Planning application
3 Great Cumberland Mews London W1H 7DZ
Works: Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Conversion of the existing ground-floor garage into habitable residential accommodation; enlargement of the rear window in the existing utility room; and installation of air conditioning unit at rear ground floor patio.
As published by the council, reference 25/08713/FULL
Application record
- Reference
- 25/08713/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 28 Nov 2025
- Validated
- 15 Jan 2026
- Decided
- 16 Apr 2026
- Ward
- Marylebone
- Decision by
- Delegated Decision
- Postcode
- W1H 7DZ
Site history
Applications at this address on the Westminster register
This site has had 3 applications since 2025: 1 approved, 0 refused.
-
26/02789/ADFULL Awaiting decision
3 Great Cumberland Mews London W1H 7DZ
Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 7 of planning permission dated 16th April 2026 (RN:25/08713/FULL)
-
26/02789/FULL Awaiting decision
3 Great Cumberland Mews London W1H 7DZ
Removal of Condition 7 of planning permission dated 16th April 2026 (RN: 25/08713/FULL) to remove the requirement to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site.
Timeline
Dates from the published record
-
28 Nov 2025
Received by Westminster
-
15 Jan 2026
Validated
Checked as complete and ready for consideration.
-
16 Apr 2026
Decision issued: Application Permitted
-
20 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Vernon Architects Agent, an architecture practice registered in London
Active · incorporated 2014 · London
7 applications on PlanIndex · across 2 councils
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
13 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 this grant of permission means
Westminster granted permission on 16 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.
Nearby applications
Within 0.3 miles
-
3 Great Cumberland Mews London W1H 7DZ
87% historically approved · decision due ~22 Jun
Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 7 of planning permission dated 16th April 2026 (RN:25/08713/FULL)
Awaiting decision Full applications 5 docs -
3 Great Cumberland Mews London W1H 7DZ
87% historically approved · decision due ~5 Jul
Removal of Condition 7 of planning permission dated 16th April 2026 (RN: 25/08713/FULL) to remove the requirement to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site.
Awaiting decision Full applications 9 docs -
15 Great Cumberland Mews London W1H 7DZ
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Granted Full applications 5 docs -
15 Great Cumberland Mews London W1H 7DZ
Windows pursuant to Condition 3 of planning permission dated 26 July 2007 (RN: 06/03803).
Granted Full applications Windows or glazing 3 docs -
15 Great Cumberland Mews London W1H 7DZ
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Granted Full applications 26 docs
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