10, Duncan Grove, W3 7NN

254483FULFull planning permissionRefused

Full

Refused on 18 February 2026

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

Conversion of a single dwellinghouse into three self-contained dwellings; alteration of roof from hip to gable end; rear roof extension incorporating a Juliet balcony; installation of two rooflights to front roofslope; excavation of a basement with lightwells to front and side; rear sunken garden; single storey rear extension over basement extension with Juliet balcony (following demolition of existing rear extension); and associated internal and external alterations

Submitted: 27 November 2025
Council: London Borough of Ealing

ReceivedSubmitted27 Nov
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided18 Feb

Decided in 83 days (council typically 56)

About this application

This is a planning application for demolition at 10, Duncan Grove, W3 7NN. Ealing has handled 564 applications of this type. This one was decided in 83 days, 4 weeks longer than Ealing's typical decision time. There have been 3 other applications at this address. In the past year there have been 22 applications across EASACT. We hold 1,741 applications in total for the W3 postcode area.

77% of full planning permission applications at London Borough of Ealing 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

Why it was refused

The proposed development, by reason of an inadequate provision of outlook and ventilation for Bedrooms 1 and 3 within the proposed basement unit and by virtue of the insufficient provision of communal areas in all three proposed units, would constitute a substandard form of development, that would provide poor quality living conditions for future residents. The proposal would therefore fail to comply with Policies D3 and D6 of the London Plan (2021), Policy 7B of the Ealing Development Management DPD (2013) and the and the Housing Design Standards LPG (2023).
Due to the 1.8m high privacy screen, siting of the host dwelling to the south and direct overlooking from Flat 1, the proposed sunken garden would receive a low level of natural light, would constitute a substandard form of development, that would provide poor quality private amenity space for future residents. The proposal would therefore fail to comply with Policy D6 of the London Plan (2021) and the and the Housing Design Standards LPG (2023).
The proposed development, due to its failure to provide adequate waste and recycling facilities would be incomplatible with the local waste collection system and harm to residential amenity and visual appearance of the site and surrounding area. As such, the proposal conflicts with Policy SI7 of the London Plan (2021).

From the council's decision notice.

Application details

Postcode: W3 7NN
Application type: Full planning permission

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.

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.

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

5 other applications at this property, newest first.

Source: Ealing

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

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