Planning application
10 Great Castle Street London W1W 8LP
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Variation of condition 4 of planning permission dated 15th August 2024 (RN 24/02645/FULL) for the installation of diesel back-up generator on the first floor terrace. NAMELY, to amend the condition to clarify that the generator may be used to maintain essential operational, financial, and security systems during power outages; Confirm that it will not be used for commercial energy supply or grid-support services such as STOR; and Retain the approved noise limits and testing restrictions to ensure there is no additional environmental impact.
As published by the council, reference 26/01708/FULL
Application record
- Reference
- 26/01708/FULL
- Type
- Full Planning Permission Application
- Status
- Pending
- Received
- 17 Mar 2026
- Validated
- 17 Mar 2026
- Ward
- West End
- Postcode
- W1W 8LP
Timeline
Dates from the published record
-
17 Mar 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 12 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
Tye Architects Agent, an architecture practice registered in Bedford
Active · incorporated 2019 · Bedford
13 applications on PlanIndex · across 10 councils · 90% 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 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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