1 Cavendish Square London W1G 0LA

This site has had 6 applications since 2025: 6 approved, 0 refused.

• 26/00756/ADV Granted

  1 Cavendish Square London W1G 0LA

  Display of 1x non-illuminated surface mounted low level sign adjacent to the entrance door measuring 1.2m x 0.9m 1x halo illuminated fascia sign measuring 2.2m x 0.65m and two internally illuminated hanging signs measuring 1m x 0.8m

  Decided 29 Apr 2026 Advertising
• 25/07814/LBC Granted

  1 Cavendish Square London W1G 0LA

  Installation of fibre optic cables along the lightwell street wall in existing tray work into basement comms room.

  Decided 19 Feb 2026 Heritage and listed buildings
• 25/06203/FULL Granted

  1 Cavendish Square London W1G 0LA

  Variation of Condition 13 of planning permission dated 20th April 2023 (RN: 22/07690/FULL) for the Opening up to basement areas, lowering of floor in pavement vaults and corridors to increase the useable space, additional opening up to eastern ground floor area, forming of services voids to accommodate plant and equipment, reopening of existing skylight apertures to existing pitched roof for ventilation of services, alterations to eastern facade to accommodate a new plant deck, WC accommodation and small terrace, in -connection with the use of building as a restaurant/drinking establishment (Sui Generis) namely, to extend hours of opening. Application under S73 of the Act

  Decided 27 Oct 2025 Full applications
• 25/05570/ADLBC Granted

  1 Cavendish Square London W1G 0LA

  Details of new windows and roof lights pursuant to Condition 5(B) PART of Listed Building Consent dated 03 September 2024 (RN23/08101/LBC)

  Decided 4 Nov 2025 Conditions
• 25/04626/FULL Granted

  1 Cavendish Square London W1G 0LA

  Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).

  Decided 16 Sep 2025 Full applications

1. 4 Jul 2025

   Received by Westminster

2. 16 Sep 2025

   Decision issued: Application Permitted

3. 29 Jul 2026

   Added to PlanIndex

1 later application on the register refers to this one:

• 25/04626/FULL Granted

  1 Cavendish Square London W1G 0LA

  Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).

  Decided 16 Sep 2025 Full applications

Westminster granted permission on 16 September 2025, 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.

• 1 Cavendish Square London W1G 0LA

  25/04626/FULL Submitted 4 Jul 2025 50 yards away

  Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).

  Granted Full applications 20 docs

• 1 Cavendish Square London W1G 0LA

  25/06203/FULL Submitted 1 Sep 2025 50 yards away

  Variation of Condition 13 of planning permission dated 20th April 2023 (RN: 22/07690/FULL) for the Opening up to basement areas, lowering of floor in pavement vaults and corridors to increase the useable space, additional opening up to eastern ground floor area, forming of services voids to accommodate plant and equipment, reopening of existing skylight apertures to existing pitched roof for ventilation of services, alterations to eastern facade to accommodate a new plant deck, WC accommodation and small terrace, in -connection with the use of building as a restaurant/drinking establishment (Sui Generis) namely, to extend hours of opening. Application under S73 of the Act

  Granted Full applications 19 docs

• 1 Cavendish Square London W1G 0LA

  25/07814/LBC Submitted 28 Oct 2025 50 yards away

  Installation of fibre optic cables along the lightwell street wall in existing tray work into basement comms room.

  Granted Heritage and listed buildings 9 docs

• 1 Cavendish Square London W1G 0LA

  26/00756/ADV Submitted 9 Feb 2026 50 yards away

  Display of 1x non-illuminated surface mounted low level sign adjacent to the entrance door measuring 1.2m x 0.9m 1x halo illuminated fascia sign measuring 2.2m x 0.65m and two internally illuminated hanging signs measuring 1m x 0.8m

  Granted Advertising 12 docs

• 1 Cavendish Square London W1G 0LA

  25/05570/ADLBC Submitted 8 Aug 2025 50 yards away

  Details of new windows and roof lights pursuant to Condition 5(B) PART of Listed Building Consent dated 03 September 2024 (RN23/08101/LBC)

  Granted Conditions Loft or dormer Windows or glazing 7 docs

• Fourth Floor 2 Cavendish Square London W1G 0PU

  26/05967/LBC Submitted 1 Sep 2026 50 yards away

  90% historically approved · decision due ~3 Nov

  Installation of internal secondary glazing to the 4th-floor windows, with internal reversible, non-destructive fixings into the window reveals, and slimline units to maintain background ventilation and prevent interstitial condensation.

  Awaiting decision Heritage and listed buildings Windows or glazing

• 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
• 26/06230/LBC Awaiting decision

  10 Bedford Street London WC2E 9HE

  Internal redecoration/refurbishment to the existing Caffe Nero including redecorating throughout, replacing the tiled floor in the customer area, raising the timber floor by 180mm on the left-hand side upon entry to bring interest to the area, for the existing large, boxed window cils on right-hand side upon entry; the one on the far right will be removed to give way for more seating, with the other being adapted to allow for leg space below, and two bespoke decorative chandeliers to be hung in the customer area which will be installed with structural engineer approval.

  Received 11 Sep, published by the council 21 Sep 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