1 Tretawn Park London Borough of Barnet NW7 4PS
Two storey front extension and part single, part two storey side and rear extension with first floor balconies to front and rear elevations, following demolition of existing garage and conservatory. Associated alterations to roof including increase in ridge height
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Progress
Application details
- Reference
- 25/3952/HSE
- Local authority
- Barnet
- Postcode
- NW7 4PS
- Ward
- MH22
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 3 Oct 2025
- Validated
- 3 Oct 2025
- Target decision
- 28 Nov 2025
- Decided
- 17 Nov 2025
Estimated project value
£370k–£515k
Based on the 136m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, two-storey extension £2,000-£2,800/m².
Floor area gained: 136.28m²
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.
- 9 TRETAWN PARK, LONDON, NW7 4PSDetached · £2,750,0009 months ago15 Jan 2026
- 1 TRETAWN PARK, LONDON, NW7 4PSDetached · £1,275,00014 months ago31 Jul 2025
- 15 TRETAWN PARK, LONDON, NW7 4PSDetached · £2,150,0002 years ago23 Jan 2024
- 7 TRETAWN PARK, LONDON, NW7 4PSDetached · £2,925,0003 years ago23 Mar 2023
- 11 TRETAWN PARK, LONDON, NW7 4PSDetached · £1,225,0004 years ago5 Aug 2022
- 17 TRETAWN PARK, LONDON, NW7 4PSDetached · Not a standard market sale · £1,190,0007 years ago31 Oct 2018
- 19 TRETAWN PARK, LONDON, NW7 4PSDetached · £1,200,00010 years ago26 Jul 2016
- 9 TRETAWN PARK, LONDON, NW7 4PSDetached · £1,675,00012 years ago20 Jun 2014
Homes here go for about £1,675,000 — the median of the last 7 market sales in NW7 4PS, £1,200,000 to £2,925,000.
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.
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