17 Chapel Street London SW1X 7BY

This site has had 9 applications since 2025: 0 approved, 1 refused.

• 26/04885/LBC Awaiting decision

  17 Chapel Street London SW1X 7BY

  Erection of an additional storey at main roof level and a rear extension at lower ground floor level with terrace over and associated internal alterations (Linked with 26/04162/NMA)

  Submitted 21 Jul 2026 Heritage and listed buildings
• 26/04162/NMA Awaiting decision

  17 Chapel Street London SW1X 7BY

  Amendments to planning permission dated 24 July 2025 (25/01676/FULL) for: Erection of an additional storey at main roof level and a rear extension at lower ground floor level with terrace over namely; to allow alterations to floor plans; reduction in number of roof lights in rear extension, from two to one; maintenance access hatch in main roof (Linked with 26/04885/LBC)

  Submitted 23 Jun 2026 Amendments
• 26/03892/LBC Awaiting decision

  17 Chapel Street London SW1X 7BY

  Erection of timber glazed orangery extension to existing first floor rear terrace and associated internal alterations. (Linked with 26/03891/FULL)

  Submitted 15 Jun 2026 Heritage and listed buildings
• 26/03891/FULL Awaiting decision

  17 Chapel Street London SW1X 7BY

  Erection of timber glazed orangery extension to existing first floor rear terrace. (Linked with 26/03892/LBC)

  Submitted 15 Jun 2026 Full applications
• 26/03816/ADFULL Decided

  17 Chapel Street London SW1X 7BY

  Details of Arboricultural method statement pursuant to condition 6 of planning permission dated 24 July 2025 (RN: 25/01676/FULL).

  Submitted 10 Jun 2026
• 26/01389/ADFULL Awaiting decision

  17 Chapel Street London SW1X 7BY

  Details of windows and doors pursuant to Condition 4 of planning permission dated 24 July 2025 (RN: 25/01676/FULL). [Linked to 26/01476/ADLBC]

  Submitted 4 Mar 2026 Full applications
• 26/01476/ADLBC Awaiting decision

  17 Chapel Street London SW1X 7BY

  Details of new staircase to fourth floor pursuant to Condition 3 of listed building consent dated 24 July 2025 (RN: 25/01677/LBC). [Linked to 26/01389/ADFULL]

  Submitted 4 Mar 2026 Conditions
• 25/07612/ADFULL Refused

  17 Chapel Street London SW1X 7BY

  Detailed drawings of a) All new external windows and doors and b) The timber screen/trellis to the roof terrace on the rear extension and a tree protection method statement pursuant to Conditions 4 and 6 of planning permission dated 24 July 2025 (RN: 25/01676/FULL).

  Decided 10 Feb 2026 Full applications

1. 19 Feb 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 16 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.

• 17 Chapel Street London SW1X 7BY

  26/03816/ADFULL Submitted 10 Jun 2026 50 yards away

  89% historically approved · decision due ~5 Aug

  Details of Arboricultural method statement pursuant to condition 6 of planning permission dated 24 July 2025 (RN: 25/01676/FULL).

  Decided

• 17 Chapel Street London SW1X 7BY

  26/04885/LBC Submitted 21 Jul 2026 50 yards away

  90% historically approved · decision due ~15 Sep

  Erection of an additional storey at main roof level and a rear extension at lower ground floor level with terrace over and associated internal alterations (Linked with 26/04162/NMA)

  Awaiting decision Heritage and listed buildings Extension

• 10 Chapel Street London SW1X 7BY

  26/05944/ADFULL Submitted 1 Sep 2026 50 yards away

  Details of a completed Appendix A checklist from the Code of Construction Practice pursuant to Condition 3 of planning permission dated 10 July 2025 (RN: 25/01535/FULL).

  Granted

• 10 Chapel Street London SW1X 7BY

  26/04209/ADFULL Submitted 25 Jun 2026 50 yards away

  Detailed drawings of window at rear third floor level above the closet wing extension to match the windows in the rear closet wing extension in terms of size and detailed design and the two roof skylights must be conservation area styled rooflights, reduced in size, centrally positioned and closer to the roof ridge; detailed drawings of the new windows within the closet wing extension pursuant to Conditions 6 (parts a and b) and 7 of planning permission dated 10 July 2025 (RN:25/01535/FULL).

  Decided Extension Loft or dormer +1

• 17 Chapel Street London SW1X 7BY

  26/01389/ADFULL Submitted 4 Mar 2026 50 yards away

  88% historically approved · decision due ~29 Apr

  Details of windows and doors pursuant to Condition 4 of planning permission dated 24 July 2025 (RN: 25/01676/FULL). [Linked to 26/01476/ADLBC]

  Awaiting decision Full applications Windows or glazing 10 docs

• 17 Chapel Street London SW1X 7BY

  26/01476/ADLBC Submitted 4 Mar 2026 50 yards away

  89% historically approved · decision due ~29 Apr

  Details of new staircase to fourth floor pursuant to Condition 3 of listed building consent dated 24 July 2025 (RN: 25/01677/LBC). [Linked to 26/01389/ADFULL]

  Awaiting decision Conditions 10 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