Planning application
Flat 5 6 West Halkin Street London SW1X 8JA
Works: Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Alterations to existing flat roof at rear third floor level to form a roof terrace, raising of the parapet, installation of decking and replacement of window with a door at rear third floor level.
As published by the council, reference 25/08069/FULL
Application record
- Reference
- 25/08069/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 5 Nov 2025
- Validated
- 17 Nov 2025
- Decided
- 12 Mar 2026
- Ward
- Knightsbridge & Belgravia
- Decision by
- Delegated Decision
- Postcode
- SW1X 8JA
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2025: 2 approved, 0 refused.
-
25/08070/LBC Granted
Flat 5 6 West Halkin Street London SW1X 8JA
Alterations to existing flat roof at rear third floor level to form a roof terrace, raising of the parapet, installation of decking and replacement of window with a door at rear third floor level.
Timeline
Dates from the published record
-
5 Nov 2025
Received by Westminster
-
17 Nov 2025
Validated
Checked as complete and ready for consideration.
-
12 Mar 2026
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Studio Act Agent
3 applications on PlanIndex
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See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
33 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.
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Open the documentsWhat this grant of permission means
Westminster granted permission on 12 March 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
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
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Flat 5 6 West Halkin Street London SW1X 8JA
Alterations to existing flat roof at rear third floor level to form a roof terrace, raising of the parapet, installation of decking and replacement of window with a door at rear third floor level.
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