Planning application
26/01509/ADFULL
54 Chester Square London SW1W 9EA
Proposal
Detailed drawings of new infill roof and boundary wall trellis pursuant to Condition 4 of planning permission dated 20th February 2026 (RN: 25/08369/FULL).
As published by the council, reference 26/01509/ADFULL
Timeline
Dates from the published record
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9 Mar 2026
Received by Westminster
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11 Mar 2026
Validated
Checked as complete and ready for consideration.
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20 Mar 2026
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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26/00891/ADFULL Awaiting decision
47 Chester Square London SW1W 9EA
Details of signed Appendix A pursuant to Condition 9 of planning permission dated 10 September 2025 (RN24/05375/FULL)
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26/01153/ADFULL Refused
60 Chester Square London SW1W 9EA
Details of CCTV fixtures showing their design, size and position, and relationship with existing architectural detailing and dormers pursuant to condition 4 parts 1 and 3 and, photo sample of roofing slate pursuant to part-discharge of condition 5 of planning permission dated 11th November 2025 (RN: 25/06259/FULL).
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25/08140/ADFULL Awaiting decision
47 Chester Square London SW1W 9EA
Details of contaminated land investigation pursuant to Condition 8 (phase 1-3) of planning permission dated 10th September 2025 (RN: 24/05375/FULL).
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26/02962/ADFULL Awaiting decision
47 Chester Square London SW1W 9EA
Details of facing materials including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to discharge of condition 4 of planing permission dated 10th September 2025 (RN: 24/05476/LBC). Linked to 26/02877/ADLBC
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26/04326/ADFULL Awaiting decision
60 Chester Square London SW1W 9EA
Detailed drawings of the CCTV fixtures showing their design, size and position, and relationship with existing architectural detailing, new external balustrades, Dormer Construction Details, Roof Slate Samples, External Paving Material Samples and Material Location Plan pursuant to conditions 4, 5 of planning permission dated 9th November 2025 (RN 25/06259/FULL)
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26/04384/ADLBC Awaiting decision
60 Chester Square London SW1W 9EA
Detailed drawings of the CCTV fixtures showing their design, size and position, and relationship with existing architectural detailing, new external balustrades; Dormer Construction Details; Roof Slate Samples; External Paving Material Samples and Material Location Plan; amended third floor plan to show existing door opening to rear bedroom retained in existing original location pursuant to conditions 4, 5, 9 of listed building consent dated 9th November 2025 (RN 25/06260/LBC) (Linked to 26/04326/ADFULL)
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Details of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 5 of planning permission dated 18th November 2025 (RN:25/06159).
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26/04989/FULL Awaiting decision
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Erection of a mansard roof extending over the main house and side wing, replacement lower ground rear extension with roof terrace above, lowering of lower ground floor slab, installation of an air source heat pump in rear garden, new front boundary treatment, and new second floor window on the north elevation.
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26/04986/FULL Awaiting decision
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