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Planning application

Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

Awaiting decision Westminster 26/07412/FULL Full applications

Works: Windows or glazing

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

Proposal

Installation of automatic opening vents to windows in east and west elevations and level 5 of south elevation.

As published by the council, reference 26/07412/FULL

Application record

Reference
26/07412/FULL
Category
Full applications
Status
Pending
Received
30 Oct 2026
Validated
30 Oct 2026
Postcode
SW1P 3BT

Site history

Applications at this address on the Westminster register

This site has had 9 applications since 2025: 3 approved, 0 refused.

  • 26/02778/FULL Awaiting decision

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Installation of automatic opening vents to window openings at levels 00, 01, 02 and 03 on east and west elevations.

    Submitted 27 Apr 2026 Full applications
  • 26/01716/ADFULL Awaiting decision

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Detailed proof that all the necessary licenses under the Highways Act have been secured/approved for the placement of any structures associated with the works on the public highway pursuant to condition 6 of planning permission dated 6th March 2026 (RN:25/07203/FULL).

    Submitted 13 Mar 2026 Full applications
  • 25/09049/LBC Decided

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Replacement of defective lintels above three windows on the sixth floor.

    Decided 19 Mar 2026 Heritage and listed buildings
  • 25/07203/FULL Granted

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Temporary modification and subsequent reinstatement of a single section of curtain walling spanning between the basement and ground floor, to facilitate inclusive access while the main entrance is closed due to internal refurbishment works in that area.

    Decided 6 Mar 2026 Full applications
  • 25/07204/LBC Withdrawn

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Temporary modification and subsequent reinstatement of a single section of curtain walling spanning between the basement and ground floor, to facilitate inclusive access while the main entrance is closed due to internal refurbishment works in that area. (Linked with 25/07203/FULL)

    Decided 14 Nov 2025 Heritage and listed buildings
  • 25/06581/LBC Granted

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Installation of external pipework between the first and second floors on the south elevation.

    Decided 19 Feb 2026 Heritage and listed buildings
  • 25/06339/FULL Awaiting decision

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Installation of external pipework between the first and second floors on the south elevation. (Linked with 25/06581/LBC)

    Submitted 5 Sep 2025 Full applications
  • 25/05903/LBC Granted

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Replacement of raised modern floors at a higher level and installation of internal fall protection at first through third floors of Orchard House.

    Decided 17 Feb 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 30 Oct 2026

    Received by Westminster

  2. 5 Nov 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 25 December 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.

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 full applications in a median of 119 days. More in our guide to how long planning decisions take.

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

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    26/01716/ADFULL Submitted 13 Mar 2026 50 yards away

    88% historically approved · decision due ~13 May

    Detailed proof that all the necessary licenses under the Highways Act have been secured/approved for the placement of any structures associated with the works on the public highway pursuant to condition 6 of planning permission dated 6th March 2026 (RN:25/07203/FULL).

    Awaiting decision Full applications 4 docs

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    26/02778/FULL Submitted 27 Apr 2026 50 yards away

    88% historically approved · decision due ~22 Jun

    Installation of automatic opening vents to window openings at levels 00, 01, 02 and 03 on east and west elevations.

    Awaiting decision Full applications Windows or glazing 40 docs

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    25/05903/LBC Submitted 20 Aug 2025 50 yards away

    Replacement of raised modern floors at a higher level and installation of internal fall protection at first through third floors of Orchard House.

    Granted Heritage and listed buildings 16 docs

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    25/07203/FULL Submitted 6 Oct 2025 50 yards away

    Temporary modification and subsequent reinstatement of a single section of curtain walling spanning between the basement and ground floor, to facilitate inclusive access while the main entrance is closed due to internal refurbishment works in that area.

    Granted Full applications Windows or glazing 18 docs

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    25/07204/LBC Submitted 6 Oct 2025 50 yards away

    Temporary modification and subsequent reinstatement of a single section of curtain walling spanning between the basement and ground floor, to facilitate inclusive access while the main entrance is closed due to internal refurbishment works in that area. (Linked with 25/07203/FULL)

    Withdrawn Heritage and listed buildings Windows or glazing 10 docs

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    25/06339/FULL Submitted 5 Sep 2025 50 yards away

    88% historically approved · decision due ~10 Dec

    Installation of external pipework between the first and second floors on the south elevation. (Linked with 25/06581/LBC)

    Awaiting decision Full applications 22 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