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Permitted26/0245/HSESubmitted 7 months agoRear extension

59 Oakleigh Avenue London Borough of Barnet N20 9JG

Single storey rear extension with two lantern rooflights, first floor side extension above the existing garage, and infill extension to the front between the garage and main dwelling at ground level. Extension to the existing second floor with associated roof alterations including 2no. side and 2no. front facing rooflights and new lantern rooflight. Re-location of existing windows and removal of chimney stack on side elevation

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Progress

Submitted
23 Jan 2026
— completed
Validated
23 Jan 2026
— completed
Consultation
— completed
Target date
20 Mar 2026
— completed
Decided
12 Mar 2026
— completed

Application details

Reference
26/0245/HSE
Local authority
Barnet
Postcode
N20 9JG
Ward
WS22
Application type
Householder
Property type
House

Key dates

Submitted
23 Jan 2026
Validated
23 Jan 2026
Target decision
20 Mar 2026
Decided
12 Mar 2026

Estimated project value

£120k–£205k

Based on the 50.0m² 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: 50 · 1 additional bedrooms

Recently sold nearby

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

Homes here go for about £1,785,000 — the median of the last 8 market sales in N20 9JG, £1,455,000 to £2,625,000.

Contains HM Land Registry data © Crown copyright and database right 2024. 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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