Flat 2 5 Montagu Square London W1H 2LA

This site has had 2 applications since 2026.

• 26/04418/FULL Decided

  Flat 2 5 Montagu Square London W1H 2LA

  Installation of secondary glazing to existing historic single glazed timber windows. Replacement of existing window with new timber double glazed unit.

  Submitted 3 Jul 2026 Full applications

1. 3 Jul 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. 11 Sep 2026

   Status changed to Decided

   Previously Pending.

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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.

• Flat 2 5 Montagu Square London W1H 2LA

  26/04418/FULL Submitted 3 Jul 2026 50 yards away

  88% historically approved · decision due ~28 Aug

  Installation of secondary glazing to existing historic single glazed timber windows. Replacement of existing window with new timber double glazed unit.

  Decided Full applications Windows or glazing

• 1 Gloucester Place Mews London W1U 8BA

  25/06633/FULL Submitted 16 Sep 2025 50 yards away

  Removal of the existing asphalt flat roof at first floor level and installation of a ventilated lead roof with other associated works.

  Granted Full applications 12 docs

• 1 Montagu Square London W1H 2LA

  25/06616/LBC Submitted 16 Sep 2025 50 yards away

  Installation of a replacement Portland stone step to match existing. Installation of reinforcing bars to horizontal mortar beds at basement and ground floor levels.

  Granted Heritage and listed buildings 11 docs

• 27 Gloucester Place London W1U 8HU

  22/03799/LBC Submitted 10 Jun 2022 50 yards away

  Internal alterations including opening through party wall at ground floor level. (Site includes 29 Gloucester Place)

  Granted Heritage and listed buildings 13 docs

• 8 Montagu Square London W1H 2LB

  26/01123/LBC Submitted 23 Feb 2026 50 yards away

  90% historically approved · decision due ~20 May

  Refurbishment works to the main roof including new roof slates, tapered lead valley gutters and new lead roof covering to existing dormer and refurbishment of lead box gutter on the rear elevation.

  Awaiting decision Heritage and listed buildings Loft or dormer Roofing 22 docs

• 29 Gloucester Place London W1U 8HT

  26/02601/LBC Submitted 20 Apr 2026 50 yards away

  90% historically approved · decision due ~15 Jun

  Installation of lightweight metal stud partitions finished with plasterboard and a skim coat to 2nd , 3rd and 4th floor offices.

  Awaiting decision Heritage and listed buildings 12 docs

• 26/06288/LBC Decided

  Barness Court 6 - 8 Westbourne Terrace London W2 3UW

  Installation of a gas pipework to south elevation and wall. (Linked with 26/06287/FULL)

  Received 14 Sep, published by the council 21 Sep 2026 Heritage and listed buildings
• 26/07529/LBC Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water supply pipe on rear courtyard elevation. (Linked with 26/07528/FULL)

  Received 5 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07509/LBC 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 26/07508/FULL)

  Received 4 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07473/LBC Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07472/FULL)

  Received 3 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07471/LBC Awaiting decision

  12 Queen Anne's Gate London SW1H 9AA

  Excavation of single-storey basement, internal reconfiguration and installation of modern services. (Linked with 26/07470/FULL)

  Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings