Flat 2 5 Montagu Square London W1H 2LA

This site has had 2 applications since 2026.

• 26/04419/LBC 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 Heritage and listed buildings

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.

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 2 5 Montagu Square London W1H 2LA

  26/04419/LBC Submitted 3 Jul 2026 50 yards away

  90% 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 Heritage and listed buildings 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

• 26/07528/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