33 Montagu Square London W1H 2LJ

This site has had 4 applications since 2004: 3 approved, 0 refused.

• 06/04851/LBC Granted

  33 Montagu Square London W1H 2LJ

  Refurbishment of a two storey maisonette including mechanical and electrical services and new access stair (second and third floor).

  Decided 14 Aug 2006 Heritage and listed buildings
• 06/04850/FULL Decided

  33 Montagu Square London W1H 2LJ

  Internal alterations at third and fourth floor level together with new access stair.

  Decided 4 Jul 2006 Full applications
• 04/09790/LBC Granted

  33 Montagu Square London W1H 2LJ

  Alterations to windows, removal and replacement of railings, removal of awning on terrace and replacement of internal partitions.

  Decided 3 Feb 2005 Heritage and listed buildings

1. 10 Dec 2004

   Received by Westminster

2. 3 Feb 2005

   Decision issued: Application Permitted

3. 29 Jul 2026

   Added to PlanIndex

Westminster granted permission on 3 February 2005, 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.

• 33 Montagu Square London W1H 2LJ

  04/09790/LBC Submitted 10 Dec 2004 50 yards away

  Alterations to windows, removal and replacement of railings, removal of awning on terrace and replacement of internal partitions.

  Granted Heritage and listed buildings Windows or glazing 2 docs

• 33 Montagu Square London W1H 2LJ

  06/04851/LBC Submitted 20 Jun 2006 50 yards away

  Refurbishment of a two storey maisonette including mechanical and electrical services and new access stair (second and third floor).

  Granted Heritage and listed buildings 7 docs

• 33 Montagu Square London W1H 2LJ

  06/04850/FULL Submitted 20 Jun 2006 50 yards away

  Internal alterations at third and fourth floor level together with new access stair.

  Decided Full applications 7 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

• 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

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

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

  88% 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

• 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