4 Cavendish Avenue London Borough of Barnet N3 3QN
Roof extension including rear dormer window with juliette balcony and insertion of 1no. rooflight to front roofslope. Alterations to existing ground floor rear extension including changes to doors and windows and insertion of 2no. new rooflights to the flat roof
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Progress
Application details
- Reference
- 21/5991/192
- Local authority
- Barnet
- Postcode
- N3 3QN
- Ward
- FC
- Application type
- All Other
- Property type
- Flat
Key dates
- Submitted
- 12 Nov 2021
- Validated
- 12 Nov 2021
- Target decision
- 7 Jan 2022
- Decided
- 10 Dec 2021
Estimated project value
£23k–£48k
Based on the 14.0m² 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: 14.01m² · 3 additional bedrooms
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 4 recent sales are listed below.
- 2 CAVENDISH AVENUE, LONDON, N3 3QNSemi-detached · Not a standard market sale · £900,0007 months ago9 Feb 2026
- 18 CAVENDISH AVENUE, LONDON, N3 3QNOther · Not a standard market sale · £85,00010 months ago10 Nov 2025
- GROUND FLOOR MAISONETTE, 18 CAVENDISH AVENUE, LONDON, N3 3QNFlat or maisonette · Leasehold · Not a standard market sale · £290,00014 months ago27 Jun 2025
- 34 CAVENDISH AVENUE, LONDON, N3 3QNTerraced · £1,191,70015 months ago11 Jun 2025
- 4 CAVENDISH AVENUE, LONDON, N3 3QNSemi-detached · £1,040,0004 years ago4 Nov 2021
- 10 CAVENDISH AVENUE, LONDON, N3 3QNSemi-detached · £960,0005 years ago25 Jun 2021
- 34 CAVENDISH AVENUE, LONDON, N3 3QNTerraced · £780,0005 years ago21 Sept 2020
- 46 CAVENDISH AVENUE, LONDON, N3 3QNSemi-detached · £1,147,5006 years ago29 Nov 2019
Homes here go for about £1,040,000 — the median of the last 5 market sales in N3 3QN, £780,000 to £1,191,700.
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
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