45 New Cavendish Street London W1G 9TJ

This site has had 2 applications since 2025: 2 approved, 0 refused.

• 25/07902/LBC Granted

  45 New Cavendish Street London W1G 9TJ

  Internal alterations at ground and lower ground level including reinstatement of staircase. (Linked with 25/07901/FULL)

  Decided 4 Mar 2026 Heritage and listed buildings

1. 31 Oct 2025

   Received by Westminster

2. 4 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 4 Mar 2026

   Decision issued: Application Permitted

4. 21 Jul 2026

   Added to PlanIndex

• 25/07902/LBC Granted

  45 New Cavendish Street London W1G 9TJ

  Internal alterations at ground and lower ground level including reinstatement of staircase. (Linked with 25/07901/FULL)

  Decided 4 Mar 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 25/07902/LBC Granted

  45 New Cavendish Street London W1G 9TJ

  Internal alterations at ground and lower ground level including reinstatement of staircase. (Linked with 25/07901/FULL)

  Decided 4 Mar 2026 Heritage and listed buildings

Westminster granted permission on 4 March 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.

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.

• 45 New Cavendish Street London W1G 9TJ

  25/07902/LBC Submitted 31 Oct 2025 50 yards away

  Internal alterations at ground and lower ground level including reinstatement of staircase. (Linked with 25/07901/FULL)

  Granted Heritage and listed buildings 11 docs

• Flat 6 New Cavendish Court 39 New Cavendish Street London W1G 9TN

  22/03223/FULL Submitted 13 May 2022 50 yards away

  Amalgamation of Flats 5 and 6 (Class C3) at third floor level to form one new self contained family sized dwelling.

  Granted Full applications New dwelling 11 docs
  Domestic

• 55 Wimpole Street London W1G 8YL

  26/06560/FULL Submitted 24 Sep 2026 50 yards away

  88% historically approved · decision due ~19 Nov

  Removal of existing Luxcrete/glazed pavement-light panels and associated metal surrounds; installation of a continuous waterproofing system beneath the entrance landing; associated structural repairs; temporary lifting and reinstatement of existing stone entrance steps; and reinstatement of the mosaic entrance surface to match the existing design and appearance. (Linked to 26/06561/LBC)

  Awaiting decision Full applications Windows or glazing

• 55 Wimpole Street London W1G 8YL

  26/06561/LBC Submitted 24 Sep 2026 50 yards away

  90% historically approved · decision due ~19 Nov

  Removal of existing Luxcrete/glazed pavement-light panels and associated metal surrounds; installation of a continuous waterproofing system beneath the entrance landing; associated structural repairs; temporary lifting and reinstatement of existing stone entrance steps; and reinstatement of the mosaic entrance surface to match the existing design and appearance. (Linked to 26/06560/FULL)

  Awaiting decision Heritage and listed buildings Windows or glazing

• Flat 2 New Cavendish Mansions 48 New Cavendish Street London W1G 8TG

  26/00872/FULL Submitted 12 Feb 2026 50 yards away

  88% historically approved · decision due ~9 Apr

  Retrofit of existing windows, including insertion of slimline double-glazing windowpanes to front facade.

  Awaiting decision Full applications Windows or glazing 13 docs

• 54 Wimpole Street London W1G 8YJ

  26/01617/ADLBC Submitted 12 Mar 2026 50 yards away

  89% historically approved · decision due ~7 May

  Details pursuant to condition 5 of listed building consent dated 15th August 2025 (RN:25/02411/LBC).

  Awaiting decision Conditions 15 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