26 Eastcastle Street London W1W 8DF

1. 11 Sep 2025

   Received by Westminster

2. 30 Oct 2025

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 30 October 2025, 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.

• Basement And Ground Floor 23 - 25 Eastcastle Street London W1W 8DF

  26/02585/ADV Submitted 20 Apr 2026 50 yards away

  82% historically approved · decision due ~15 Jun

  Display of two non-illuminated window posters measuring 3.32m x 2.98m and 3.32m x 3m. (Retrospective)

  Awaiting decision Advertising Windows or glazing 10 docs

• 30 Eastcastle Street London W1W 8DJ

  11/11096/EEN Submitted 14 Nov 2011 50 yards away

  Replacement of roof and internal alterations including installation of lift.

  Granted 10 docs

• 82 Margaret Street London W1W 8LH

  26/01972/ADLBC Submitted 25 Mar 2026 50 yards away

  89% historically approved · decision due ~10 Jun

  Detailed drawings of the new windows and roof lights including key junctions with existing or adjoining fabric and details of open ability, new doors, including key junctions with existing or adjoining fabric, railings, including key junctions with existing or adjoining fabric,detailed study of the 'laundry' with detailed drawings of proposals, including key junctions with existing or adjoining fabric and proposed openings, conservation strategy and restoration/conservation details for the chapel including method statements and reports, in consultation with the Victorian Society, floor build ups including key junctions with existing or adjoining fabric and threshold junctions, coordinated and accurately detailed services and distribution including key junctions with existing or adjoining fabric pursuant to condition 6 (1-7) of listed building dated 10th November 2025 (RN: 25/03052/LBC)

  Decided Loft or dormer Windows or glazing 79 docs

• 82 Margaret Street London W1W 8LH

  26/07113/ADFULL Submitted 16 Oct 2026 50 yards away

  89% historically approved · decision due ~11 Dec

  Details of how waste is to be stored on site; pursuant to condition 30 of planning permission 10th November 2025 (25/02820/FULL)

  Awaiting decision

• 82 Margaret Street London W1W 8LH

  26/07264/ADFULL Submitted 23 Oct 2026 50 yards away

  89% historically approved · decision due ~18 Dec

  Details of the Validation Report pursuant to Condition 16 (Phase 4) of planning permission dated 10 November 2025 (RN: 25/02820/FULL).

  Awaiting decision

• 82 Margaret Street London W1W 8LH

  26/02220/ADFULL Submitted 2 Apr 2026 50 yards away

  89% historically approved · decision due ~2 Sep

  Details of facing materials / new windows and rooflights, external doors, railings, detailed study of the 'laundry' with detailed drawings of proposals and plant screens / plant noise assessment / pursuant to condition 30 19 of planning permission dated 10 November 2025 (RN: 25/02820/FULL).

  Decided Loft or dormer Windows or glazing 31 docs

• 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