Parliamentary Estate Parliament Street London SW1A 2NU

This site has had 5 applications since 2026.

• 26/05113/NMA Decided

  Parliamentary Estate Parliament Street London SW1A 2NU

  Amendments to planning permission dated 17 July 2026 (RN: 26/03093/FULL) for excavation of trial trenches within and adjacent to the Northern Parliamentary Estate. (Linked with 26/03094/LBC); NAMELY, to reposition and alter six trial trenches.

  Submitted 29 Jul 2026 Amendments
• 26/03093/FULL Awaiting decision

  Parliamentary Estate Parliament Street London SW1A 2NU

  Excavation of trial trenches within and adjacent to the Northern Parliamentary Estate. (Linked with 26/03094/LBC)

  Submitted 11 May 2026 Full applications
• 26/03094/LBC Awaiting decision

  Parliamentary Estate Parliament Street London SW1A 2NU

  Excavation of trial trenches within and adjacent to the Northern Parliamentary Estate. (Linked with 26/03093/FULL)

  Submitted 11 May 2026 Heritage and listed buildings
• 26/02700/LBC Awaiting decision

  Parliamentary Estate Parliament Street London SW1A 2NU

  Installation of a borehole and associated works, including plant and pipework, with internal basement alterations and temporary works (Linked to 26/02699/FULL)

  Submitted 23 Apr 2026 Heritage and listed buildings

1. 23 Apr 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 18 June 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 91 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 119 days. More in our guide to how long planning decisions take.

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.

• Parliamentary Estate Parliament Street London SW1A 2NU

  26/02700/LBC Submitted 23 Apr 2026 50 yards away

  90% historically approved · decision due ~18 Jun

  Installation of a borehole and associated works, including plant and pipework, with internal basement alterations and temporary works (Linked to 26/02699/FULL)

  Awaiting decision Heritage and listed buildings 1 doc

• Parliamentary Estate Parliament Street London SW1A 2NU

  26/05113/NMA Submitted 29 Jul 2026 50 yards away

  93% historically approved · decision due ~23 Sep

  Amendments to planning permission dated 17 July 2026 (RN: 26/03093/FULL) for excavation of trial trenches within and adjacent to the Northern Parliamentary Estate. (Linked with 26/03094/LBC); NAMELY, to reposition and alter six trial trenches.

  Decided Amendments

• 1 Parliament Street London SW1A 2NE

  26/06876/LBC Submitted 8 Oct 2026 50 yards away

  90% historically approved · decision due ~3 Dec

  Alterations to the existing Colonnade at 1 Parliament Street, including installation of infill structures within the Colonnade arches, relocation of the frontage to the Colonnade line, associated internal alterations, stone repair and cleaning works, and associated ancillary works. (Linked with 26/06875/FULL)

  Awaiting decision Heritage and listed buildings Extension

• 1 Parliament Street London SW1A 2NE

  26/06875/FULL Submitted 8 Oct 2026 50 yards away

  88% historically approved · decision due ~3 Dec

  Alterations to the existing Colonnade at 1 Parliament Street, including installation of infill structures within the Colonnade arches, relocation of the frontage to the Colonnade line, associated internal alterations, stone repair and cleaning works, and associated ancillary works. (Linked with 26/06876/LBC)

  Awaiting decision Full applications Extension

• Parliamentary Estate Parliament Street London SW1A 2NU

  26/03093/FULL Submitted 11 May 2026 50 yards away

  88% historically approved · decision due ~6 Jul

  Excavation of trial trenches within and adjacent to the Northern Parliamentary Estate. (Linked with 26/03094/LBC)

  Awaiting decision Full applications 5 docs

• Parliamentary Estate Parliament Street London SW1A 2NU

  26/03094/LBC Submitted 11 May 2026 50 yards away

  90% historically approved · decision due ~6 Jul

  Excavation of trial trenches within and adjacent to the Northern Parliamentary Estate. (Linked with 26/03093/FULL)

  Awaiting decision Heritage and listed buildings 3 docs

• 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