Planning application
46 Manchester Street London W1U 7LS
Works: Extension Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Variation of Condition 7 of planning permission dated 25 September 2023 (RN: 22/05897/FULL) for, "Installation of 4x air source heat pumps at roof level, single-story extension to the existing rear ground floor to extend existing office use, erection of small closet extension to accommodate WCs at rear mid-ground/first and mid-first/second floors, replacement of non-original windows with double glazed timber sash windows, external repairs to building and associated works, all in association with continued office (Class E) use"; NAMELY, to allow the use of ground floor roof as a communal roof terrace for occupiers of the building. (Application under Section 73).
As published by the council, reference 25/08883/FULL
Application record
- Reference
- 25/08883/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 8 Dec 2025
- Validated
- 8 Dec 2025
- Decided
- 13 Apr 2026
- Ward
- Marylebone
- Decision by
- Complex Delegated Decision
- Postcode
- W1U 7LS
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2025: 2 approved, 0 refused.
-
25/08834/LBC Granted
46 Manchester Street London W1U 7LS
Installation of porcelain decking, liquid waterproofing and lead flashing to rear ground floor roof. (linked to 25/08883/FULL)
Timeline
Dates from the published record
-
8 Dec 2025
Received by Westminster
-
13 Apr 2026
Decision issued: Application Permitted
-
20 Jul 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
1 later application on the register refers to this one:
-
25/08834/LBC Granted
46 Manchester Street London W1U 7LS
Installation of porcelain decking, liquid waterproofing and lead flashing to rear ground floor roof. (linked to 25/08883/FULL)
Who's behind it
Company information only, from the register and Companies House
Garnett Architecture LLP Agent, an architecture practice registered in London
Active · incorporated 2003 · London
21 applications on PlanIndex · 100% granted
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Plans, drawings, consultee responses and the officer's report
21 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 13 April 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.
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45 Manchester Street London W1U 7LS
Details of method statement of repair of the plasterwork pursuant to condition 4 of listed building consent dated 19 June 2025 (RN: 24/04922/LBC)
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Installation of porcelain decking, liquid waterproofing and lead flashing to rear ground floor roof. (linked to 25/08883/FULL)
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26/06317/FULL Awaiting decision
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