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Permitted18/6266/HSESubmitted 7 years agoRear extension

44 Windermere Avenue London Borough of Barnet N3 3RA

Single storey rear extension. Conversion of existing garage into habitable room, insertion of window to replace garage door. Installation of front, side and rear rooflights and replacement of existing rooflight on main roof. Changes to fenestration. Installation of 4no solar panels at roof level. New front hardstanding to provide off-street parking

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Progress

Submitted
19 Oct 2018
— completed
Validated
19 Oct 2018
— completed
Consultation
— completed
Target date
14 Dec 2018
— completed
Decided
14 Dec 2018
— completed

Application details

Reference
18/6266/HSE
Local authority
Barnet
Postcode
N3 3RA
Ward
FC
Application type
Householder
Property type
House

Key dates

Submitted
19 Oct 2018
Validated
19 Oct 2018
Target decision
14 Dec 2018
Decided
14 Dec 2018

Estimated project value

£41k–£75k

Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: MyJobQuote / Checkatrade 2026, ~20m² at £1,800-£3,000/m².

Recently sold nearby

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

Homes here go for about £1,431,000 — the median of the last 7 market sales in N3 3RA, £1,125,000 to £1,680,000.

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.

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