16 - 18 Montagu Place London W1H 2BQ

1. 21 Jul 2026

   Received by Westminster

2. 27 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 1 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 21 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 91 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 119 days. More in our guide to how long planning decisions take.

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

  04/09789/FULL Submitted 10 Dec 2004 50 yards away

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

  Granted Full applications Windows or glazing 8 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

• 14 Montagu Place London W1H 2ET

  26/01920/ADFULL Submitted 24 Mar 2026 50 yards away

  88% historically approved · decision due ~28 May

  Details of samples(photos acceptable) colour and specification details of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located and detailed drawings of the new windows pursuant to condition 3 and 4 of planning permission dated 22nd July 2025 (RN:24/02626/FULL)

  Awaiting decision Full applications Windows or glazing 13 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