Planning application
78 Chester Square London SW1W 9DU
Works: Loft or dormer Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Detailed drawings (sections and elevations at a scale of 1:10 and/or 1:20) of the new windows and doors (to be annotated to correspond to rooms and floor level) and detailed drawings of section drawing (scale of 1:10) through the mansard showing the dormer window and shoulder of the mansard (see informative 6) pursuant to condition 6 and 9 of planning permission dated 17th May 2024 (RN:24/00172/FULL)
As published by the council, reference 26/03262/ADFULL
Application record
- Reference
- 26/03262/ADFULL
- Type
- Approval of Details (Full PP)
- Status
- Pending
- Received
- 18 May 2026
- Validated
- 18 May 2026
- Ward
- Knightsbridge & Belgravia
- Postcode
- SW1W 9DU
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2026.
-
26/03241/ADLBC Awaiting decision
78 Chester Square London SW1W 9DU
detailed drawings (sections and elevations at a scale of 1:10 and/or 1:20) of the new windows and doors (to be annotated to correspond to rooms and floor level) and detailed drawings of section drawing (scale of 1:10) through the mansard showing the dormer window and shoulder of the mansard (see informative 3) pursuant to condition 3 (A), 6 of listed building dated 17th May 2024 (RN:24/00173/LBC)
Timeline
Dates from the published record
-
18 May 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 13 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 91 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
ADL Planning Pty Ltd Agent, a planning consultancy
105 applications on PlanIndex · across 7 councils · 91% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
9 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 119 days. More in our guide to how long planning decisions take.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
78 Chester Square London SW1W 9DU
89% historically approved · decision due ~13 Jul
detailed drawings (sections and elevations at a scale of 1:10 and/or 1:20) of the new windows and doors (to be annotated to correspond to rooms and floor level) and detailed drawings of section drawing (scale of 1:10) through the mansard showing the dormer window and shoulder of the mansard (see informative 3) pursuant to condition 3 (A), 6 of listed building dated 17th May 2024 (RN:24/00173/LBC)
Awaiting decision Conditions Loft or dormer Windows or glazing 9 docs -
79 Chester Square London SW1W 9DU
89% historically approved · decision due ~2 Jul
Details of new interior, which must be appropriate to the period of the building and their location; pursuant to condition 3 (part iii) of Listed Building Consent dated 11th January 2023 (RN 22/05928/LBC)
Awaiting decision Conditions 4 docs -
79 Chester Square London SW1W 9DU
88% historically approved · decision due ~1 Jul
Details of biodiversity management plan in relation to second floor green roof pursuant to condition 9 (partial) of planning permission dated 13 December 2022 (RN: 22/05927/FULL)
Awaiting decision Full applications 9 docs -
79 Chester Square London SW1W 9DU
89% historically approved · decision due ~15 Oct
Details of a further noise report to confirm a fixed maximum noise level pursuant to condition 12 (part 3) of planning permission dated 05 January 2023 (RN: 22/05927/FULL).
Decided -
79 Chester Square London SW1W 9DU
90% historically approved · decision due ~20 Aug
Reconfiguration of the approved photovoltaic array, including changing approved array to one with a lower number of higher performing panels and changing the mounting system (Amendment of Listed Building Consent dated 11 January 2023 RN: 22/05928/LBC.) (Linked with 26/04196/NMA)
Awaiting decision Heritage and listed buildings -
79 Chester Square London SW1W 9DU
Detailed drawings and the manufacturers specification; of the photovoltaic panels that will be used on main roof and the roof of the mews building; pursuant condition 14 of Planning Permission dated 5th January 2023 (RN 22/05927/FULL)
Decided
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