Planning application
Smithson Tower 25 St James's Street London SW1A 1HA
Works: Roofing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Installation of new external ductwork and associated external alterations to fifth floor roof level including replacement roof membranes, access hatch and installation of a maintenance-only door to existing roof plant enclosure.
As published by the council, reference 25/09168/FULL
Application record
- Reference
- 25/09168/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 18 Dec 2025
- Validated
- 18 Dec 2025
- Decided
- 26 Mar 2026
- Ward
- St James's
- Decision by
- Delegated Decision
- Postcode
- SW1A 1HA
Site history
Applications at this address on the Westminster register
This site has had 4 applications since 2025: 4 approved, 0 refused.
-
26/00095/LBC Granted
Smithson Tower 25 St James's Street London SW1A 1HA
Installation of 120 metres of fibre telecommunications cable from the 13th floor communications room to the basement intake room.
-
25/09169/LBC Granted
Smithson Tower 25 St James's Street London SW1A 1HA
Installation of new external ductwork and associated external alterations to fifth floor roof level including replacement roof membranes, access hatch and installation of a maintenance-only door to existing roof plant enclosure.
-
25/06943/FULL Granted
Smithson Tower 25 St James's Street London SW1A 1HA
Use of two areas for outdoor seating comprising 16 tables and 56 chairs, two parasols and a waiter station at plaza level (Land to front of and adjacent to 25 St James's Street).
Timeline
Dates from the published record
-
18 Dec 2025
Received by Westminster
-
26 Mar 2026
Decision issued: Application Permitted
-
20 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
DP9 Ltd Agent
Active · incorporated 2004
2,655 applications on PlanIndex · across 36 councils · 98% granted
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See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
24 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 26 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
Within 0.3 miles
-
Smithson Tower 25 St James's Street London SW1A 1HA
Installation of 120 metres of fibre telecommunications cable from the 13th floor communications room to the basement intake room.
Granted Heritage and listed buildings 15 docs -
Basement And Ground Floor Smithson Tower 25 St James's Street London SW1A 1HA
Installation of a fascia sign, a wall plaque and 8 vinyl logos behind glazing.
Granted Heritage and listed buildings Windows or glazing 16 docs -
Basement And Ground Floor Smithson Tower 25 St James's Street London SW1A 1HA
Display of non-illuminated fascia sign measuring 0.63m x 0.22m; and wall plaque sign measuring 0.28m x 0.45m.
Granted Advertising 8 docs -
Denham Building 27 St James's Street London SW1A 1HA
90% historically approved · decision due ~14 May
Creation of new landscaping including the installation of new planting, external lighting, street furniture and replacement entrance to the Bank Building fronting the Smithson Plaza. (Linked with 26/01779/FULL)
Awaiting decision Heritage and listed buildings 3 docs -
Denham Building 27 St James's Street London SW1A 1HA
88% historically approved · decision due ~14 May
Creation of new landscaping including the installation of new planting, external lighting, street furniture and replacement entrance to the Bank Building fronting the Smithson Plaza. (Linked with 26/01780/LBC)
Awaiting decision Full applications 10 docs -
Smithson Tower 25 St James's Street London SW1A 1HA
Installation of new external ductwork and associated external alterations to fifth floor roof level including replacement roof membranes, access hatch and installation of a maintenance-only door to existing roof plant enclosure.
Granted Heritage and listed buildings Roofing 23 docs
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