7 3DZ
- Ward
- HA
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 1 Feb 2021
- Validated
- 1 Feb 2021
- Target decision
- 29 Mar 2021
- Decided
- 29 Mar 2021
Estimated project value
£535k–£1115k
Based on the 330m² 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: 330m² · 1 additional bedrooms
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.
- 2 DERWENT AVENUE, LONDON, NW7 3DZSemi-detached · £980,0008 months ago19 Dec 2025
- 30 DERWENT AVENUE, LONDON, NW7 3DZSemi-detached · £938,8502 years ago3 Nov 2023
- 2 DERWENT AVENUE, LONDON, NW7 3DZSemi-detached · £800,0009 years ago2 May 2017
- 14 DERWENT AVENUE, LONDON, NW7 3DZSemi-detached · £670,00010 years ago15 Jul 2016
- 20 DERWENT AVENUE, LONDON, NW7 3DZDetached · £455,00015 years ago2 Sept 2011
- 32 DERWENT AVENUE, LONDON, NW7 3DZSemi-detached · £470,00017 years ago20 Aug 2009
- 20 DERWENT AVENUE, LONDON, NW7 3DZDetached · £382,00017 years ago9 Jun 2009
- 12 DERWENT AVENUE, LONDON, NW7 3DZTerraced · £342,00017 years ago13 Mar 2009
Homes here go for about £570,000 — the median of the last 8 market sales in NW7 3DZ, £342,000 to £980,000.
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.
Nearby applications
- 14 Derwent Avenue London Borough of Barnet NW7 3DZPermittedNext door
- 12 Derwent Avenue London Borough of Barnet NW7 3DZPermittedNext door
- 15 Derwent Avenue London Borough of Barnet NW7 3DYPermitted48 yd
- 11 Derwent Avenue London Borough of Barnet NW7 3DYPermitted49 yd
- 19 Derwent Avenue London Borough of Barnet NW7 3DYPermitted57 yd
- 2 Derwent Avenue London Borough of Barnet NW7 3DZRefused59 yd