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Planning application

1 Montpelier Square London SW7 1JT

Decided Westminster 26/03327/LBC Heritage and listed buildings

Works: Roofing Windows or glazing

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

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.

As published by the council, reference 26/03327/LBC

Application record

Reference
26/03327/LBC
Category
Heritage and listed buildings
Status
Decided
Received
20 May 2026
Validated
20 May 2026
Ward
Knightsbridge & Belgravia
Postcode
SW7 1JT

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2026.

  • 26/03332/FULL Decided

    1 Montpelier Square London SW7 1JT

    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.

    Submitted 20 May 2026 Full applications

Timeline

Dates from the published record

  1. 20 May 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. 28 Oct 2026

    Status changed to Decided

    Previously Pending.

Documents

Plans, drawings, consultee responses and the officer's report

27 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

After the decision

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.

About heritage and listed building applications

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.

Nearby applications

Within 0.3 miles

  • 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
  • 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
  • 5 Montpelier Square London SW7 1JT

    26/01905/FULL Submitted 24 Mar 2026 50 yards away

    88% historically approved · decision due ~11 Jun

    Retention of existing rear extension and alterations, with the layout of the lower ground, ground and fourth floor that are departures from the approved planning permission dated 12th October 2006 (RN: 06/01827/FULL); and retention of rear roof terrace and associated balustrade. [Linked with 26/01906/LBC]

    Awaiting decision Full applications Extension 28 docs
  • 5 Montpelier Square London SW7 1JT

    26/01906/LBC Submitted 24 Mar 2026 50 yards away

    90% historically approved · decision due ~11 Jun

    Retention of existing rear extension and alterations, with the layout of the lower ground, ground and fourth floor that are departures from the approved listed building consent dated 12th October 2006 (RN: 06/01828/LBC); and retention of rear roof terrace and associated balustrade. [Linked with 26/01905/FULL]

    Awaiting decision Heritage and listed buildings Extension 25 docs
  • 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

In Westminster

  • 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