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133B Dartmouth Road, London, NW2 4EN

25/2977Full Planning PermissionRefused
Full

Refused on 22 December 2025

Council decision: Permission RefusedDelegated (officer decision)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

Removal of 2x chimney stacks and installation of rear dormer window, installation of breather membrane with roof tile replacement, refreshing white paint on exiting windows and replacement of any time-worn gutters and rainwater pipes to the second floor flat.

Received
21 October 2025
Decision level
Delegated (officer decision)
Public comments
1
Ward
Cricklewood & Mapesbury
  1. Received21 Oct
  2. Validated28 Oct
  3. Consult.27 Nov
  4. Target
  5. Decided22 Dec

Decided in 55 days (council typically 56)

About this application

This is a full planning application for a dormer extension at 133B Dartmouth Road, London, NW2 4EN. Brent has handled 4,396 applications of this type. This one was decided in 62 days, 6 days longer than Brent's typical decision time. The site is in a conservation area. There are no previous applications recorded at this address. In the past year there have been 121 applications across Cricklewood & Mapesbury. We hold 2,752 applications in total for the NW2 postcode area.

77% of full 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. The proposed development, which includes the removal of the existing chimneys and installation of a dormer window, would, by virtue of its design and siting, result in the loss of a significant architectural feature that contributes to the character and appearance of the subject property and the Conservation Area. As a result, the proposal would have an unacceptably adverse impact on the character and appearance of the dwelling, locality and Conservation Area. The proposal is therefore considered contrary to Policies DMP1 and BHC1 of the Brent Local Plan(2019-2041).
  2. The current use of the dwelling does not correspond with any established planning records and appears to constitute an unlawful use. Both the submitted existing and proposed floor plans are inaccurate, and therefore the application cannot be fully considered in terms of the impact of the scheme on the host property and neighbouring properties. The application therefore fails to demonstrate that the proposals meet the Local Plan requirements of Policy DMP1 of Brent's Local Plan (2019-2041).

From the council's decision notice.

Application details

Postcode
NW2 4EN
Application type
Full Planning Permission
Scale / size
Small

Planning application dates

Date validated
28 October 2025
Consultation expiry
27 November 2025
Neighbour consultation end
27 November 2025
Last date for comments
23 December 2025

Applicant and agent

Agent
Neightstudio
Agent address
12 Melcombe Place, London, NW1 6JJ

Additional information

Planning Portal ID
PP-14425505
Documents
13
Constraints
2

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Mapesbury
  • Article 4 direction: Article 4 for HMOs+1 more
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

flood storage 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.

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