Planning application
26/02286/ADFULL
17 William Mews London SW1X 9HF
Proposal
Details of all flood resilient and resistant measures (including finished floor levels) pursuant to condition 4 of planning permission dated 17th June 2025 (RN: 24/07507/FULL).
As published by the council, reference 26/02286/ADFULL
Timeline
Dates from the published record
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7 Apr 2026
Received by Westminster
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21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
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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26/02952/NMA Awaiting decision
17 William Mews London SW1X 9HF
Amendments to planning permission dated 12 June 2025 (RN: 24/07507/FULL) for the erection of a roof extension and alterations to existing front elevation and fenestration. Excavation of a new basement below part existing dwellinghouse.; NAMELY minor amendments to the ground floor front elevation including revisions to the approved window openings, together with associated minor internal reconfiguration works.
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26/02696/CLLB Awaiting decision
11 Lowndes Square London SW1X 9HB
External repairs and redecoration to the front and rear elevations; and other associated works at 11-12 Lowndes Square.
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26/04409/FULL Awaiting decision
17 William Mews London SW1X 9HF
Variation of condition 1 of planning permission dated 12 June 2025 (RN: 24/07507/FULL) for the erection of a roof extension and alterations to existing front elevation and fenestration; excavation of a new basement below part existing dwellinghouse; Namely, amendments to the ground floor windows.
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25/09117/FULL Granted
43 William Mews London SW1X 9HQ
Erection of an infill extension at ground and first floor rear replacing the existing first floor enclosed balcony and the ground floor undercroft; installation of new rooflight on main roof.
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26/02928/FULL Awaiting decision
25 Kinnerton Street London SW1X 8EA
Extensions at rear, roof and basement levels to create 2 x 5 bedroom dwellings at 25 and 27 Kinnerton Street; new rear balconies at second floor level, PV panels, green roofs and associated works. (SITE 25 & 27 Kinnerton Street)
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25/08053/CLOPUD Awaiting decision
45 William Mews London SW1X 9HQ
Replacement of existing single glazed windows and doors with double glazed timber windows and doors.
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26/04829/ADFULL Granted
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26/04841/ADFULL Granted
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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
1 Kildare Terrace London W2 5JT
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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Replacement of combustible materials in the render facades; timber decking and plastic soffits/ fascias to terraces with non-combustible materials on the 5th and 6th floors.