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6 Cool Oak Lane London NW9 7BJ

26/1467/HSERefused

Refused on 16 June 2026

1 reason 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

Single storey side infill extension and single storey rear extension following demolition of existing outbuilding and greenhouse. Single storey front extension

Submitted
21 April 2026
  1. Received21 Apr
  2. Validated
  3. Consult.
  4. Target
  5. Decided16 Jun

Decided in 56 days

About this application

This is a planning application for demolition at 6 Cool Oak Lane London NW9 7BJ. Barnet has handled 16,931 applications of this type. This one was decided in 56 days. There has been 1 other application at this address. We hold 1,900 applications in total for the NW9 postcode area.

Why it was refused

  1. The proposed rear extension by reason of its siting, scale, height and excessive rearward projection would constitute an overbearing form of development, appearing as visually obtrusive and resulting in an undue loss of outlook, increased sense of enclosure, loss of natural light and overshadowing to the detriment of the residential amenities of neighbouring occupiers at No.4 Cool Oak Lane, contrary to Policy D3 of the London Plan (2021), Policies CDH01 and CDH05 of the Barnet Local Plan 2025, and the Residential Design Guidance SPD (2016).

From the council's decision notice.

Application details

Postcode
NW9 7BJ

Appeal history

6011424
Dismissed
Type: Householder (HAS)Procedure: Written RepresentationsDecision: 4 September 2026Dev Type: Householder developmentsReason: refused

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1
  • Brownfield land register: Upper Welsh Harp, 117-125 West Hendon Broadway, London, NW9 7BPRegister site at or near this address
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

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 and heritage coasts.

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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