Basement And Ground Floor Maisonette 45 - 47 Grosvenor Square London W1K 2HS

1. 29 Aug 2025

   Received by Westminster

2. 20 Oct 2025

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 20 October 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.

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.

• Flat 11 45 - 47 Grosvenor Square London W1K 2HS

  25/06762/FULL Submitted 19 Sep 2025 50 yards away

  88% historically approved · decision due ~26 Dec

  Installation of one air conditioning unit located in existing lightwell 2, within acoustic enclosure.

  Awaiting decision Full applications 25 docs

• Communications Station 39 - 44 Grosvenor Square London W1K 2HP

  25/06638/TELCOM Submitted 17 Sep 2025 50 yards away

  Removal of the existing 3no. antennas and installation of replacement 3no. antennas two of which located on new freestanding frames and ancillary development thereto including 1.1m freestanding handrail.

  Granted Telecoms 14 docs

• Grosvenor Square London

  23/03644/TCA Submitted 1 Jun 2023 50 yards away

  1 x London plane (T531): Remove one 5 m limb of over 100mm diameter infected with Massaria at approx. 10 m height, west side.

  Granted Trees 9 docs

• Grosvenor Square Gardens Grosvenor Square London W1K 6LD

  26/03495/TDD Submitted 28 May 2026 50 yards away

  100% historically approved · decision due ~23 Jul

  London Planes: T531 - 5 DAY NOTICE - Photo shows dead Massaria stub, removal required. (See massaria climbing inspection report) T508, T545, T509, T539 & T557 - 5 DAY NOTICE - Photo shows early stage Massaria on a large limb, removal required. (See massaria climbing inspection report)

  Awaiting decision Trees 19 docs

• 49 Grosvenor Square London W1K 3EP

  26/00347/FULL Submitted 21 Jan 2026 50 yards away

  Replacement of external entrance steps.

  Granted Full applications 15 docs

• 10 Carlos Place London W1K 3AT

  26/04607/FULL Submitted 10 Jul 2026 50 yards away

  88% historically approved · decision due ~4 Sep

  Installation of a new front door at No.10 Carlos Place.

  Decided Full applications

• 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