Planning application
25/05523/FULL
129 Randolph Avenue London W9 1DN
Proposal
Erection of a single storey rear extension with green roof and skylight at lower ground floor level; alterations to lower ground floor side windows and doors; replacement of existing windows with double glazed windows to match existing; and associated works.
As published by the council, reference 25/05523/FULL
Timeline
Dates from the published record
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7 Aug 2025
Received by Westminster
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15 Aug 2025
Validated
Checked as complete and ready for consideration.
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8 Oct 2025
Decision issued: Application Permitted
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21 Jul 2026
Added to PlanIndex
What 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
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26/01889/FULL Awaiting decision
129 Randolph Avenue London W9 1DN
Replacement of existing front boundary wall with new London Stock walls and Wrought Iron railings and access door and bin store.
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25/07958/NMA Awaiting decision
129 Randolph Avenue London W9 1DN
Amendments to planning permission dated 08 October 2025 (RN: 25/05523/FULL) for the: NAMELY, to allow the provision of a narrow, opaque, fixed timber-framed glazed panel along the side elevation of the newly approved rear extension and introduce a new sash window on the side elevation at lower ground floor level.
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25/06019/FULL Refused
129 Randolph Avenue London W9 1DN
Variation of condition 1 of planning permission dated 16th July 2025 (RN:25/02409/FULL) for the Erection of dormers to the rear and side slopes, installation of skylight to the roof crown and one small conservation rooflight to the side roofslope. Namely, to amend the size of the side dormer.
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25/07510/TCA Awaiting decision
Flat A Basement 137 Randolph Avenue London W9 1DN
The works relate to the large Bay tree shown on the site (T1). They relate to a whole crown reduction, including reducing the overall height by approximately 5m, and reducing the radius of the crown by approximately 1m. This tree has been pruned historically, but has since lapsed, and the pruning aims to balance its size with its location.
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26/04168/FULL Awaiting decision
129 Randolph Avenue London W9 1DN
Replacement of existing front boundary wall with new London Stock wall and Wrought Iron entrance gate spanning between two new brick piers to match the height of the pier shared with 127 Randolph Avenue.
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25/05930/ADFULL Awaiting decision
30 Ashworth Road W9 1JY
Detailed drawings of the acoustic enclosure pursuant to Condition 6 of planning permission dated 25 March 2025 (RN: 24/05928/FULL)
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26/04989/FULL Awaiting decision
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26/04986/FULL Awaiting decision
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