Planning application
3 St James's Square London SW1Y 4JU
Works: Extension Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Alterations to the St. James's Square facade including replacement of windows and entrances, at main roof level addition of roof pavilion extension, plant equipment and enclosures, with roof terraces at eight and ninth floor levels and a rear extension to accommodate a lift shaft and associated works.
As published by the council, reference 26/00858/FULL
Application record
- Reference
- 26/00858/FULL
- Type
- Full Planning Permission Application
- Status
- Pending
- Received
- 12 Feb 2026
- Validated
- 12 Feb 2026
- Ward
- St James's
- Postcode
- SW1Y 4JU
Site history
Applications at this address on the Westminster register
This site has had 3 applications since 2025: 2 approved, 0 refused.
-
25/08682/FULL Granted
3 St James's Square London SW1Y 4JU
Replacement and enlargement of one existing rooflight.
-
25/05780/FULL Granted
3 St James's Square London SW1Y 4JU
Extension of lift overrun at roof level and associated works.
Timeline
Dates from the published record
-
12 Feb 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 9 April 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 65 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Newmark Gerald Eve LLP Agent, registered in London
Active · incorporated 2008 · London
162 applications on PlanIndex · across 17 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
25 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.
Nearby applications
Within 0.3 miles
-
3 St James's Square London SW1Y 4JU
Replacement and enlargement of one existing rooflight.
Granted Full applications Loft or dormer 16 docs -
3 St James's Square London SW1Y 4JU
Extension of lift overrun at roof level and associated works.
Granted Full applications Extension 19 docs -
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Details of annotated elevations showing the precise location of each external item; full product specifications, finishes and dimensions; sections and fixing details demonstrating how each item will be attached to the listed fabric; and confirmation of cable routes, penetrations and any making good of historic fabric pursuant to Condition 4 of planning permission dated 19 March 2026 (RN: 25/07345/FULL).
Decided -
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