4 Biddulph Road London W9 1JB

25/07165/FULLFull Planning Permission ApplicationApproved

Full

Approved on 13 February 2026

Site boundary (council red line)

Proposal

Variation of condition 1 of planning permission dated 5th June 2025 (RN 25/01845/FULL) for the Erection of rear extensions at ground and first floor levels, single storey side extension at ground floor level, and rear roof dormer; Excavation to extend existing basement level; installation of rooflights; Alterations to windows and doors; Creation of bin store to front garden; Landscaping works; and associated external alterations. NAMELY, amendments to the front and rear fenestration; new window to rear first floor; amendment to the dormer position; amendment to rooflights; extension of the rear gable end wall; and a reduction of the side extension footprint to the front.

Received: 3 October 2025
Council: City of Westminster
Ward: Maida Vale
Agent: 23 Architecture + Interiors

ReceivedReceived3 Oct
ValidatedValidated3 Oct
Consult.Consultation
TargetTarget Date28 Nov
DecidedDecided13 Feb

Decided in 133 days (council typically 49)

About this application

This is a full planning application for a single storey side extension at 4 Biddulph Road London W9 1JB. Westminster has handled 4,484 applications of this type. This one was decided in 133 days, 12 weeks longer than Westminster's typical decision time. The site is in the Maida Vale conservation area. There have been 5 other applications at this address. In the past year there have been 20 applications across Maida Vale. We hold 1,425 applications in total for the W9 postcode area.

86% of full applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode: W9 1JB
Application type: Full Planning Permission Application
Scale / size: Small

Planning application dates

Date validated: 3 October 2025
Target decision date: 28 November 2025

Applicant and agent

Agent: 23 Architecture + Interiors
Agent address: 101 Freston Road London W11 4BD United Kingdom

Planning decision

Statutory period: 56 days

Additional information

Planning Portal ID: PP-14364356
Comments: 0
Documents: 10

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: Maida Vale
Article 4 direction: Article 4 Basement Development Permitted Rights Removed
Flood zone 1: Low probability (rivers and sea)

Also checked, none recorded (22)

flood storage 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.

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

2026
6 Aug
Variation of condition 1 of planning permission dated 13 February 2026 (RN 25/07165/FULL
ApprovedVariation of conditions (s73)26/05348/FULL
2026
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Details of Evidence of CoCP pursuant to Condition 14 of planning permission dated 05 June 2025 (RN…
ApprovedDischarge of conditions26/01252/ADFULL
2026
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Details of Arboricultural Method Statement and Tree Protection Plan pursuant to Condition 10 of planning…
ApprovedDischarge of conditions26/00937/ADFULL
2025
21 Nov
Details of Arboricultural Method Statement and Tree Protection Plan pursuant to condition 10 of planning…
RefusedDischarge of conditions25/08561/ADFULL
2025
3 Oct
Variation of condition 1 of planning permission dated 5th June 2025 (RN 25/01845/FULL
This applicationApprovedVariation of conditions (s73)25/07165/FULL
2025
27 Mar
Erection of rear extensions at ground and first floor levels, single storey side extension at ground floor…
ApprovedHouseholderPart of25/01845/FULL

Planning history at this site

5 other applications at this property, newest first.

Source: Westminster

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

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