30 Rosemary Avenue London Borough of Barnet N3 2QN
Roof extension involving rear dormer window with Juliette balcony and 2no front facing rooflights
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Progress
Application details
- Reference
- 21/0136/192
- Local authority
- Barnet
- Postcode
- N3 2QN
- Ward
- FC
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 18 Feb 2021
- Validated
- 18 Feb 2021
- Target decision
- 15 Apr 2021
- Decided
- 3 Mar 2021
Estimated project value
£45k–£94k
Based on the 27.7m² 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: 27.71m² · 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.
- 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
- 30 Rosemary Avenue London Borough of Barnet N3 2QNRefusedNext door
- 1 Rosemary Avenue London Borough of Barnet N3 2QPRefused58 yd
- 1 Rosemary Avenue London Borough of Barnet N3 2QPPermitted58 yd
- 1 Rosemary Avenue London Borough of Barnet N3 2QPPermitted58 yd
- 46 Rosemary Avenue Barnet N3 2QNPermitted61 yd
- 14 Dudley Road London Borough of Barnet N3 2QRRefused63 yd