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Planning application

Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

Granted Westminster 25/07203/FULL Full Planning Permission Application

Works: Windows or glazing

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

Proposal

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.

As published by the council, reference 25/07203/FULL

Application record

Reference
25/07203/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
6 Oct 2025
Validated
6 Oct 2025
Decided
6 Mar 2026
Ward
St James's
Decision by
Delegated Decision
Postcode
SW1P 3BT

Site history

Applications at this address on the Westminster register

This site has had 8 applications since 2025: 2 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
  • 25/07204/LBC Withdrawn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 Awaiting decision

    Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    Replacement of raised modern floors at a higher level and internal glazed fall protection screens installation to levels 1, 2 and 3.

    Submitted 20 Aug 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 6 Oct 2025

    Received by Westminster

  2. 6 Mar 2026

    Decision issued: Application Permitted

  3. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 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

Who's behind it

Company information only, from the register and Companies House

Purcell LLP Agent, registered in Thames Ditton

Dissolved · incorporated 2001 · Thames Ditton

203 applications on PlanIndex · across 41 councils · 100% 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

18 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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Open the documents

What this grant of permission means

Westminster granted permission on 6 March 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

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

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

    90% historically approved · decision due ~15 Oct

    Replacement of raised modern floors at a higher level and internal glazed fall protection screens installation to levels 1, 2 and 3.

    Awaiting decision Heritage and listed buildings Windows or glazing 14 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

    87% 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

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

    25/06581/LBC Submitted 15 Sep 2025 50 yards away

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

    Granted Heritage and listed buildings 19 docs

  • Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

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

    87% 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

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

    87% 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

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront with Medication Dispensing Outlet.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Alterations to rear elevation at basement level comprising replacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06294/FULL Awaiting decision

    15 Eaton Mews South London SW1W 9HP

    Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06317/FULL 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 26/06318/LBC)

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06273/FULL Awaiting decision

    9A Grosvenor Square London W1K 5AE

    Installation of natural Portland Stone paving to two front entrances. (Linked to 26/05473/LBC)

    Received 14 Sep, published by the council 22 Sep 2026 Full applications