22 Cornwall Avenue London Borough of Barnet N3 1LG
Roof extension involving rear dormer window with juliette balcony and 3no front facing rooflights
Tracking, tags and letters are part of the paid plan. See what it costs. Searching and reading any record stays free.
Progress
Application details
- Reference
- 20/1749/192
- Local authority
- Barnet
- Postcode
- N3 1LG
- Ward
- WF
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 8 Apr 2020
- Validated
- 8 Apr 2020
- Target decision
- 3 Jun 2020
- Decided
- 4 May 2020
Estimated project value
£37k–£100k
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: Checkatrade 2026 loft conversion cost guide.
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.
- FLAT 2, 24 CORNWALL AVENUE, LONDON, N3 1LGFlat or maisonette · Leasehold · £499,9997 months ago30 Jan 2026
- 39 CORNWALL AVENUE, LONDON, N3 1LGTerraced · £985,0002 years ago25 Jun 2024
- FLAT 1, 24 CORNWALL AVENUE, LONDON, N3 1LGFlat or maisonette · Leasehold · £494,0004 years ago28 Feb 2022
- 28 CORNWALL AVENUE, LONDON, N3 1LGTerraced · £715,0009 years ago2 Feb 2017
- FLAT 2, 24 CORNWALL AVENUE, LONDON, N3 1LGFlat or maisonette · Leasehold · £525,0009 years ago16 Dec 2016
- FLAT 1, 24 CORNWALL AVENUE, LONDON, N3 1LGFlat or maisonette · Leasehold · £525,00010 years ago12 Aug 2016
- 24 CORNWALL AVENUE, LONDON, N3 1LGTerraced · Not a standard market sale · £525,00011 years ago12 Mar 2015
- LOWER MAISONETTE, 26 CORNWALL AVENUE, LONDON, N3 1LGFlat or maisonette · Leasehold · £290,00013 years ago14 Feb 2013
Homes here go for about £525,000 — the median of the last 7 market sales in N3 1LG, £290,000 to £985,000.
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.
Nearby applications
- 22 Cornwall Avenue London Borough of Barnet N3 1LGPermittedNext door
- 24 Cornwall Avenue Barnet N3 1LGPermittedNext door
- 26 Cornwall Avenue Barnet N3 1LGPermittedNext door
- 35 Grove Avenue London Borough of Barnet N3 1QSPermittedAdjoining
- 33 Grove Avenue London Borough of Barnet N3 1QSPermittedAdjoining
- 33 Grove Avenue London Borough of Barnet N3 1QSRefusedAdjoining