11 - 12 Chesham Place London SW1X 8HN

This site has had 2 applications since 2025: 2 approved, 0 refused.

• 25/08628/LBC Granted

  11 - 12 Chesham Place London SW1X 8HN

  Replacement of carrara marble treads and risers to front steps to match existing.

  Decided 21 May 2026 Heritage and listed buildings

1. 25 Nov 2025

   Received by Westminster

2. 25 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 May 2026

   Decision issued: Application Permitted

4. 1 Aug 2026

   Added to PlanIndex

Westminster granted permission on 21 May 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.

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.

• 11 - 12 Chesham Place London SW1X 8HN

  25/08628/LBC Submitted 25 Nov 2025 50 yards away

  Replacement of carrara marble treads and risers to front steps to match existing.

  Granted Heritage and listed buildings 15 docs

• 20 Chesham Mews London SW1X 8HS

  25/08508/ADFULL Submitted 20 Nov 2025 50 yards away

  Details of new glazing bars and mouldings pursuant to condition 5 of planning permission dated 30 May 2025 (RN: 25/01883/FULL)

  Refused Full applications Windows or glazing 3 docs

• 15 Chesham Mews London SW1X 8HS

  26/06478/FULL Submitted 22 Sep 2026 50 yards away

  88% historically approved · decision due ~25 Nov

  Erection of a single-storey conservatory at ground floor level incorporating a retractable louvred roof and glazed sliding doors.

  Awaiting decision Full applications Extension Windows or glazing
  Small domestic

• 4A Belgrave Mews West London SW1X 8HT

  25/05632/CLOPUD Submitted 12 Aug 2025 50 yards away

  Installation of an air source heat pump at roof level.

  Refused Lawful development 13 docs

• 20 Chesham Mews London SW1X 8HS

  26/00500/ADFULL Submitted 28 Jan 2026 50 yards away

  Detailed drawings of the windows pursuant to Condition 4 of planning permission dated 30th May 2025 (RN 25/01883/FULL).

  Granted Full applications Windows or glazing 9 docs

• 18 Belgrave Mews West London SW1X 8PX

  26/04375/ADLBC Submitted 2 Jul 2026 50 yards away

  89% historically approved · decision due ~27 Aug

  Details of a revised front elevation of 18 Belgrave Square showing the locations for the scaffold fixings pursuant to condition 5 Listed Building consent dated 5th June 2026 (RN:26/01147/LBC).

  Decided

• 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