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6 Mallard Way, London, NW9 8JH

26/0917Refused

Refused on 25 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

Proposed front porch, single-storey front infill extension and first-floor side to rear extension...

Submitted
30 April 2026
  1. Received30 Apr
  2. Validated30 Apr
  3. Consult.
  4. Target
  5. Decided25 Jun

Decided in 56 days

About this application

This is a planning application for a rear extension at 6 Mallard Way, London, NW9 8JH. Brent has handled 17,100 applications of this type. This one was decided in 56 days. The site is in a conservation area. There have been 6 other applications at this address. We hold 1,900 applications in total for the NW9 postcode area.

Why it was refused

  1. The proposed front porch extension fails to comply with the guidance set out in the Residential Extensions and Alterations SPD. By reason of its excessive projection beyond the front bay window and its substantial width, the development would appear disproportionate and poorly related to the host dwelling. The proposal would fail to respect the established building line and would erode the architectural integrity and composition of the existing property. Furthermore, the extension would present as an overly prominent and incongruous addition within the streetscene, detracting from the character and appearance of the surrounding area. As such, the proposal is contrary to Policy DMP1 & BD1 of the Brent Local Plan (2019–2041) and the Residential Extensions and Alterations SPD (2025).

From the council's decision notice.

Application details

Postcode
NW9 8JH

Planning application dates

Date validated
30 April 2026

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Article 4 direction: Article 4 for HMOs
  • Flood zone 1: Low probability (rivers and sea)
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.

Planning history at this site

6 other applications at this property, newest first.

  1. 2025
    10 Dec

    Proposed first-floor side to rear extension to dwellinghouse

    ApprovedHouseholder25/3427
  2. 2025
    22 Sep

    Proposed two-storey side to rear extension and first-floor rear extension to dwellinghouse

    RefusedHouseholder25/2700
  3. 2024
    25 Oct

    Proposed two-storey side to rear extension to dwellinghouse

    ApprovedApplication24/3009
  4. 2024
    12 Jul

    Demolition of conservatory and outbuilding and erection of a single and two storey side extension with…

    RefusedHouseholder24/1946
  5. 2024
    29 Mar

    Certificate of lawfulness for proposed demolition of existing outbuildling, proposed erection of ...

    ApprovedApplication24/0850
  6. 2024
    29 Mar

    Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond t...

    ApprovedApplication24/0852

Source: Brent

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

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