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6 Westacott Hayes

39876/APP/2026/271FullRefused

Refused on 27 March 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

Erection of a part two storey part single storey rear extension.

Received
2 February 2026
Ward
CHARVILLE 2022
  1. Received2 Feb
  2. Validated2 Feb
  3. Consult.3 Mar
  4. Target30 Mar
  5. Decided27 Mar

Decided in 53 days (council typically 56)

About this application

This is a full planning application for a single storey rear extension at 6 WESTACOTT HAYES. Hillingdon has handled 4,983 applications of this type. This one was decided in 53 days, 3 days quicker than Hillingdon's typical decision time. The site is in 1 listed building nearby. There has been 1 other application at this address. In the past year there have been 128 applications across CHARVILLE 2022. We hold 1,066 applications in total for the UB4 postcode area.

87% of full applications at London Borough of Hillingdon 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. By virtue of the cumulative scale and bulk and the first floor flat roofed design, the proposed rear extension would result in a dominant, incongruous and visually obtrusive form of development which would cause significant harm to the character, appearance and visual amenities of the pair of semi-detached dwellings and the surrounding area, contrary to Policy BE1 of the Hillingdon Local Plan: Part One- Strategic Policies (2012), Policies DMHB 11 and DMHB 12 of the Hillingdon Local Plan: Part Two- Development Management Policies (2020), Policies D1, D3 and D4 of the London Plan and the National Planning Policy Framework (2024).

From the council's decision notice.

Application details

Postcode
UB4 8AQ
Application type
Full
Scale / size
Small

Planning application dates

Date validated
2 February 2026
Neighbour consultation start
10 February 2026
Last date for comments
3 March 2026
Target decision date
30 March 2026

Applicant and agent

Agent address
Mr Mansoor Amiri 892 London Road Thornton Heath London CR7 7PB

Planning decision

Statutory period
56 days

Additional information

Documents
9

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Article 4 direction: Residential extensions
  • Flood zone 1: Low probability (rivers and sea)

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (22)

flood storage areas, conservation 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: Hillingdon

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

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