15 - 17 Palace Street London SW1E 5HS

1. 2 Mar 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 27 April 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.

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.

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.

• 14 Buckingham Place London SW1E 6HX

  25/08189/ADFULL Submitted 10 Nov 2025 50 yards away

  Detailed drawings of the dormers and windows pursuant to Condition 4 of planning permission dated 6 February 2025 (RN 24/08828/FULL)

  Granted Full applications Loft or dormer Windows or glazing 7 docs

• 14 Buckingham Place London SW1E 6HX

  25/06236/ADFULL Submitted 2 Sep 2025 50 yards away

  Detailed drawings of dormers and windows pursuant to Condition 4 of planning permssion dated 6 February 2025 (RN 24/08828/FULL)

  Refused Full applications Loft or dormer Windows or glazing 7 docs

• Flat 8 16 Catherine Place London SW1E 6HF

  25/07745/NMA Submitted 27 Oct 2025 50 yards away

  Amendments to planning permission dated 24 January 2023 (RN:22/07667/FULL) for: Replacement of existing roof access structure with new roof structure (Flat 8). Namely, removal of one rooflight and installation of one side casement window.

  Granted Amendments Loft or dormer Roofing +1 28 docs

• The Other Palace 12 Palace Street London SW1E 5JA

  26/05718/ADV Submitted 20 Aug 2026 50 yards away

  Display of internally illuminated LED screen measuring 2.56m x 1.44m located to the inside of the ground floor area.

  Decided Advertising

• 21 Stafford Place London SW1E 6NP

  26/06268/FULL Submitted 14 Sep 2026 50 yards away

  88% historically approved · decision due ~9 Nov

  Variation of Condition 1 of planning permission dated 17 April 2026 (RN 25/08897/FULL) for the erection of a mansard roof extension; Namely, to allow the addition of seven rooflights within the flat roof.

  Decided Full applications Extension Loft or dormer

• 21 Stafford Place London SW1E 6NP

  25/08897/FULL Submitted 8 Dec 2025 50 yards away

  Erection of mansard roof extension.

  Granted Full applications Extension Loft or dormer 33 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