23 Nassau Street London W1W 7AG

1. 31 Jul 2025

   Received by Westminster

2. 18 Sep 2025

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 18 September 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.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• 26 Nassau Street London W1W 7AQ

  07/02379/AD7 Submitted 14 Mar 2007 50 yards away

  Display of estate agent board on a baton affixed to front railings.

  Refused Advertising 4 docs

• 6 Bourlet Close London W1W 7BN

  26/05789/FULL Submitted 24 Aug 2026 50 yards away

  87% historically approved · decision due ~9 Nov

  Replacement of existing lanterns with walk on glass roof lights, new decking to existing roof terrace, changes to the existing mansard to allow the formation of new bifolding doors, changes to rear fenestration and consolitaion and associated works.

  Awaiting decision Full applications Loft or dormer Windows or glazing

• 16 Mortimer Street London W1T 3JL

  25/06650/ADFULL Submitted 17 Sep 2025 50 yards away

  Details of how waste is to be stored on site and how materials for recycling will be stored separately and details of a Servicing Management Plan pursuant to Conditions 6 and 10 of planning permission dated 21st December 2023 (RN: 23/07589/FULL)

  Granted Full applications 13 docs

• 20 - 22 Mortimer Street London W1T 3JW

  26/02992/ADFULL Submitted 7 May 2026 50 yards away

  89% historically approved · decision due ~2 Jul

  Details of post commissioning noise assessment report pursuant to Condition 9 of planning permission dated 21 August 2024 (RN 24/04062/FULL)

  Decided 5 docs

• 20 - 22 Mortimer Street London W1T 3JW

  25/06818/ADFULL Submitted 23 Sep 2025 50 yards away

  Detailed drawings (1:5 and 1:20) of the proposed plant enclosure pursuant to Condition 8 of planning permission dated 21 August 2024 (RN24/04062/FULL)

  Granted Full applications 13 docs

• 20 - 22 Mortimer Street London W1T 3JW

  25/09120/ADFULL Submitted 17 Dec 2025 50 yards away

  Detailed drawings of new shopfront, windows and doors showing openability pursuant to condition 4 of planning permission dated 3rd September 2024 (RN:24/04249/FULL)

  Granted Full applications Windows or glazing 4 docs

• 26/04878/LBC Decided

  34 Grosvenor Street London W1K 4QU

  Internal works to facilitate the subdivision of 34 Grosvenor Street and 3 Three Kings Yard

  Received 21 Jul, published by the council 1 Aug 2026 Heritage and listed buildings
• 26/06299/LBC Awaiting decision

  Apartment 33 24 Park Crescent London W1B 1AA

  Removal of non structural partitions, replacement of non original doors with full height concealed doors.

  Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/06305/LBC Awaiting decision

  33A Dean Street London W1D 4PP

  Waterproofing the basement level.

  Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/04141/LBC Decided

  80E Randolph Avenue London W9 1BG

  Replacement of sashes in two front windows at 2nd floor level and one rear window with slimline double glazed timber sashes. (Linked with 26/04142/FULL)

  Received 23 Jun, published by the council 21 Jul 2026 Heritage and listed buildings
• 26/06288/LBC Awaiting decision

  Barness Court 6 - 8 Westbourne Terrace London W2 3UW

  Installation of a new riser as per GW10 design comprising a single riser with 7 entries and 9 Taylor valves to be installed. (Linked with 26/06287/FULL)

  Received 14 Sep, published by the council 21 Sep 2026 Heritage and listed buildings