Sanctuary Buildings 20 Great Smith Street London SW1P 3BT

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
• 25/07203/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• 25/07204/LBC Withdrawn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
• 25/06339/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

1. 15 Sep 2025

   Received by Westminster

2. 15 Oct 2025

   Validated

   Checked as complete and ready for consideration.

3. 19 Feb 2026

   Decision issued: Application Permitted

4. 21 Jul 2026

   Added to PlanIndex

1 later application on the register refers to this one:

• 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

Westminster granted permission on 19 February 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.

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.

• 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

  25/07203/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

  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

  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

• 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