21 Trevor Place London SW7 1LB

1. 21 Aug 2025

   Received by Westminster

2. 10 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 6 Nov 2025

   Decision issued: Application Permitted

4. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 6 November 2025, 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.

• 32 Trevor Place London SW7 1LD

  26/05435/FULL Submitted 10 Aug 2026 50 yards away

  88% historically approved · decision due ~5 Oct

  Demolition of the existing rear timber-framed single-glazed conservatory, construction of a replacement flat-roof rear ground floor extension. Replacement of existing rear pitched glazed roof above the basement lightwell with a walkable flat glazed roof, and installation of full-height aluminium double doors opening directly onto the rear ground floor terrace/ flat glazed roof. Alteration and extension of rear fence. Installation of louvre screen to existing AC unit.

  Awaiting decision Full applications Extension Demolition +1
  Small domestic

• 1 Montpelier Square London SW7 1JT

  26/03332/FULL Submitted 20 May 2026 50 yards away

  88% historically approved · decision due ~15 Jul

  Variation of Condition 1 of planning permission dated 2 January 2024 (23/03312/FULL) for: Excavation of a new basement, extension at rear lower ground to first floor levels with mechanical plant and enclosure to the roof of the new extension namely, levelling of basement floorplate; relocation of kitchen extract; installation of condenser unit within acoustic enclosure to side lightwell and installation of a new roof hatch.

  Decided Full applications Extension Roofing 27 docs

• 1 Montpelier Square London SW7 1JT

  26/03327/LBC Submitted 20 May 2026 50 yards away

  90% historically approved · decision due ~15 Jul

  Excavation of new basement; installation of kitchen extract to lower ground front elevation; installation of air conditioning unit within an acoustic enclosure beneath existing staircase within front lightwell; installation of new roof hatch; internal alterations including installation of secondary glazing, replacement of cornices and removal of a fireplace place surround.

  Decided Heritage and listed buildings Roofing Windows or glazing 27 docs

• 4 Montpelier Square London SW7 1JT

  22/05234/ADFULL Submitted 1 Aug 2022 50 yards away

  Details of Code of Construction Practice pursuant to Condition 3 of planning permission dated 28th August 2021 (RN:21/02324/FULL).

  Withdrawn Full applications 5 docs

• Centre Garden Montpelier Square London SW7 1JT

  26/00485/TPO Submitted 27 Jan 2026 50 yards away

  100% historically approved · decision due ~24 Mar

  see attached survey T1 London Plane tree prune back from adjacent elm by 2m & clear building T2 Amelanchier clear light to max of 1 m T 3 Scarlet Oak lift over path T 6 Birch tree lift over path T 7 Cherry clear sign T12 N Maple clear other trees by 1.5m T 14 Cherry prune to clear magnolia by 1.5 m T 16 Lime climbing inspection T 18 London Plane Crown lift lower canopy T 22 London Plane tree clear building if necessary T 25 London Plane tree clear building if necessary T 27 Horse Chestnut Crown lift off lower trees & shrubs T 41 London Plane London Plane tree clear building if necessary T 47 Cherry Clear light & clear canopies form adjacent trees T 49 Elm Prune from adj cherries max 1.5 T1 ,22,41 may not require pruning if sufficient clearance

  Awaiting decision Trees 5 docs

• 47 Montpelier Square London SW7 1JX

  07/08403/FULL Submitted 25 Sep 2007 50 yards away

  Demolition of existing building and erection of new building comprising basement, ground and two upper floors with terrace at rear second floor level in connection with use as single family dwelling.

  Granted Full applications Demolition 16 docs
  Domestic

• 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