Planning application
4 Biddulph Road London W9 1JB
Works: Extension Loft or dormer Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
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.
As published by the council, reference 25/08498/FULL
Application record
- Reference
- 25/08498/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Application Permitted
- Received
- 20 Nov 2025
- Validated
- 20 Nov 2025
- Decided
- 12 Jun 2026
- Ward
- Maida Vale
- Decision by
- Complex Delegated Decision
- Postcode
- W9 1JB
Timeline
Dates from the published record
-
20 Nov 2025
Received by Westminster
-
12 Jun 2026
Decision issued: Application Permitted
-
20 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice registered in London
4 applications on PlanIndex
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
35 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.
Trade members open them from here.
Open the documentsWhat a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
-
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.
Granted Full applications Extension Loft or dormer +1 18 docsSmall domestic -
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.
Awaiting decision Full applications Extension Loft or dormer +1Small domestic -
4 Biddulph Road London W9 1JB
89% historically approved · decision due ~20 Aug
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)
Decided Trees -
4 Biddulph Road London W9 1JB
87% historically approved · decision due ~11 Jun
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).
Awaiting decision Full applications Extension Trees 9 docs
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