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Permitted23/1148/HSESubmitted 3 years agoRear extension

13 Rowsley Avenue London Borough of Barnet NW4 1AP

Single storey front extension including conversion of the existing garage into habitable room, insertion of windows and door to replace the garage door. Single storey rear infill extension

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Progress

Submitted
20 Mar 2023
— completed
Validated
20 Mar 2023
— completed
Consultation
— completed
Target date
15 May 2023
— completed
Decided
15 May 2023
— completed

Application details

Reference
23/1148/HSE
Local authority
Barnet
Postcode
NW4 1AP
Ward
HD22
Application type
Householder
Property type
House

Key dates

Submitted
20 Mar 2023
Validated
20 Mar 2023
Target decision
15 May 2023
Decided
15 May 2023

Estimated project value

£25k–£41k

Based on the 10.0m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, single-storey extension £1,800-£3,000/m².

Floor area gained: 10

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.

Homes here go for about £969,000 — the median of the last 7 market sales in NW4 1AP, £860,000 to £1,180,000.

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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