3 Cavendish Square London W1G 0LB

This site has had 3 applications since 2025: 1 approved, 0 refused.

• 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 Decided

  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. 13 Feb 2026

   Decision issued: Application Permitted

3. 20 Jul 2026

   Added to PlanIndex

Westminster granted permission on 13 February 2026, 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.

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.

• 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.

  Decided 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

• 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

• 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

  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.

  Granted Full applications 21 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