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Planning application

31 Maunsel Street London SW1P 2QN

Granted Westminster 26/00345/FULL Full Planning Permission Application

Works: Extension Loft or dormer Small domestic

Read from the description, not a valuation. How we read the register

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

Proposal

Erection of single-storey infill extension at rear ground-floor level with rooflight above.

As published by the council, reference 26/00345/FULL

Application record

Reference
26/00345/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
21 Jan 2026
Validated
13 Mar 2026
Decided
25 Jun 2026
Ward
Vincent Square
Decision by
Delegated Decision
Postcode
SW1P 2QN

Site history

Applications at this address on the Westminster register

This site has had 3 applications since 2022: 2 approved, 0 refused.

  • 26/01674/FULL Awaiting decision

    31 Maunsel Street London SW1P 2QN

    Installation of air conditioning unit to the rear elevation at first floor level.

    Submitted 16 Mar 2026 Full applications
  • 22/05201/CLOPUD Granted

    31 Maunsel Street London SW1P 2QN

    Replacement of the existing single glazed ground floor casement window with a double glazed traditional sash unit to match No. 32 Maunsel Street.

    Decided 11 Aug 2022 Lawful development

Timeline

Dates from the published record

  1. 21 Jan 2026

    Received by Westminster

  2. 13 Mar 2026

    Validated

    Checked as complete and ready for consideration.

  3. 25 Jun 2026

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Advantage Basements Agent, registered in Kingston Upon Thames

Active · incorporated 2014 · Kingston Upon Thames

3 applications on PlanIndex · across 2 councils

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

29 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 June 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

  • 31 Maunsel Street London SW1P 2QN

    26/01674/FULL Submitted 16 Mar 2026 50 yards away

    88% historically approved · decision due ~1 Jul

    Installation of air conditioning unit to the rear elevation at first floor level.

    Awaiting decision Full applications 23 docs

  • 31 Maunsel Street London SW1P 2QN

    22/05201/CLOPUD Submitted 31 Jul 2022 50 yards away

    Replacement of the existing single glazed ground floor casement window with a double glazed traditional sash unit to match No. 32 Maunsel Street.

    Granted Lawful development Windows or glazing 9 docs

  • Mortuary Car Park For Horseferry Road Coroners Court Regency Place London SW1P 2EB

    26/01910/CLOPUD Submitted 24 Mar 2026 50 yards away

    84% historically approved · decision due ~19 May

    Replacement of air quality monitoring station with upgraded station.

    Awaiting decision Lawful development 7 docs

  • 9 Maunsel Street London SW1P 2QL

    26/07139/FULL Submitted 19 Oct 2026 50 yards away

    88% historically approved · decision due ~14 Dec

    Erection of a single storey rear extension at ground floor level.

    Awaiting decision Full applications Extension
    Small domestic

  • 9 Maunsel Street London SW1P 2QL

    26/00054/FULL Submitted 6 Jan 2026 50 yards away

    88% historically approved · decision due ~3 Mar

    Erection of a single storey rear extension at ground floor level.

    Awaiting decision Full applications Extension 17 docs
    Small domestic

  • Flat 13 4 Regency Street London SW1P 4BZ

    25/09362/FULL Submitted 26 Dec 2025 50 yards away

    Replacement of existing windows using slim-profile double glazing.

    Granted Full applications Windows or glazing 24 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