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Planning application

46 Chester Square London SW1W 9EA

Decided Westminster 25/05494/FULL Full Planning Permission Application

Works: Extension Demolition Windows or glazing

Relates to 25/05497/LBC

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

External alterations including installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension, partial demolition and rebuilding of the mews building with excavation of basement extension and roof level plant equipment. (Linked RN: 25/05497/LBC)

As published by the council, reference 25/05494/FULL

Application record

Reference
25/05494/FULL
Type
Full Planning Permission Application
Status
Decided
Received
1 Aug 2025
Validated
1 Aug 2025
Decided
24 Feb 2026
Ward
Knightsbridge & Belgravia
Postcode
SW1W 9EA

Site history

Applications at this address on the Westminster register

This site has had 5 applications since 2025: 1 approved, 0 refused.

  • 25/07578/CLEUD Granted

    46 Chester Square London SW1W 9EA

    Use of 46 Chester Square and 46 Ebury Mews together as a single dwelling (Use Class C3).

    Decided 5 Nov 2025 Lawful development
  • 25/05498/FULL Withdrawn

    46 Chester Square London SW1W 9EA

    Erection of rear first floor orangery extension. (Linked RN: 25/05499/LBC)

    Decided 25 Sep 2025 Full applications
  • 25/05497/LBC Awaiting decision

    46 Chester Square London SW1W 9EA

    Internal and external alterations including refurbishment; replacement of ornamental scheme throughout; installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension; partial demolition and rebuilding of the mews building with evacuation of basement extension and roof level plant equipment. (Linked RN: 25/05494/FULL)

    Submitted 1 Aug 2025 Heritage and listed buildings
  • 25/05499/LBC Withdrawn

    46 Chester Square London SW1W 9EA

    Erection of rear first floor orangery extension. (Linked RN: 25/05498/FULL)

    Decided 25 Sep 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 1 Aug 2025

    Received by Westminster

  2. 24 Feb 2026

    Decision issued

  3. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 25/05497/LBC Awaiting decision

    46 Chester Square London SW1W 9EA

    Internal and external alterations including refurbishment; replacement of ornamental scheme throughout; installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension; partial demolition and rebuilding of the mews building with evacuation of basement extension and roof level plant equipment. (Linked RN: 25/05494/FULL)

    Submitted 1 Aug 2025 Heritage and listed buildings

1 later application on the register refers to this one:

  • 25/05497/LBC Awaiting decision

    46 Chester Square London SW1W 9EA

    Internal and external alterations including refurbishment; replacement of ornamental scheme throughout; installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension; partial demolition and rebuilding of the mews building with evacuation of basement extension and roof level plant equipment. (Linked RN: 25/05494/FULL)

    Submitted 1 Aug 2025 Heritage and listed buildings

Who's behind it

Company information only, from the register and Companies House

hgh Consulting Ltd Agent

423 applications on PlanIndex · across 42 councils · 90% granted

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

50 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

After the decision

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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

  • 46 Chester Square London SW1W 9EA

    25/05498/FULL Submitted 1 Aug 2025 50 yards away

    Erection of rear first floor orangery extension. (Linked RN: 25/05499/LBC)

    Withdrawn Full applications Extension 22 docs

  • 46 Chester Square London SW1W 9EA

    25/05497/LBC Submitted 1 Aug 2025 50 yards away

    90% historically approved · decision due ~26 Sep

    Internal and external alterations including refurbishment; replacement of ornamental scheme throughout; installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension; partial demolition and rebuilding of the mews building with evacuation of basement extension and roof level plant equipment. (Linked RN: 25/05494/FULL)

    Awaiting decision Heritage and listed buildings Extension Demolition +1 39 docs

  • 46 Chester Square London SW1W 9EA

    25/05499/LBC Submitted 1 Aug 2025 50 yards away

    Erection of rear first floor orangery extension. (Linked RN: 25/05498/FULL)

    Withdrawn Heritage and listed buildings Extension 18 docs

  • 47 Chester Square London SW1W 9EA

    25/08383/ADFULL Submitted 17 Nov 2025 50 yards away

    Details of Site Waste Management Plan, pursuant to condition 5 (A) of planning permission dated 10 September 2025 (RN 24/05375/FULL)

    Granted Full applications 6 docs

  • 46 Chester Square London SW1W 9EA

    25/07578/CLEUD Submitted 20 Oct 2025 50 yards away

    Use of 46 Chester Square and 46 Ebury Mews together as a single dwelling (Use Class C3).

    Granted Lawful development 51 docs
    Domestic

  • 47 Chester Square London SW1W 9EA

    25/08226/LBC Submitted 11 Nov 2025 50 yards away

    Rebuilding of the rear of the top floor mansard roof to the main house with new dormer windows and new monopitch rooflight to the stairwell below; awning removed to the closet wing; downpipes re-routed to rear elevation of main house; revisions to detailed design of glazed link; front door to Ebury Mews entrance enlarged and addition of flues above roof to the mews house.

    Granted Heritage and listed buildings Loft or dormer Windows or glazing 50 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