12 Collison Avenue London Borough of Barnet EN5 3DD
Alteration and extension to existing roof to include rear dormer window
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Progress
Application details
- Reference
- 21/5123/HSE
- Local authority
- Barnet
- Postcode
- EN5 3DD
- Ward
- HB
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 23 Sept 2021
- Validated
- 23 Sept 2021
- Target decision
- 18 Nov 2021
- Decided
- 18 Nov 2021
Estimated project value
£35k–£94k
Typical UK cost for this job type, at outer 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. 3 recent sales are listed below.
- 30 COLLISON AVENUE, BARNET, EN5 3DDTerraced · £845,00011 months ago9 Oct 2025
- 10 COLLISON AVENUE, BARNET, EN5 3DDSemi-detached · £1,085,00020 months ago12 Dec 2024
- 28 COLLISON AVENUE, BARNET, EN5 3DDTerraced · £800,00022 months ago8 Nov 2024
- 12 COLLISON AVENUE, BARNET, EN5 3DDSemi-detached · £1,100,0004 years ago15 Jul 2022
- 14 COLLISON AVENUE, BARNET, EN5 3DDTerraced · £750,0004 years ago12 Jul 2022
- 16 COLLISON AVENUE, BARNET, EN5 3DDTerraced · £780,0004 years ago20 May 2022
- 12 COLLISON AVENUE, BARNET, EN5 3DDSemi-detached · New build · £926,0006 years ago20 Dec 2019
- 8 COLLISON AVENUE, BARNET, EN5 3DDSemi-detached · New build · £985,0006 years ago20 Dec 2019
Homes here go for about £885,500 — the median of the last 8 market sales in EN5 3DD, £750,000 to £1,100,000.
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
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- London Borough of BarnetPermittedAdjoining
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