3 Cavendish Square London W1G 0LB

This site has had 3 applications since 2025.

• 26/05885/AD7 Decided

  3 Cavendish Square London W1G 0LB

  Renewal for a temporary period of six months for the display of a non-illuminated 'to let' board attached to the railings in front of the building at street level measuring 0.6m x 0.45m.

  Submitted 27 Aug 2026
• 26/05556/LBC Awaiting decision

  3 Cavendish Square London W1G 0LB

  Internal fit out of office space on the fourth and fifth floor level.

  Submitted 14 Aug 2026 Heritage and listed buildings

1. 5 Nov 2025

   Received by Westminster

2. 20 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 31 December 2025, 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 65 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 94 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.

• Third Floor 3 Cavendish Square London W1G 0LB

  25/05783/LBC Submitted 15 Aug 2025 50 yards away

  Fit out works to the third floor

  Granted Heritage and listed buildings 22 docs

• 3 Cavendish Square London W1G 0LB

  26/05556/LBC Submitted 14 Aug 2026 50 yards away

  90% historically approved · decision due ~9 Oct

  Internal fit out of office space on the fourth and fifth floor level.

  Awaiting decision Heritage and listed buildings

• 3 Cavendish Square London W1G 0LB

  26/05885/AD7 Submitted 27 Aug 2026 50 yards away

  89% historically approved · decision due ~22 Oct

  Renewal for a temporary period of six months for the display of a non-illuminated 'to let' board attached to the railings in front of the building at street level measuring 0.6m x 0.45m.

  Decided 4 docs

• Underground Car Park Cavendish Square London W1G 0PG

  26/05731/ADFULL Submitted 21 Aug 2026 50 yards away

  89% historically approved · decision due ~16 Oct

  Details of Site Environmental Management Plan pursuant to condition 3 of planning permission dated 24 May 2022 (RN: 19/08460/FULL).

  Awaiting decision

• Underground Car Park Cavendish Square London W1G 0PG

  26/05469/NMA Submitted 12 Aug 2026 50 yards away

  93% historically approved · decision due ~13 Oct

  Amendments to planning permission dated 24th May 2022 (RN:19/08460/FULL) for Demolition and erection of above ground structures in conjunction with the use of an underground car park (Sui Generis) as a flexible mixed use commercial development comprising uses within the following use classes A1-A5, B1,B2, B8, C1, C2, D1, and D2 along with the excavation of a 4th basement level, new entrances and associated landscaping and highways works to provide up to 25,953 sqm (GIA) of floorspace. Namely, a series of updated drawings relating to the southern entrance, gardeners pavilion, northeast pavilion, and the extent of pavement lights and grilles.

  Decided Amendments Demolition

• 2 Cavendish Square London W1G 0PA

  25/08049/FULL Submitted 5 Nov 2025 50 yards away

  87% historically approved · decision due ~31 Dec

  Removal of existing plant equipment, Installation of new air source heat pump, two new air conditioning units and relocation of four existing air conditioning units within existing plant enclosure at roof level. Associated alterations to lift atrium roof.

  Awaiting decision Full applications 15 docs

• 26/04878/LBC Decided

  34 Grosvenor Street London W1K 4QU

  Internal works to facilitate the subdivision of 34 Grosvenor Street and 3 Three Kings Yard

  Received 21 Jul, published by the council 1 Aug 2026 Heritage and listed buildings
• 26/04141/LBC Decided

  80E Randolph Avenue London W9 1BG

  Replacement of sashes in two front windows at 2nd floor level and one rear window with slimline double glazed timber sashes. (Linked with 26/04142/FULL)

  Received 23 Jun, published by the council 21 Jul 2026 Heritage and listed buildings
• 26/06250/LBC Awaiting decision

  53 Wimpole Street London W1G 8YH

  Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06249/FULL)

  Received 11 Sep, published by the council 18 Sep 2026 Heritage and listed buildings
• 26/06203/LBC Awaiting decision

  106 Blandford Street London W1U 8AG

  Installation of two roof-mounted anchor posts. (Linked to 26/06202/FULL)

  Received 10 Sep, published by the council 17 Sep 2026 Heritage and listed buildings
• 26/06187/LBC Awaiting decision

  4 Shepherd Market London W1J 7QB

  Installation of wall mounted highway street light on to the facade of 4 Shepherd Market.

  Received 10 Sep, published by the council 17 Sep 2026 Heritage and listed buildings