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Planning application

24 Montpelier Street London SW7 1HD

Granted Westminster 25/07341/FULL Full Planning Permission Application

Works: Extension Loft or dormer

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Construction of mansard roof extension, replacement of staircase and vault door to front lightwell.

As published by the council, reference 25/07341/FULL

Application record

Reference
25/07341/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
10 Oct 2025
Validated
10 Oct 2025
Decided
25 Feb 2026
Ward
Knightsbridge & Belgravia
Decision by
Delegated Decision
Postcode
SW7 1HD

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2025: 2 approved, 0 refused.

  • 25/07342/LBC Granted

    24 Montpelier Street London SW7 1HD

    Construction of mansard roof extension, replacement of staircase and vault door to front lightwell; internal alterations to third floor.

    Decided 25 Feb 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 10 Oct 2025

    Received by Westminster

  2. 25 Feb 2026

    Decision issued: Application Permitted

  3. 21 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Maddox Planning Ltd Agent, a planning consultancy

119 applications on PlanIndex · across 22 councils · 89% granted

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Documents

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

30 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.

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What this grant of permission means

Westminster granted permission on 25 February 2026, 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.

About full applications

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.

Nearby applications

Within 0.3 miles

  • 24 Montpelier Street London SW7 1HD

    25/07342/LBC Submitted 10 Oct 2025 50 yards away

    Construction of mansard roof extension, replacement of staircase and vault door to front lightwell; internal alterations to third floor.

    Granted Heritage and listed buildings Extension Loft or dormer 27 docs
  • 38 Montpelier Street London SW7 1HD

    26/05227/LBC Submitted 3 Aug 2026 50 yards away

    90% historically approved · decision due ~28 Sep

    Erection of rear extensions at lower ground and ground floor levels; rear elevation alterations, including matching brickwork and restrained contemporary elements; rear garden and lightwell works, including new external metal staircases and glass guarding; selected rear window and external door changes, including traditional painted timber sash windows and Crittall-style external doors; level rationalisation within the rear closet wing and half-landing areas; necessary internal partitions and sanitary accommodation layouts; repair of retained historic fabric and associated local making good; and removal of clearly non-original fittings, finishes and altered elements where required. (Linked with 26/05226/FULL)

    Awaiting decision Heritage and listed buildings Extension Windows or glazing
  • 38 Montpelier Street London SW7 1HD

    26/05226/FULL Submitted 3 Aug 2026 50 yards away

    88% historically approved · decision due ~28 Sep

    Erection of rear extensions at lower ground and ground floor levels; rear elevation alterations, including matching brickwork and restrained contemporary elements; rear garden and lightwell works, including new external metal staircases and glass guarding; selected rear window and external door changes, including traditional painted timber sash windows and Crittall-style external doors; level rationalisation within the rear closet wing and half-landing areas; necessary internal partitions and sanitary accommodation layouts; repair of retained historic fabric and associated local making good; and removal of clearly non-original fittings, finishes and altered elements where required. (Linked with 26/05227/LBC)

    Awaiting decision Full applications Extension Windows or glazing
  • 36 Montpelier Street London SW7 1HD

    26/00407/TCA Submitted 23 Jan 2026 50 yards away

    G1 2 x Olive : Reduce by height by around 30-40% (3-4m) and scale remaining crowns to shape and contain.

    Granted Trees 7 docs
  • 1 Montpelier Mews London SW7 1HB

    06/09472/FULL Submitted 27 Nov 2006 50 yards away

    Demolition of Nos. 1 and 2 Montpelier Mews. Erection of two new mews buildings comprising lower ground, ground, first and second floors in connection with their use as single family dwelling houses.

    Granted Full applications Demolition 20 docs
    Domestic
  • 12 Montpelier Mews London SW7 1HB

    13/03550/CAC Submitted 18 Apr 2013 50 yards away

    Conversion of garage into habitable room and installation of window.

    Decided Heritage and listed buildings Windows or glazing 9 docs

In Westminster

  • 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