Planning application
9 Bentinck Mews London W1U 2AN
Works: Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Installation of an external air source heat pump and replacement of an existing (bathroom) window at rear first floor.
As published by the council, reference 25/09158/FULL
Application record
- Reference
- 25/09158/FULL
- Type
- Full Planning Permission Application
- Status
- Pending
- Received
- 18 Dec 2025
- Validated
- 18 Dec 2025
- Ward
- Marylebone
- Postcode
- W1U 2AN
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2025.
-
26/03118/FULL Awaiting decision
9 Bentinck Mews London W1U 2AN
Removal of condition 3 of planning permission dated 30th August 2007 (RN: 07/02886/FULL) for the Alterations including the erection of an additional storey in connection with conversion to two single family dwellings (Class C3) including a 3 bedroom house with integral garage at No.9 and a 2 bedroom house at No.10. Namely, to remove condition 3 which restricts the use of the garage to people living in the property.
Timeline
Dates from the published record
-
18 Dec 2025
Received by Westminster
-
20 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 12 February 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 66 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
The Howard De Walden Estate Limited Agent
5 applications on PlanIndex
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.
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Open the documentsWhat happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 91 days. More in our guide to how long planning decisions take.
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
-
9 Bentinck Mews London W1U 2AN
87% historically approved · decision due ~7 Jul
Removal of condition 3 of planning permission dated 30th August 2007 (RN: 07/02886/FULL) for the Alterations including the erection of an additional storey in connection with conversion to two single family dwellings (Class C3) including a 3 bedroom house with integral garage at No.9 and a 2 bedroom house at No.10. Namely, to remove condition 3 which restricts the use of the garage to people living in the property.
Awaiting decision Full applications 11 docs -
7 Bulstrode Street London W1U 2JB
87% historically approved · decision due ~25 Sep
Replacement of two polycarbonate domed rooflights with timber framed rooflights. (Linked with 26/05185/LBC)
Awaiting decision Full applications Loft or dormer -
7 Bulstrode Street London W1U 2JB
90% historically approved · decision due ~25 Sep
Replacement of two polycarbonate domed rooflights with timber framed rooflights. (Linked with 26/05184/FULL)
Awaiting decision Heritage and listed buildings Loft or dormer -
3 Bulstrode Street London W1U 2JB
87% historically approved · decision due ~25 Sep
Replacement of three Georgian wired timber framed rooflights with double glazed timber framed rooflights. (Linked with 26/05183/LBC)
Awaiting decision Full applications Loft or dormer Windows or glazing -
3 Bulstrode Street London W1U 2JB
90% historically approved · decision due ~25 Sep
Replacement of three Georgian wired timber framed rooflights with double glazed timber framed rooflights. (Linked with 26/05182/FULL)
Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing -
4 Bentinck Street London W1U 2EF
Erection of a pergola at second floor with retractable awning and installation of bi-fold doors to the second-floor terrace.
Granted Full applications Windows or glazing 21 docs
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