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 91 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 119 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

  88% 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

  88% 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

  Internal refurbishmnet to modern offices at 4th and 5th floors.

  Granted Heritage and listed buildings 14 docs

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL 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 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications