Planning application
5 - 6 William Street London SW1X 9HL
Works: Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Installation of seven new French doors with fanlights at front elevation facing William Street; three pairs of sash windows into existing timber box frames; one new single door, including a sidelight and fanlight at rear elevation; and other associated works to first floor.
As published by the council, reference 25/04470/LBC
Application record
- Reference
- 25/04470/LBC
- Type
- Listed Building Consent Application
- Status
- Decided
- Decision
- Application Permitted
- Received
- 30 Jun 2025
- Validated
- 3 Jul 2025
- Decided
- 9 Mar 2026
- Ward
- Knightsbridge & Belgravia
- Decision by
- Delegated Decision
- Postcode
- SW1X 9HL
Timeline
Dates from the published record
-
30 Jun 2025
Received by Westminster
-
3 Jul 2025
Validated
Checked as complete and ready for consideration.
-
9 Mar 2026
Decision issued: Application Permitted
-
30 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
18 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.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Westminster granted permission on 9 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 heritage and listed building applications
Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.
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