1 Mayfield Avenue London Borough of Barnet N12 9JG
Single storey rear extension, roof extension involving hip to gable, 2no side gable window, rear dormer window and 3no front facing rooflight. New rear outbuilding
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Progress
Application details
- Reference
- 20/5649/192
- Local authority
- Barnet
- Postcode
- N12 9JG
- Ward
- WO
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 30 Nov 2020
- Validated
- 30 Nov 2020
- Target decision
- 25 Jan 2021
- Decided
- 5 Feb 2021
Estimated project value
£295k–£610k
Based on the 181m² 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: 181m² · 1 additional bedrooms
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.
- 43 MAYFIELD AVENUE, LONDON, N12 9JGTerraced · £780,00020 months ago8 Jan 2025
- 27 MAYFIELD AVENUE, LONDON, N12 9JGTerraced · £850,0004 years ago9 Feb 2022
- 21 MAYFIELD AVENUE, LONDON, N12 9JGTerraced · £695,0005 years ago16 Jun 2021
- 9 MAYFIELD AVENUE, LONDON, N12 9JGTerraced · £720,0005 years ago18 Feb 2021
- 33 MAYFIELD AVENUE, LONDON, N12 9JGTerraced · £727,5007 years ago24 May 2019
- 1 MAYFIELD AVENUE, LONDON, N12 9JGDetached · £885,0007 years ago18 Apr 2019
- 17 MAYFIELD AVENUE, LONDON, N12 9JGTerraced · £650,0007 years ago18 Feb 2019
- 37 MAYFIELD AVENUE, LONDON, N12 9JGTerraced · £640,0009 years ago24 Mar 2017
Homes here go for about £723,750 — the median of the last 8 market sales in N12 9JG, £640,000 to £885,000.
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
- 1 Mayfield Avenue London Borough of Barnet N12 9JGRefusedNext door
- 1 Mayfield Avenue London Borough of Barnet N12 9JGPermittedNext door
- 1 Mayfield Avenue London Borough of Barnet N12 9JGPermittedNext door
- 1 Mayfield Avenue London Borough of Barnet N12 9JGPermittedNext door
- 1 Mayfield Avenue London Borough of Barnet N12 9JGRefusedNext door
- 1 Mayfield Avenue London Borough of Barnet N12 9JGRefusedNext door