Skip to content

46 Birchen Grove, London, NW9 8SA

25/2753Full planning permissionRefused
Full

Refused on 24 November 2025

5 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

Proposed single storey outbuilding in rear garden of the dwellinghouse.

Submitted
29 September 2025
  1. Received29 Sep
  2. Validated
  3. Consult.
  4. Target
  5. Decided24 Nov

Decided in 56 days (council typically 56)

About this application

This is a planning application for an outbuilding at 46 Birchen Grove, London, NW9 8SA. Brent has handled 580 applications of this type. This one was decided in 56 days. The site is in a conservation area, with 1 listed building nearby. There have been 4 other applications at this address. In the past year there have been 131 applications across Welsh Harp. We hold 1,900 applications in total for the NW9 postcode area.

70% of full planning permission applications at London Borough of Brent 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.See what's approved near your address

Why it was refused

  1. Having regard to the inaccurate and inconsistent plans submitted, the Local Planning Authority is unable to make a full assessment on this application. This is contrary to policy DMP1 of Brent's Local Plan (2019-2041).
  2. The proposed outbuilding by virtue of its excessive footprint would appear out of scale with the main dwelling and the prevailing pattern of development in the wider area. This is contrary to policy DMP1 of Brent's Local Plan (2019-2041) and the guidance set out in SPD -Residential Extensions and Alterations (2025).
  3. By virtue of its excessive size, the proposal has failed to demonstrate that the proposed outbuilding would be reasonably required for purposes incidental to the main dwelling house . This is contrary to policy DMP1 of Brent's Local Plan (2019-2041) and the guidance set out in SPD -Residential Extensions and Alterations (2025).
  4. In the absence of existing and proposed site plans demonstrating the relationship of the off-site trees along the River Brent to the application site, in addition to a tree survey, tree protection plan and foundation details, the submission has failed to demonstrate how the rooting system of these trees would be protected. This is contrary to policies DMP1 and BGI2 of Brent's Local Plan (2019-2041).
  5. The proposed development has failed to adequately demonstrate that it would be resistant and resilient to surface, fluvial and tidal flooding, contrary to policies DMP1 and BSUI3 of Brent's Local Plan (2019-2041).

From the council's decision notice.

Application details

Postcode
NW9 8SA
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 for HMOs
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: Brent

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

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near NW9

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

What's been approved on your street?

See what the council approved and refused near this address for the project you have in mind, and the rules that apply here.

Get The Signal Report