Planning application
9 Seymour Mews London W1H 6BE
Works: Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Replacement of existing single glazed timber windows with new double glazed windows.
As published by the council, reference 25/05476/FULL
Application record
- Reference
- 25/05476/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 5 Aug 2025
- Validated
- 5 Aug 2025
- Decided
- 30 Sep 2025
- Ward
- Marylebone
- Decision by
- Delegated Decision
- Postcode
- W1H 6BE
Timeline
Dates from the published record
-
5 Aug 2025
Received by Westminster
-
30 Sep 2025
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
MDB Associates Agent, registered in York
Active · incorporated 2002 · York
22 applications on PlanIndex · across 5 councils · 100% granted
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Plans, drawings, consultee responses and the officer's report
8 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 30 September 2025, 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
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11 Seymour Mews London W1H 6BE
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i) External alterations in connection with use of No. 11 as a 2x bedroom house.ii) Demolition behind retained facade of Nos. 15 and 16 to be used for office purposes. (Part of a use swap with 18 and 20 Seymour Place)
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Details of Code of Construction Practice pursuant to Condition 3 of planning permission dated 05 September 2024 (RN24/02777/FULL)
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Demolition of internal partitions, internal staircases in No. 11 and internal party wall of Nos. 15 and 16. Removal of internal fabric to create large open plan area for Nos. 15-16. Refurbishment of roof structure to Nos. 15 and 16.
Withdrawn Heritage and listed buildings Demolition 4 docs -
11 Seymour Mews London W1H 6BE
External alterations to 11, 15 and 16 Seymour Mews to provide residential (1x2 bed maisonette) and office (Class B1) accommodation.
Withdrawn Full applications 15 docs -
6 Seymour Mews London W1H 6BE
Amendments to planning permission dated 5th September 2024 (RN: 24/02777/FULL) for External alterations, extension at ground floor, excavation to provide new basement, and the installation of an air source heat pump; all to enlarge and alter dwellinghouse (Class C3) namely; to alter the colours of the front ground floor facade elements (the main entrance door, garage door, windows, and rendered lintel).
Granted Amendments Extension Windows or glazing 9 docsDomestic
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