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85 Preston Hill, Harrow, HA3 9SQ

26/1489HouseholderRefused

Refused on 6 August 2026

Council decision: Permission RefusedDelegated (officer decision)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

Proposed single-storey rear extension to dwellinghouse

Received
11 June 2026
Decision level
Delegated (officer decision)
Ward
Kenton
Agent
Paradigm Architects
  1. Received11 Jun
  2. Validated11 Jun
  3. Consult.9 Jul
  4. Target
  5. Decided6 Aug

Decided in 56 days (council typically 56)

About this application

This is a full planning application for a single storey rear extension at 85 Preston Hill, Harrow, HA3 9SQ. Brent has handled 4,396 applications of this type. This one was decided in 56 days. The site is in a conservation area. There are no previous applications recorded at this address. In the past year there have been 163 applications across Kenton. We hold 5,586 applications in total for the HA3 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.Planning something similar? See what gets approved on your street

Why it was refused

  1. The Local Planning Authority is unable to make an accurate and full assessment on the application having regard to the inaccurate drawings provided. This is contrary to policy DMP1 of the Brent Local Plan 2019-2041 and the guidance in Brent's Residential Extensions and Alterations SPD 2025.
  2. The proposed extension by virtue of its excessive eaves height facing No.83 Preston Hill is considered to be out of scale with the main dwelling and the character of the area. This is contrary to policy DMP1 of the Brent Local Plan 2019-2041 and the guidance in Brent's Residential Extensions and Alterations SPD 2025.
  3. The proposed extension by virtue of its siting, excessive depth and eaves height would have an unduly detrimental impact on the outlook, light and result in an increased sense of enclosure to the habitable room windows and the rear patio enjoyed by the neighbouring occupier(s) at No.83 Preston Hill. This is contrary to policy DMP1 of the Brent Local Plan 2019-2041 and the guidance in Brent's Residential Extensions and Alterations SPD 2025.

From the council's decision notice.

Application details

Postcode
HA3 9SQ
Application type
Householder
Scale / size
Small

Planning application dates

Date validated
11 June 2026
Consultation expiry
9 July 2026
Neighbour consultation end
9 July 2026
Last date for comments
6 August 2026

Applicant and agent

Agent
Paradigm Architects
Architect profile
PARADIGM STUDIO LIMITED
Agent address
Integer House, Bucknall Lane, Bre Innovation Campus, Hertfordshire, WD25 9XX

Additional information

Planning Portal ID
PP-14942089
Comments
0
Documents
7

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.

Source: Brent

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

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