20F Warwick Square London SW1V 2AB

This site has had 2 applications since 2026.

• 26/00235/FULL Awaiting decision

  20F Warwick Square London SW1V 2AB

  External alterations, including replacement of doors, windows and roof lantern to rear with slimline double-glazed aluminium, rebuilding of rear extension roof in standing-seam aluminium-zinc sheeting, replacement sash windows to front elevation with slimline double-glazed timber sashes, and resurfacing of the rear terrace and front lightwell floors.

  Submitted 15 Jan 2026 Full applications

1. 15 Jan 2026

   Received by Westminster

2. 20 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 12 March 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 heritage and listed building applications in a median of 119 days. More in our guide to how long planning decisions take.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• 20F Warwick Square London SW1V 2AB

  26/00235/FULL Submitted 15 Jan 2026 50 yards away

  88% historically approved · decision due ~12 Mar

  External alterations, including replacement of doors, windows and roof lantern to rear with slimline double-glazed aluminium, rebuilding of rear extension roof in standing-seam aluminium-zinc sheeting, replacement sash windows to front elevation with slimline double-glazed timber sashes, and resurfacing of the rear terrace and front lightwell floors.

  Awaiting decision Full applications Extension Windows or glazing 34 docs

• 19D Warwick Square London SW1V 2AB

  25/07697/FULL Submitted 24 Oct 2025 50 yards away

  Replacement of existing three french doors including internal general refurbishment; and other associated works. Linked with 25/07698/LBC

  Granted Full applications Windows or glazing 20 docs

• 19D Warwick Square London SW1V 2AB

  25/07698/LBC Submitted 24 Oct 2025 50 yards away

  Replacement of existing three french doors including internal general refurbishment; and other associated works. Linked with 25/07697/FULL

  Granted Heritage and listed buildings Windows or glazing 16 docs

• 1 West Mews London SW1V 2DJ

  25/06111/FULL Submitted 27 Aug 2025 50 yards away

  Replacement timber sash and casement windows and replacement of timber door set.

  Refused Full applications Windows or glazing 25 docs

• 1 West Mews London SW1V 2DJ

  25/07672/FULL Submitted 23 Oct 2025 50 yards away

  Replacement timber sash and casement windows, replacement timber door set with double-glazed units.

  Granted Full applications Windows or glazing 26 docs

• 7 Clarendon Street London SW1V 2EN

  25/06079/FULL Submitted 26 Aug 2025 50 yards away

  Replacement of four front and rear sash windows at ground and basement floors with double-glazed replacements.

  Granted Full applications Windows or glazing 30 docs

• 26/07529/LBC Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water supply pipe on rear courtyard elevation. (Linked with 26/07528/FULL)

  Received 5 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07509/LBC 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 26/07508/FULL)

  Received 4 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07473/LBC Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07472/FULL)

  Received 3 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07471/LBC Awaiting decision

  12 Queen Anne's Gate London SW1H 9AA

  Excavation of single-storey basement, internal reconfiguration and installation of modern services. (Linked with 26/07470/FULL)

  Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07461/LBC Awaiting decision

  1 Savile Row London W1S 3JR

  Minor internal works comprising redecoration and upgrades to lighting, flooring and bathroom and kitchen facilities, together with external works including new lighting and signage.

  Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings