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102B Dartmouth Road, London, NW2 4HB

25/2625Full planning permissionRefused
Full

Refused on 10 December 2025

3 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

Lower ground floor extension incorporating associated roof terrace with privacy screening, ground floor extension with green roof, rear lightwell, single-storey outbuilding, alteration to fenestration and new timber decking in rear garden to flat

Submitted
3 October 2025
  1. Received3 Oct
  2. Validated
  3. Consult.
  4. Target
  5. Decided10 Dec

Decided in 68 days (council typically 56)

About this application

This is a planning application for an outbuilding at 102B Dartmouth Road, London, NW2 4HB. Brent has handled 580 applications of this type. This one was decided in 68 days, 12 days longer than Brent's typical decision time. The site is in a conservation area. There have been 2 other applications 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.

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. The proposed lower ground floor extension, ground floor rear extension, and roof terrace, by virtue of scale and design would materially harm the character of the house in terms of excessive scale, unsympathetic materiality and causing visual clutter contrary to Policy DMP1 and BHC1 of Brent’s Local Plan 2019-2041, Policy HC1 of London Plan (2021) and the provision of Mapesbury Conservation Area Design Guide (2018).
  2. The proposed rear garden works, by contrary of scale and design, would materially harm the character of the property and the conservation area, contrary to Policy DMP1, and BHC1 of Brent’s Local Plan, and Policy HC1 of London Plan (2021).
  3. The proposal would be detrimental to the existing trees within the site, which would also be detrimental to the character of the property and the conservation area, contrary to Policies DMP1, BGI2 of Brent’s Local Plan and the provisions of the Mapesbury Conservation Area Design Guide (2018).

From the council's decision notice.

Application details

Postcode
NW2 4HB
Application type
Full planning permission

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
  • Tree Preservation Order: Ref 25/00012Protected tree on or next to this site
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)

flood storage areas, listed buildings, 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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