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Permitted25/5160/HSESubmitted 8 months agoTwo-storey extension

11 Rosslyn Avenue London Borough of Barnet EN4 8DH

Single storey front porch extension. Part single, part two storey rear extension and extension of existing patio area. Raising of the side garage roof. Changes to fenestration and creation of new openings (Amended Description)

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Progress

Submitted
23 Dec 2025
— completed
Validated
23 Dec 2025
— completed
Consultation
—
— completed
Target date
17 Feb 2026
— completed
Decided
27 Mar 2026
— completed

Application details

Reference
25/5160/HSE
Local authority
Barnet
Postcode
EN4 8DH
Ward
EB22
Application type
Householder
Property type
House

Key dates

Submitted
23 Dec 2025
Validated
23 Dec 2025
Target decision
17 Feb 2026
Decided
27 Mar 2026

Estimated project value

£93k–£130k

Based on the 37.0m² of floor area stated in the application, at outer London rates (2026). Source: FMB / Checkatrade 2026, two-storey extension £2,000-£2,800/m².

Floor area gained: 37m² · 1 additional bedrooms

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.

Homes here go for about £950,000 — the median of the last 7 market sales in EN4 8DH, £657,500 to £1,100,000.

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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