Fourth Floor And Fifth Floor 7 Cavendish Square London W1G 0PE

This site has had 2 applications since 2026.

• 26/01746/LBC Awaiting decision

  Fourth Floor And Fifth Floor 7 Cavendish Square London W1G 0PE

  Installation of single set of French doors to rear elevation. (Linked with 26/01745/FULL)

  Submitted 18 Mar 2026 Heritage and listed buildings

1. 18 Mar 2026

   Received by Westminster

2. 30 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 25 May 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 66 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 full applications in a median of 91 days. More in our guide to how long planning decisions take.

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.

• Fourth Floor And Fifth Floor 7 Cavendish Square London W1G 0PE

  26/01746/LBC Submitted 18 Mar 2026 50 yards away

  90% historically approved · decision due ~25 May

  Installation of single set of French doors to rear elevation. (Linked with 26/01745/FULL)

  Awaiting decision Heritage and listed buildings Windows or glazing 2 docs

• Ground Floor 8 Cavendish Square London W1G 0PD

  26/03867/FULL Submitted 12 Jun 2026 50 yards away

  87% historically approved · decision due ~7 Aug

  New entrance door and associated canopy to the existing ground floor unit.

  Awaiting decision Full applications

• 15 - 19 Cavendish Place London W1G 0QE

  26/02380/FULL Submitted 10 Apr 2026 50 yards away

  87% historically approved · decision due ~5 Jun

  Erection of two storey mansard roof extension with associated dormer windows, plus extension on sixth floor to provide additional office (Class E) accommodation including plant space and green roof, infill of courtyards at ground and lower ground floors, extensions within southeast corner at first-fifth floor levels to provide terraces and an external staircase to rear of building, new glazing to existing windows, new shopfront with lowered cills for new active frontage at ground floor level.

  Awaiting decision Full applications Extension Loft or dormer +1 55 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

• 3 Cavendish Square London W1G 0LB

  25/08061/LBC Submitted 5 Nov 2025 50 yards away

  90% historically approved · decision due ~31 Dec

  Internal fitout works to return a CAT B space back to a CAT A space as part of the landlord's dilapidation works.

  Awaiting decision Heritage and listed buildings 9 docs

• 26/06331/FULL Awaiting decision

  31G Nottingham Place London W1U 5LP

  Installation of a condenser within acoustic enclosure and metal railing on the rear flat roof at third-floor level.

  Received 16 Sep, published by the council 23 Sep 2026 Full applications
• 26/06328/FULL Awaiting decision

  Athena Court 2 Finchley Road London NW8 6DP

  Installation of a multifunctional communication Hub including defibrillator outside Athena Court. (Linked with 26/06329/ADV)

  Received 16 Sep, published by the council 23 Sep 2026 Full applications
• 26/06340/FULL Awaiting decision

  141 Harley Street London W1G 6BQ

  Variation of Condition 1 of planning permission dated 22 December 2026 (RN: 16/05372/FULL) for: Demolition of mews buildings at 28 and 29 Devonshire Mews West and lower ground and ground floor link building at the rear of 141 Harley Street and the erection of new building to include a three storey basement to the rear of the site in connection with the use of the 141 Harley Street and the lower ground and ground floor of 143 Harley Street for Class D1 medical purposes; installation of a new passenger lift to the rear of 141 Harley Street and installation of plant. (Site includes excavation part way under the pavement of Devonshire Mews West and use swap with 126 Harley Street) namely, to allow creation of party wall openings at basement, ground and first floors; insertion of a platform lift within No. 143 from basement to first floors; partial infilling of the rear basement area; and other minor adjustments to plan form. (Linked with 26/06290/LBC)

  Received 16 Sep, published by the council 23 Sep 2026 Full applications
• 26/06341/FULL Awaiting decision

  141 Harley Street London W1G 6BQ

  Installation of new sesame lift into existing front entrance steps. (Linked with 26/06342/LBC)

  Received 16 Sep, published by the council 23 Sep 2026 Full applications
• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront with Medication Dispensing Outlet.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications