Planning application
117 Eccleston Mews London SW1X 8AQ
Works: Loft or dormer Roofing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Replacement of parapet coping stones, installation of rainwater downpipe to the rear elevation and installation of warm roof covering and rooflight, roof ventilation terminals and new roof mounted air source heat pump and privacy screen.
As published by the council, reference 26/01880/FULL
Application record
- Reference
- 26/01880/FULL
- Type
- Full Planning Permission Application
- Status
- Pending
- Received
- 23 Mar 2026
- Validated
- 12 Apr 2026
- Ward
- Knightsbridge & Belgravia
- Postcode
- SW1X 8AQ
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2025: 1 approved, 0 refused.
-
25/05762/FULL Granted
117 Eccleston Mews London SW1X 8AQ
External alterations to front and rear elevations including replacement windows, garage doors and window planter boxes, new wall lights, dome security cameras and alarm box; relocated boiler flue;; replacement roof covering and rooflight; and conversion of two garages into one.
Timeline
Dates from the published record
-
23 Mar 2026
Received by Westminster
-
12 Apr 2026
Validated
Checked as complete and ready for consideration.
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 7 June 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 65 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
RBD Architecture & Interiors Agent, an architecture practice
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
16 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 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 89 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 500 metres
-
117 Eccleston Mews London SW1X 8AQ
External alterations to front and rear elevations including replacement windows, garage doors and window planter boxes, new wall lights, dome security cameras and alarm box; relocated boiler flue;; replacement roof covering and rooflight; and conversion of two garages into one.
Granted Full applications Loft or dormer Roofing +1 32 docs -
15 Upper Belgrave Street London SW1X 8AB
Replacement doors to basement kitchen.
Granted Heritage and listed buildings 8 docs -
116 Eaton Square London SW1W 9AA
Replacement lightwell stair and balustrade, floor finishes and surface water drainage, undercroft bin store and new service entrance door.
Granted Heritage and listed buildings 7 docs -
116 Eaton Square London SW1W 9AA
Replacement lightwell stair and balustrade, floor finishes and surface water drainage, undercroft bin store and new service entrance door.
Granted Full applications 20 docs -
First Floor And Second Floor Maisonette 114 Eaton Square London SW1W 9AA
87% historically approved · decision due ~31 Aug
Installation of a new tiled balcony finish using a reversible pedestal system, together with the repair and redecoration of existing cast-iron railings where required, and the implementation of a landscaped planting scheme comprising freestanding planters. (Linked with 26/04478/LBC)
Awaiting decision Full applications 9 docs -
113 Eaton Square London SW1W 9AA
External alterations including infill of the rear lightwell at lower ground floor level, addition of rooflights, replacement windows and doors including replacing garage doors and use of the garage as habitable space at 113 Eccleston Mews. (Linked 25/06284/LBC)
Granted Full applications Extension Loft or dormer +1 38 docs
Other full applications
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26/06295/FULL Awaiting decision
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26/06297/FULL Awaiting decision
15 Warwick Way London SW1V 1QT
Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.
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26/06234/FULL Awaiting decision
40 Grosvenor Place London SW1X 7HJ
Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))
-
26/06249/FULL Awaiting decision
53 Wimpole Street London W1G 8YH
Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)
-
26/03576/FULL Decided
15A Devonshire Terrace London W2 3DW
Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)