1 Gresham Avenue London Borough of Barnet N20 0XJ
Roof extension involving hip to gable, rear dormer window, 2no front facing rooflights and 2no side gable windows
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Progress
Application details
- Reference
- 21/4091/192
- Local authority
- Barnet
- Postcode
- N20 0XJ
- Ward
- CP
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 22 Jul 2021
- Validated
- 22 Jul 2021
- Target decision
- 16 Sept 2021
- Decided
- 19 Aug 2021
Estimated project value
£55k–£115k
Based on the 34.0m² 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: 34m² · 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.
- 25 GRESHAM AVENUE, LONDON, N20 0XJSemi-detached · £930,00012 months ago29 Aug 2025
- 11 GRESHAM AVENUE, LONDON, N20 0XJSemi-detached · Not a standard market sale · £850,00017 months ago20 Mar 2025
- 29 GRESHAM AVENUE, LONDON, N20 0XJSemi-detached · Not a standard market sale · £1,240,0004 years ago24 Nov 2021
- 19 GRESHAM AVENUE, LONDON, N20 0XJSemi-detached · £1,135,0008 years ago27 Mar 2018
- 5 GRESHAM AVENUE, LONDON, N20 0XJSemi-detached · £732,0008 years ago20 Oct 2017
- 25 GRESHAM AVENUE, LONDON, N20 0XJSemi-detached · £743,00010 years ago22 Sept 2015
- 7 GRESHAM AVENUE, LONDON, N20 0XJSemi-detached · £680,00011 years ago24 Oct 2014
- 23 GRESHAM AVENUE, LONDON, N20 0XJSemi-detached · £610,00012 years ago28 Mar 2014
Homes here go for about £737,500 — the median of the last 6 market sales in N20 0XJ, £610,000 to £1,135,000.
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
- 5 Gresham Avenue London Borough of Barnet N20 0XJPermittedAdjoining
- 5 Gresham Avenue London Borough of Barnet N20 0XJRefusedAdjoining
- 19 Park Way London Borough of Barnet N20 0XSPermittedAdjoining
- 19 Park Way London Borough of Barnet N20 0XSPermittedAdjoining
- 12 Gresham Avenue London Borough of Barnet N20 0XLPermitted45 yd
- 20 Gresham Avenue London Borough of Barnet N20 0XLPermitted57 yd