Planning application
25/05662/FULL
132 Seymour Place London W1H 1NS
Proposal
Demolition of existing first floor rear extension and construction of a proposed full width first floor and part width second to third floor rear extension with rear second floor roof terrace, to extend existing flats (ClassC3).
As published by the council, reference 25/05662/FULL
Timeline
Dates from the published record
-
12 Aug 2025
Received by Westminster
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26 Aug 2025
Validated
Checked as complete and ready for consideration.
-
21 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
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25/05437/CLEUD Granted
134 - 136 Seymour Place London W1H 1NT
Confirmation that the current use of the building falls within Class E of the Town and Country Planning (Use Classes) Order 1987 (as amended) is lawful.
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26/01719/FULL Awaiting decision
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26/02978/TCA Awaiting decision
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04/05783/AD7 Granted
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05/07604/FULL Withdrawn
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05/07606/FULL Granted
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26/04989/FULL Awaiting decision
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26/04986/FULL Awaiting decision
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