Planning application
Flat 2 13 Montagu Street London W1H 7EX
Works: Windows or glazing
Relates to 25/04426/LBC
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04426/LBC)
As published by the council, reference 25/04425/FULL
Application record
- Reference
- 25/04425/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Application Permitted
- Received
- 27 Jun 2025
- Validated
- 3 Jul 2025
- Decided
- 20 Feb 2026
- Ward
- Marylebone
- Decision by
- Delegated Decision
- Postcode
- W1H 7EX
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2025: 2 approved, 0 refused.
-
25/04426/LBC Granted
Flat 2 13 Montagu Street London W1H 7EX
Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04425/FULL)
Timeline
Dates from the published record
-
27 Jun 2025
Received by Westminster
-
3 Jul 2025
Validated
Checked as complete and ready for consideration.
-
20 Feb 2026
Decision issued: Application Permitted
-
30 Aug 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
-
25/04426/LBC Granted
Flat 2 13 Montagu Street London W1H 7EX
Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04425/FULL)
1 later application on the register refers to this one:
-
25/04426/LBC Granted
Flat 2 13 Montagu Street London W1H 7EX
Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04425/FULL)
Who's behind it
Company information only, from the register and Companies House
Agent on file, registered in Sidcup
56 applications on PlanIndex · across 7 councils · 98% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
31 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.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Westminster granted permission on 20 February 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 500 metres
-
Flat 2 13 Montagu Street London W1H 7EX
Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04425/FULL)
Granted Heritage and listed buildings Windows or glazing 29 docs -
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87% historically approved · decision due ~28 Jul
Details of all new windows, omission of the rooflight to the front roof slope conservation rooflight and main door pursuant to conditions 4, 5 and 6 of planning permission dated 7th May 2026 (RN:26/00330).
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Awaiting decision Full applications Windows or glazing 8 docs -
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Refused Lawful development 61 docs -
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