Flat 1 40 Montagu Square London W1H 2LL

1. 17 Dec 2025

   Received by Westminster

2. 16 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 31 Mar 2026

   Decision issued: Application Permitted

4. 20 Jul 2026

   Added to PlanIndex

Westminster granted permission on 31 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.

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.

• 16 Bryanston Mews East London W1H 2DB

  26/05412/FULL Submitted 10 Aug 2026 50 yards away

  87% historically approved · decision due ~5 Oct

  Installation of an air source heat pump and air conditioning condenser unit within acoustic enclosures on the flat roof area at rear first floor level.

  Awaiting decision Full applications

• 16 Bryanston Mews East London W1H 2DB

  26/05413/FULL Submitted 10 Aug 2026 50 yards away

  87% historically approved · decision due ~5 Oct

  Installation of an air source heat pump within an acoustic enclosure on the flat roof at rear first floor level.

  Awaiting decision Full applications

• Basement And Ground Floor 38 Montagu Square London W1H 2LL

  26/00837/FULL Submitted 11 Feb 2026 50 yards away

  87% historically approved · decision due ~8 Apr

  Variation of condition 4(b) of planning permission dated 28 December 2023 (RN 23/07346/FULL) for the demolition of existing roof and erection of a mansard roof extension at first floor level and alterations to the front and rear of the portion of the building fronting onto Bryanston Mews East. Subdivision and reconfiguration of existing ground and lower ground floor levels of the building and together with the new first floor extension to the mews portion of the building, create two self-contained residential units (Class C3) and associated external alterations. Lowering of front pavement vault [Site includes 22 Bryanston Mews East] (Linked with 23/07347/LBC) NAMELY, to amend the wording of condition 4 (b) to remove reference of the approved rooflights are to be conservation rooflights and low profile horizontal rooflights.

  Awaiting decision Full applications Extension Loft or dormer +1 4 docs

• Basement And Ground Floor 38 Montagu Square London W1H 2LL

  25/09024/ADFULL Submitted 12 Dec 2025 50 yards away

  Details of the new rooflights, demonstrating that these are conservation rooflights pursuant to condition 4 (B) of listed building dated 28th December 2023 (RN: 23/07347/LBC)

  Refused Full applications Loft or dormer 5 docs

• Basement And Ground Floor 38 Montagu Square London W1H 2LL

  26/01422/LBC Submitted 10 Feb 2026 50 yards away

  90% historically approved · decision due ~7 Apr

  Variation of condition 4(b) of listed building consent dated 28 December 2023 (RN 23/07347/LBC) for the demolition of existing roof and erection of a mansard roof extension at first floor level and alterations to the front and rear of the portion of the building fronting onto Bryanston Mews East. Subdivision and reconfiguration of existing ground and lower ground floor levels of the building and together with the new first floor extension to the mews portion of the building, create two self-contained residential units (Class C3) and associated external alterations. Lowering of front pavement vault [Site includes 22 Bryanston Mews East] (Linked with 23/07346/FULL) NAMELY, to replace the wording of "conservation rooflights" with "low profile horizontal rooflights". (Linked to 26/00837/FULL)

  Awaiting decision Heritage and listed buildings Extension Loft or dormer +1 6 docs

• Flat 3 35 Montagu Square London W1H 2LJ

  23/04938/LBC Submitted 18 Jul 2023 50 yards away

  Installation of a stairlift within Flat 3.

  Granted Heritage and listed buildings 13 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
• 26/04141/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
• 26/06270/LBC Awaiting decision

  Maisonette Basement And Ground Floor 101 Hereford Road London W2 5BB

  Amalgamation of existing lower ground and ground floor maisonette with the first floor flat to create a single dwelling and associated internal works including creation of a staircase. (Linked with 26/06269/FULL)

  Received 14 Sep, published by the council 21 Sep 2026 Heritage and listed buildings
• 26/06230/LBC Awaiting decision

  10 Bedford Street London WC2E 9HE

  Internal redecoration/refurbishment to the existing Caffe Nero including redecorating throughout, replacing the tiled floor in the customer area, raising the timber floor by 180mm on the left-hand side upon entry to bring interest to the area, for the existing large, boxed window cils on right-hand side upon entry; the one on the far right will be removed to give way for more seating, with the other being adapted to allow for leg space below, and two bespoke decorative chandeliers to be hung in the customer area which will be installed with structural engineer approval.

  Received 11 Sep, published by the council 21 Sep 2026 Heritage and listed buildings