Planning application
4 Biddulph Road London W9 1JB
Works: Extension Trees
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Details of Arboricultural Method Statement, Tree Protection Plan and drawings of the rear extension foundations pursuant to conditions 10 and 11 of planning permission dated 13th February 2026 (RN:25/07165/FULL).
As published by the council, reference 26/02504/ADFULL
Application record
- Reference
- 26/02504/ADFULL
- Type
- Approval of Details (Full PP)
- Status
- Pending
- Received
- 16 Apr 2026
- Validated
- 16 Apr 2026
- Ward
- Maida Vale
- Postcode
- W9 1JB
Site history
Applications at this address on the Westminster register
This site has had 9 applications since 2025: 2 approved, 1 refused.
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26/05348/FULL Decided
4 Biddulph Road London W9 1JB
Variation of condition 1 of planning permission dated 13 February 2026 (RN 25/07165/FULL), which itself varied condition 1 of planning permission dated 5th June 2025 (RN 25/01845/FULL), for: "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, to allow alteration to the rear/side roof design.
-
26/04221/ADFULL Decided
4 Biddulph Road London W9 1JB
Details of tree protection / void between foundations and soil, and rainwater mitigation pursuant to parial condition 10 (part A) and condition 11 of planning permission dated 05 January 2026 (RN: 25/07165/FULL)
-
26/03768/ADFULL Decided
4 Biddulph Road London W9 1JB
Completed Appendix A checklist from the Code of Construction Practice, signed by the applicant and approved by the Council's Environmental Sciences Team pursuant to condition 14 of planning permission dated 13th February 2026 (RN:25/07165/FULL).
-
26/01252/ADFULL Awaiting decision
4 Biddulph Road London W9 1JB
Details of Evidence of CoCP pursuant to Condition 14 of planning permission dated 05 June 2025 (RN: 25/01845/FULL)
-
26/00937/ADFULL Awaiting decision
4 Biddulph Road London W9 1JB
Details of Arboricultural Method Statement and Tree Protection Plan pursuant to Condition 10 of planning permission dated 05/06/2025 (RN: 25/01845/FULL)
-
25/08561/ADFULL Refused
4 Biddulph Road London W9 1JB
Details of Arboricultural Method Statement and Tree Protection Plan pursuant to condition 10 of planning permission dated 05 June 2025 (RN: 25/01845/FULL).
-
25/08498/FULL Granted
4 Biddulph Road London W9 1JB
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 with associated lightwells to front and rooflights to rear garden; installation of rooflights; Alterations to windows and doors; Creation of bin store to front garden; Landscaping works; provision of attenuation tank under part of front garden; and associated external alterations.
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25/07165/FULL Granted
4 Biddulph Road London W9 1JB
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 at ground and first floor levels; and a reduction of the side extension footprint to the front.
Timeline
Dates from the published record
-
16 Apr 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 11 June 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 65 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
23 Architecture Ltd Agent, an architecture practice registered in London
Active · incorporated 2007 · London
22 applications on PlanIndex · across 3 councils · 86% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
9 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 91 days. More in our guide to how long planning decisions take.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
4 Biddulph Road London W9 1JB
87% historically approved · decision due ~24 Apr
Details of Evidence of CoCP pursuant to Condition 14 of planning permission dated 05 June 2025 (RN: 25/01845/FULL)
Awaiting decision Full applications 5 docs -
4 Biddulph Road London W9 1JB
Details of Arboricultural Method Statement and Tree Protection Plan pursuant to condition 10 of planning permission dated 05 June 2025 (RN: 25/01845/FULL).
Refused Full applications Trees -
4 Biddulph Road London W9 1JB
87% historically approved · decision due ~10 Apr
Details of Arboricultural Method Statement and Tree Protection Plan pursuant to Condition 10 of planning permission dated 05/06/2025 (RN: 25/01845/FULL)
Awaiting decision Full applications Trees 11 docs -
4 Biddulph Road London W9 1JB
89% historically approved · decision due ~4 Aug
Completed Appendix A checklist from the Code of Construction Practice, signed by the applicant and approved by the Council's Environmental Sciences Team pursuant to condition 14 of planning permission dated 13th February 2026 (RN:25/07165/FULL).
Decided -
14 Biddulph Road London W9 1JB
89% historically approved · decision due ~28 Oct
Details of a biodiversity management plan, including detailed drawings of a hard and soft landscaping scheme; pursuant to condition 6 and 8 of planning permission dated 4th September 2025 (25/02833/FULL)
Awaiting decision -
4 Biddulph Road London W9 1JB
87% historically approved · decision due ~1 Oct
Variation of condition 1 of planning permission dated 13 February 2026 (RN 25/07165/FULL), which itself varied condition 1 of planning permission dated 5th June 2025 (RN 25/01845/FULL), for: "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, to allow alteration to the rear/side roof design.
Decided Full applications Extension Loft or dormer +1Small domestic
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