54 Rosemary Avenue London Borough of Barnet N3 2QN
Proposed single-storey rear extension with a proposed depth of 5 metres, eaves height of 3 metres and maximum height of 4 metres.
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Progress
Application details
- Reference
- 21/5566/PNH
- Local authority
- Barnet
- Postcode
- N3 2QN
- Ward
- FC
- Application type
- Prior Approval
- Property type
- House
Key dates
- Submitted
- 20 Oct 2021
- Validated
- 20 Oct 2021
- Target decision
- 1 Dec 2021
- Decided
- 26 Nov 2021
Estimated project value
£63k–£105k
Based on the 26.0m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, single-storey extension £1,800-£3,000/m².
Floor area gained: 26m²
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.
- 22 ROSEMARY AVENUE, LONDON, N3 2QNSemi-detached · £865,00011 months ago17 Sept 2025
- 24 ROSEMARY AVENUE, LONDON, N3 2QNTerraced · £685,00017 months ago28 Mar 2025
- 48 ROSEMARY AVENUE, LONDON, N3 2QNTerraced · £765,0002 years ago7 Feb 2024
- 24 ROSEMARY AVENUE, LONDON, N3 2QNTerraced · Not a standard market sale · £580,0002 years ago30 Jan 2024
- 56 ROSEMARY AVENUE, LONDON, N3 2QNTerraced · £765,0003 years ago22 Feb 2023
- GROUND FLOOR FLAT, 10 ROSEMARY AVENUE, LONDON, N3 2QNFlat or maisonette · Leasehold · £575,0003 years ago16 Dec 2022
- 58 ROSEMARY AVENUE, LONDON, N3 2QNTerraced · £790,0004 years ago30 Jun 2022
- 52 ROSEMARY AVENUE, LONDON, N3 2QNTerraced · £767,5005 years ago19 Aug 2021
Homes here go for about £765,000 — the median of the last 7 market sales in N3 2QN, £575,000 to £865,000.
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
- 54 Rosemary Avenue London Borough of Barnet N3 2QNPermittedNext door
- 58 Rosemary Avenue London Borough of Barnet N3 2QNPermittedNext door
- 48 Rosemary Avenue London Borough of Barnet N3 2QNPermittedAdjoining
- 46 Rosemary Avenue Barnet N3 2QNPermittedAdjoining
- 66 Rosemary Avenue London Borough of Barnet N3 2QNRefused44 yd
- 66 Rosemary Avenue London Borough of Barnet N3 2QNPermitted44 yd