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Planning application

Chatham House 10 St James's Square London SW1Y 4LE

Awaiting decision Westminster 26/03269/LBC Listed Building Consent Application

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Removal of internal partition wall in the office spaces at the second floor.

As published by the council, reference 26/03269/LBC

Application record

Reference
26/03269/LBC
Type
Listed Building Consent Application
Status
Pending
Received
18 May 2026
Validated
18 May 2026
Ward
St James's
Postcode
SW1Y 4LE

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2025: 1 approved, 0 refused.

  • 25/05354/LBC Granted

    Chatham House 10 St James's Square London SW1Y 4LE

    Remedial structural works to the lightwell and basement vault.

    Decided 26 Sep 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 18 May 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 13 July 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 66 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Pegasus Group Ltd Agent

1,030 applications on PlanIndex · across 165 councils · 89% granted

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

1 document 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

What happens while it is decided

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided heritage and listed building applications in a median of 94 days. More in our guide to how long planning decisions take.

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

  • Chatham House 10 St James's Square London SW1Y 4LE

    25/05354/LBC Submitted 31 Jul 2025 50 yards away

    Remedial structural works to the lightwell and basement vault.

    Granted Heritage and listed buildings 21 docs

  • Flat 11 Bray House Duke Of York Street London SW1Y 6JX

    26/05463/FULL Submitted 11 Aug 2026 50 yards away

    87% historically approved · decision due ~20 Oct

    Installation of replacement windows to the third floor rear and side elevations.

    Awaiting decision Full applications Windows or glazing

  • Flat 6 Bray House Duke Of York Street London SW1Y 6JX

    26/05843/FULL Submitted 25 Aug 2026 50 yards away

    87% historically approved · decision due ~20 Oct

    Installation of replacement windows to the second floor front elevation.

    Awaiting decision Full applications Windows or glazing 17 docs

  • 11 - 12 St James's Square London SW1Y 4LB

    25/09400/FULL Submitted 22 Dec 2025 50 yards away

    87% historically approved · decision due ~16 Feb

    External and internal alterations, including the partial removal of non-heritage additions and the remodelling of the 1980s rear extension, provision of terraces and roof garden and associated works. (Linked to 25/09401/LBC)

    Awaiting decision Full applications Extension 128 docs

  • 11 - 12 St James's Square London SW1Y 4LB

    25/09401/LBC Submitted 22 Dec 2025 50 yards away

    90% historically approved · decision due ~16 Feb

    External and internal alterations, including the partial removal of non-heritage additions and the remodelling of the 1980s rear extension, provision of terraces and roof garden and associated works. (Linked to 25/09400/FULL)

    Awaiting decision Heritage and listed buildings Extension 92 docs

  • Flat 19 Bray House Duke Of York Street London SW1Y 6JX

    25/08598/FULL Submitted 25 Nov 2025 50 yards away

    Replacement of single glazed steel crittall windows with double glazed windows.

    Granted Full applications Windows or glazing 20 docs

In Westminster

  • 26/04878/LBC Decided

    34 Grosvenor Street London W1K 4QU

    Internal works to facilitate the subdivision of 34 Grosvenor Street and 3 Three Kings Yard

    Received 21 Jul, published by the council 1 Aug 2026 Heritage and listed buildings
  • 26/06299/LBC Awaiting decision

    Apartment 33 24 Park Crescent London W1B 1AA

    Alterations to internal partitions, door openings, doors and floor finishes.

    Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
  • 26/06305/LBC Awaiting decision

    33A Dean Street London W1D 4PP

    Installation of new concrete slab with drainage channels at basement level and new fire surround in B.01.

    Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
  • 26/06318/LBC Awaiting decision

    124 Hamilton Terrace London NW8 9UT

    Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06317/FULL)

    Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
  • 26/04141/LBC Decided

    80E Randolph Avenue London W9 1BG

    Replacement of sashes in two front windows at 2nd floor level and one rear window with slimline double glazed timber sashes. (Linked with 26/04142/FULL)

    Received 23 Jun, published by the council 21 Jul 2026 Heritage and listed buildings