Planning application
25/05957/FULL
First Floor To Third Floor 1 Lower John Street London W1F 9DT
Proposal
Variation of condition 1 of planning permission dated 14th May 2025 (RN:24/08966/FULL) for the Erection of new mansard roof extension to building in connection with change of use of upper levels from restaurant (Use Class E(b)) to 2x1-bed flats and 1x2-bed maisonette (Use Class C3). Alterations to facade including replacement of single glazed windows with timber-framed slimline double-glazed windows at 1 Lower John Street. Increase height of chimney stack to boundary shared with 1 Lower John Street at 2 Lower John Street. Namely, amendments to the elevations to include air bricks and to retain the single soil vent to facilitate internal services arrangements (Application under section 73 of the Act)
As published by the council, reference 25/05957/FULL
Timeline
Dates from the published record
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21 Aug 2025
Received by Westminster
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10 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.
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