Planning application
64 Wimpole Street London W1G 8YS
Works: Extension Loft or dormer Roofing Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Erection of a new roof terrace and green roof area at rear 2nd floor level; installation of plant and photovoltaic panels at main roof level and new mansard roof extension and installation of plant on the mews roof level; alterations at ground floor front elevation; Internal and external alterations throughout the building in connection with a rear elevation extension from first to fourth floor levels and the reconfiguration of the existing fifth floor level, installation of new double glazed windows throughout all in connection with a change of use to Class E (e) medical use.
As published by the council, reference 26/01740/FULL
Application record
- Reference
- 26/01740/FULL
- Type
- Full Planning Permission Application
- Status
- Pending
- Received
- 18 Mar 2026
- Validated
- 18 Mar 2026
- Ward
- Marylebone
- Postcode
- W1G 8YS
Timeline
Dates from the published record
-
18 Mar 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 13 May 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 66 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Howard de Walden Estates Limited Agent, a developer registered in London
Active · incorporated 1963 · London
35 applications on PlanIndex
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Plans, drawings, consultee responses and the officer's report
88 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 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 91 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.
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