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Permitted26/2575/HSESubmitted 3 months agoLoft conversion

59 Lyonsdown Avenue London Borough of Barnet EN5 1DX

Single storey side extension to provide bike store. Addition of a canopy above side door. New timber gates to side. Roof extension involving 1no. new dormer window to rear elevation. Insertion of 2no. circular windows to rear elevation. Alterations to front garden including changes to existing driveway and widening of vehicular access, and new steps. New raised patio to rear with associated steps to garden. New brick garden wall to rear. Replacement of existing windows with double glazed timber windows to side and rear.

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Map of the site

Progress

Submitted
13 Jul 2026
— completed
Validated
13 Jul 2026
— completed
Consultation
3 Aug 2026
— completed
Target date
7 Sept 2026
— completed
Decided
12 Oct 2026
— completed

Application details

Reference
26/2575/HSE
Local authority
Barnet
Postcode
EN5 1DX
Ward
BV22
Application type
Householder
Property type
House

Key dates

Submitted
13 Jul 2026
Validated
13 Jul 2026
Comments close
3 Aug 2026
Target decision
7 Sept 2026
Decided
12 Oct 2026

Estimated project value

£23k–£47k

Based on the 15.0m² of floor area stated in the application, at outer London rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².

Floor area gained: 15m²

Recently sold nearby

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

Homes here go for about £1,237,500 — the median of the last 7 market sales in EN5 1DX, £950,000 to £1,750,000.

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.

Recorded changes

  • 22 Oct 2026: Approved
  • 22 Oct 2026: The proposal was amended

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