9 Cavendish Square London W1G 9DF

This site has had 28 applications since 2003: 24 approved, 2 refused.

• 26/06413/FULL Awaiting decision

  9 Cavendish Square London W1G 9DF

  Installation of louvre grille in place of existing above-door glass panels on the lower ground floor.

  Submitted 18 Sep 2026 Full applications
• 26/03309/FULL Awaiting decision

  9 Cavendish Square London W1G 9DF

  Installation of CCTV cameras at Ground Floor; and louvres in place of existing windows at Lower Ground Floor (above existing doorset).

  Submitted 19 May 2026 Full applications
• 25/05090/FULL Granted

  9 Cavendish Square London W1G 9DF

  Installation of a non-mechanical louvre at lower ground floor level on the Chandos Street elevation.

  Decided 19 Sep 2025 Full applications
• 24/00959/ADFULL Granted

  9 Cavendish Square London W1G 9DF

  Detailed drawings and a bio-diversity management plan in relation to the green wall to include construction method, layout, species and maintenance regime pursuant to Condition 7 of planning permission dated 8th November 2022 (RN:22/06159/FULL)

  Decided 22 Mar 2024 Full applications
• 08/02350/FULL Granted

  9 Cavendish Square London W1G 9DF

  Installation of additional security (CCTV, door access systems) at ground and basement level on the Chandos Street and Cavendish Square elevations. Installation of two satellite dishes and one aerial at roof level and two air conditioning units within an existing rooftop enclosure.

  Decided 16 Jul 2008 Full applications
• 08/00623/ADFULL Granted

  9 Cavendish Square London W1G 9DF

  Details of mortar finish and lightwell finishes pursuant to Conditions 10 and 12(i) of planning permission dated 16 September 2004 (RN: 04/02391).

  Decided 5 Feb 2008 Full applications
• 07/05669/FULL Granted

  9 Cavendish Square London W1G 9DF

  Installation of eight floodlights at ground floor level to floodlight the Cavendish Square and Chandos Street elevations.

  Decided 5 Sep 2007 Full applications
• 07/03941/ADFULL Granted

  9 Cavendish Square London W1G 9DF

  Details of external metalwork including railings pursuant to Condition 11 (iii) of planning permission dated 16 September 2004 (RN: 04/02391).

  Decided 31 Jul 2007 Full applications
• 07/01852/ADFULL Granted

  9 Cavendish Square London W1G 9DF

  Details of an alternative safety arrangement to the parapet at fourth floor level pursuant to Condition 22 of planning permission dated 16 September 2004 (RN: 04/02391).

  Decided 17 Jul 2007 Full applications
• 07/00645/ADFULL Granted

  9 Cavendish Square London W1G 9DF

  Details of windows, external doors and dormer windows pursuant to Conditions 11(i), 11(ii) and 11(iii) of planning permission dated 16 September 2004 (RN: 04/02391).

  Decided 15 Mar 2007 Full applications

1. 30 Nov 2005

   Received by Westminster

2. 21 Mar 2006

   Decision issued: Application Permitted

3. 30 Aug 2026

   Added to PlanIndex

Westminster granted permission on 21 March 2006, 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.

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.

• 9 Cavendish Square London W1G 9DF

  06/04103/ADFULL Submitted 26 May 2006 50 yards away

  Detailed drawings of windows and dormer windows pursuant to Conditions 11(i) and (v) of planning permission dated 16 September 2004 (RN 04/02391).

  Refused Full applications Loft or dormer Windows or glazing 7 docs

• 9 Cavendish Square London W1G 9DF

  06/03701/ADFULL Submitted 12 May 2006 50 yards away

  Details of facing materials pursuant to Condition 9 of planning permission dated 16 September 2004 (RN 04/02391).

  Granted Full applications 3 docs

• 9 Cavendish Square London W1G 9DF

  06/02932/ADFULL Submitted 18 Apr 2006 50 yards away

  Details of stonework and other mouldings pursuant to Condition 11(iv) of planning permission dated 16 September 2004 (RN 04/02391).

  Granted Full applications 8 docs

• 9 Cavendish Square London W1G 9DF

  07/05669/FULL Submitted 28 Jun 2007 50 yards away

  Installation of eight floodlights at ground floor level to floodlight the Cavendish Square and Chandos Street elevations.

  Granted Full applications 10 docs

• 9 Cavendish Square London W1G 9DF

  07/03941/ADFULL Submitted 3 May 2007 50 yards away

  Details of external metalwork including railings pursuant to Condition 11 (iii) of planning permission dated 16 September 2004 (RN: 04/02391).

  Granted Full applications 4 docs

• 9 Cavendish Square London W1G 9DF

  07/01852/ADFULL Submitted 27 Feb 2007 50 yards away

  Details of an alternative safety arrangement to the parapet at fourth floor level pursuant to Condition 22 of planning permission dated 16 September 2004 (RN: 04/02391).

  Granted Full applications 7 docs

• 26/07315/FULL Awaiting decision

  30 Inverness Terrace London W2 3JA

  Relocation of air conditioning units throughout to the lower ground floor lightwells within aluminium enclosure; replacement of all pipes with cast iron pipes; alteration to balconies including replacement of UPVC door with original door arrangement and replacement railing; reopening of previously infilled windows; replacement marble tiles at hallway of No.32 with Victorian floor tiles; replacement of all doors facing the communal staircase with the correct period style doors; removal of red clay tile leanto roof at first floor rear and the roof made good; removal of link bridges to the rear of the second floor and the rear of the third floor; and reopening of previously infilled windows to the stairs lobby at ground, first and second floor to No.30. (Linked with 26/07316/LBC)

  Received 26 Oct, published by the council 27 Oct 2026 Full applications
• 26/05708/FULL Decided

  Flat 23 Imperial Court 55 - 56 Prince Albert Road London NW8 7PT

  Replacement of existing windows and louvres.

  Received 20 Aug, published by the council 18 Sep 2026 Full applications
• 26/07277/FULL Awaiting decision

  Apartment 1 109 Charing Cross Road London WC2H 0DT

  Replacement Street Entrance Doors to St Martins Lofts, 109 Charing Cross Road including a new level slab and subtle lighting.

  Received 23 Oct, published by the council 28 Oct 2026 Full applications
• 26/05984/FULL Decided

  41 Sutherland Street London SW1V 4JX

  Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

  Received 2 Sep, published by the council 11 Sep 2026 Full applications
• 26/07229/FULL Awaiting decision

  5 D'arblay Street London W1F 8DL

  Alterations to the existing fixed windows to form two openable sash windows. (Linked with 26/07230/ADV)

  Received 22 Oct, published by the council 26 Oct 2026 Full applications