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Planning application

117 Eccleston Mews London SW1X 8AQ

Awaiting decision Westminster 26/01880/FULL Full Planning Permission Application

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.

    Decided 19 Feb 2026 Full applications

Timeline

Dates from the published record

  1. 23 Mar 2026

    Received by Westminster

  2. 12 Apr 2026

    Validated

    Checked as complete and ready for consideration.

  3. 21 Jul 2026

    Added to PlanIndex

  4. 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 91 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 record

Documents

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.

Watch members (£5 a month) open the document list from here.

Open the documents

What 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 119 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

  • 117 Eccleston Mews London SW1X 8AQ

    25/05762/FULL Submitted 15 Aug 2025 50 yards away

    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

    12/07140/LBC Submitted 12 Jul 2012 50 yards away

    Replacement doors to basement kitchen.

    Granted Heritage and listed buildings 8 docs

  • 116 Eaton Square London SW1W 9AA

    25/07517/LBC Submitted 16 Oct 2025 50 yards away

    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

    25/07516/FULL Submitted 16 Oct 2025 50 yards away

    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

    26/04477/FULL Submitted 6 Jul 2026 50 yards away

    88% 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

    25/06283/FULL Submitted 4 Sep 2025 50 yards away

    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

In Westminster

  • 26/07528/FULL Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

    Received 5 Nov, published by the council 6 Nov 2026 Full applications
  • 26/05200/FULL Decided

    1 The Court House 165 Seymour Place London W1H 4PU

    Installation of waterproofing system to the existing lead flat roofs

    Received 3 Aug, published by the council 28 Aug 2026 Full applications
  • 26/07521/FULL Awaiting decision

    Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

    Installation of one external condenser unit

    Received 4 Nov, published by the council 6 Nov 2026 Full applications
  • 26/07508/FULL Awaiting decision

    Buckingham Palace The Mall London SW1A 1AA

    Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

    Received 4 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07472/FULL Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

    Received 3 Nov, published by the council 6 Nov 2026 Full applications