18 Tretawn Gardens London Borough of Barnet NW7 4NR
Single storey front/side extension. Part single, part two storey rear extension. Excavation and creation of lower ground floor level to provide habitable space following removal of existing shed. Insertion of window to side elevation. Associated alterations to fenestration and installation of new rear terrace and access steps.
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Progress
Application details
- Reference
- 21/2664/HSE
- Local authority
- Barnet
- Postcode
- NW7 4NR
- Ward
- MH
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 12 May 2021
- Validated
- 12 May 2021
- Target decision
- 7 Jul 2021
- Decided
- 7 Jul 2021
Estimated project value
£240k–£335k
Based on the 89.0m² 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: 89m²
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.
- 44 TRETAWN GARDENS, LONDON, NW7 4NRDetached · £1,300,00010 months ago17 Oct 2025
- 40 TRETAWN GARDENS, LONDON, NW7 4NRDetached · £1,200,00012 months ago29 Aug 2025
- 46 TRETAWN GARDENS, LONDON, NW7 4NRDetached · £1,300,0004 years ago28 Jan 2022
- 26 TRETAWN GARDENS, LONDON, NW7 4NRDetached · £1,800,0005 years ago30 Jul 2021
- 8 TRETAWN GARDENS, LONDON, NW7 4NRSemi-detached · £1,675,0005 years ago27 Jan 2021
- 24 TRETAWN GARDENS, LONDON, NW7 4NRSemi-detached · £892,5005 years ago15 Dec 2020
- 50 TRETAWN GARDENS, LONDON, NW7 4NRDetached · £1,590,0009 years ago24 Feb 2017
- 6 TRETAWN GARDENS, LONDON, NW7 4NRDetached · £1,075,0009 years ago31 Oct 2016
Homes here go for about £1,300,000 — the median of the last 8 market sales in NW7 4NR, £892,500 to £1,800,000.
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
- 18 Tretawn Gardens London Borough of Barnet NW7 4NRPermittedNext door
- 16 Tretawn Gardens London Borough of Barnet NW7 4NRRefusedNext door
- 16 Tretawn Gardens London Borough of Barnet NW7 4NRPermittedNext door
- 16 Tretawn Gardens London Borough of Barnet NW7 4NRPermittedNext door
- 16 Tretawn Gardens London Borough of Barnet NW7 4NRPermittedNext door
- 20 Tretawn Gardens London Borough of Barnet NW7 4NRPermittedNext door