12 Derwent Avenue London Borough of Barnet NW7 3DZ
Single storey side and rear extension. Associated alterations to roof
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Progress
Application details
- Reference
- 17/8063/HSE
- Local authority
- Barnet
- Postcode
- NW7 3DZ
- Ward
- HA
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 22 Dec 2017
- Validated
- 22 Dec 2017
- Target decision
- 16 Feb 2018
- Decided
- 8 Feb 2018
Estimated project value
£41k–£75k
Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: MyJobQuote / Checkatrade 2026, ~20m² at £1,800-£3,000/m².
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
- 14 Derwent Avenue London Borough of Barnet NW7 3DZPermittedNext door
- 11 Derwent Avenue London Borough of Barnet NW7 3DYPermittedAdjoining
- 15 Derwent Avenue London Borough of Barnet NW7 3DYPermitted45 yd
- 2 Derwent Avenue London Borough of Barnet NW7 3DZRefused50 yd
- 3 Derwent Avenue London Borough of Barnet NW7 3DYPermitted55 yd