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Northwood

50988/APP/2026/1443Householder planning permissionRefused
Householder

Refused on 11 August 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 single storey rear extension, erecting from existing extension.

Received
10 June 2026
Ward
NORTHWOOD HILLS 2022
  1. Received10 Jun
  2. Validated16 Jun
  3. Consult.
  4. Target11 Aug
  5. Decided11 Aug

Decided in 56 days (council typically 56)

About this application

This is a planning application for a single storey rear extension at Northwood. Hillingdon has handled 1,272 applications of this type. This one was decided in 56 days. There have been 189 other applications at this address. In the past year there have been 116 applications across NORTHWOOD HILLS 2022.

89% of householder planning permission 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. The proposed first-floor rear extension, by reason of its excessive depth (when combined with the existing return), scale and bulk, together with its incongruous flat roof design and awkward relationship with the existing pitched roof, would result in a discordant and unsympathetic addition which fails to harmonise with the architectural composition of the existing property and would be detrimental to its character and appearance and the visual amenities of the surrounding area contrary to Policy BE1 of the Hillingdon Local Plan: Part One - Strategic Policies (November 2012) and Policies DMHB 11, DMHB 12 and DMHD 1 of the Hillingdon Local Plan: Part Two - Development Management Policies (January 2020).

From the council's decision notice.

Application details

Application type
Householder planning permission

Planning application dates

Date validated
16 June 2026
Target decision date
11 August 2026

Planning decision

Case officer
Katherine Mills

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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