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122 Palermo Road, London, NW10 5YN

26/0971Prior Approval - Large householderRefused
Householder

Refused on 27 May 2026

Council decision: Prior approval is required and refusedDelegated (officer decision)

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

Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 4.5m Maximum height - 3.4m Eaves height - 2.72m

Received
20 April 2026
Decision level
Delegated (officer decision)
Ward
Harlesden & Kensal Green
Agent
Mosaic Building Design
  1. Received20 Apr
  2. Validated20 Apr
  3. Consult.13 May
  4. Target1 Jun
  5. Decided27 May

Decided in 37 days (council typically 56)

About this application

This is an outline application for a single storey rear extension at 122 Palermo Road, London, NW10 5YN. Brent has handled 1,485 applications of this type. This one was decided in 37 days, 3 weeks quicker than Brent's typical decision time. The site is in a conservation area. There have been 4 other applications at this address. In the past year there have been 148 applications across Harlesden & Kensal Green. We hold 4,516 applications in total for the NW10 postcode area.

75% of outline 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

Application details

Postcode
NW10 5YN
Application type
Prior Approval - Large householder
Scale / size
Small

Planning application dates

Date validated
20 April 2026
Consultation expiry
13 May 2026
Consultation end
13 May 2026
Neighbour consultation end
13 May 2026
Last date for comments
1 June 2026
Target decision date
1 June 2026

Applicant and agent

Agent
Mosaic Building Design
Architect profile
MOSAIC BUILDING DESIGN LTD
Agent address
86-90 Paul Street, London, EC2A 4NE

Additional information

Planning Portal ID
PP-14868922
Comments
0
Documents
4
Constraints
3

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.

Associated applications

  1. 2026
    20 Apr

    Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall…

    This applicationRefusedOutline26/0971
  2. 2026
    20 Apr

    Certificate of lawfulness for proposed rear dormer window with 3x front rooflights to the dwellinghouse.

    ApprovedCertificate of Lawfulness - ProposedFiled alongside26/1041

Source: Brent

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

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