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18, Brook Avenue, HA8 9XF

26/0938/FULFull planning permissionRefused
Full

Refused on 7 May 2026

2 reasons for refusal

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Conversion of existing dwelling into 2no. self-contained flats. New side entrance door

Submitted
12 March 2026
  1. Received12 Mar
  2. Validated
  3. Consult.
  4. Target
  5. Decided7 May

Decided in 56 days (council typically 56)

About this application

This is a planning application at 18, Brook Avenue, HA8 9XF. Barnet has handled 768 applications of this type. This one was decided in 56 days. There are no previous applications recorded at this address. In the past year there have been 96 applications across EW22. We hold 1,453 applications in total for the HA8 postcode area.

62% of full planning permission applications at London Borough of Barnet were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Why it was refused

  1. The conversion of the single-family dwelling into self-contained flats would result in the loss of a single family unit which is of high priority in the Borough. The proposal would fail to re-provide a 3-bed family unit and fail to meet the criteria as set out for the sustainable redevelopment of larger homes, to the detriment of the strategic aim to prioritise delivery of family homes and mitigate the erosion of larger homes from within the existing housing stock in the Borough, contrary to Policies HOU02 and HOU03 of the LB Barnet Local Plan(2025) and the Residential Design Guidance SPD (2016)
  2. The proposed conversion of the single-family dwelling into self-contained flats in a street characterised by single family dwellings, including the additional activity, domestic paraphernalia and the formation of a second principal means of entry to the side, would constitute an incongruous and unsympathetic form of development, detrimental to the character of the host property, street scene and the surrounding area, contrary to Policy D3 of the London Plan (2021), Policies CDH01 and HOU03 of the LB Barnet Local Plan (2025) and the Residential Design Guidance SPD (2016)

From the council's decision notice.

Application details

Postcode
HA8 9XF
Application type
Full planning permission

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 3: High probability (rivers and sea)Part of the site
  • Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1
Also checked, none recorded (23)

flood storage areas, conservation areas, listed buildings, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Barnet

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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