Sefton Avenue Barnet NW7 3QB
First floor side extension. Roof extension involving hip to gable, rear dormer and 3 no. front facing rooflights. Fenestration alterations.
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Progress
Application details
- Reference
- 25/3239/HSE
- Local authority
- Barnet
- Postcode
- NW7 3QB
- Ward
- EW22
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 4 Aug 2025
- Validated
- 4 Aug 2025
- Target decision
- 29 Sept 2025
- Decided
- 1 Oct 2025
Estimated project value
£77k–£160k
Based on the 47.2m² 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: 47.2m² · 1 additional bedrooms
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.
- 17 SEFTON AVENUE, LONDON, NW7 3QBSemi-detached · £850,00012 months ago21 Aug 2025
- 25 SEFTON AVENUE, LONDON, NW7 3QBSemi-detached · £1,025,00022 months ago6 Nov 2024
- 29 SEFTON AVENUE, LONDON, NW7 3QBSemi-detached · £881,5004 years ago25 Mar 2022
- 5 SEFTON AVENUE, LONDON, NW7 3QBSemi-detached · £560,0005 years ago25 Jun 2021
- 5 SEFTON AVENUE, LONDON, NW7 3QBSemi-detached · £500,0009 years ago27 Apr 2017
- 23 SEFTON AVENUE, LONDON, NW7 3QBSemi-detached · £650,00012 years ago15 Apr 2014
- 15 SEFTON AVENUE, LONDON, NW7 3QBSemi-detached · £507,50013 years ago8 Mar 2013
- 5A SEFTON AVENUE, LONDON, NW7 3QBSemi-detached · £330,00014 years ago25 May 2012
Homes here go for about £605,000 — the median of the last 8 market sales in NW7 3QB, £330,000 to £1,025,000.
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
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- 29 Sefton Avenue London Borough of Barnet NW7 3QBPermittedNext door
- 29 Sefton Avenue London Borough of Barnet NW7 3QBRefusedNext door
- 39 Sefton Avenue London Borough of Barnet NW7 3QERefused46 yd