18 Seymour Street London W1H 7HU

This site has had 8 applications since 2025: 1 approved, 1 refused.

• 26/05164/ADLBC Decided

  18 Seymour Street London W1H 7HU

  Details of new vault doors pursuant to condition 3 of listed building consent dated 01 April 2026 (RN: 26/01486/LBC)

  Submitted 30 Jul 2026
• 26/05010/LBC Decided

  18 Seymour Street London W1H 7HU

  Installation of external lighting to the front entrance and front basement lightwell, entry touch panel and proximity reader within the reveal of the entrance doorway.

  Submitted 27 Jul 2026 Heritage and listed buildings
• 26/03007/ADLBC Awaiting decision

  18 Seymour Street London W1H 7HU

  Details of the repairs and upgrading of the rear oriel window pursuant to condition 5 of listed building consent dated 8th August 2023 (RN:23/02367).

  Submitted 7 May 2026 Conditions
• 26/01486/LBC Granted

  18 Seymour Street London W1H 7HU

  Replacement of the structurally failing front basement lightwell wall, with repair and reinstatement of railings and plinth stones; the introduction of a concealed structural backing wall (Stepoc blocks reinforced with concrete) and a lime-bedded reclaimed brick-facing wall.

  Decided 1 Apr 2026 Heritage and listed buildings
• 26/01286/ADLBC Awaiting decision

  18 Seymour Street London W1H 7HU

  Details of vaults waterproofing method pursuant to Condition 7 of listed building consent dated 8 August 2023 (RN: 23/02367/LBC)

  Submitted 2 Mar 2026 Conditions
• 25/07393/ADLBC Refused

  18 Seymour Street London W1H 7HU

  Details of method of waterproofing of the vaults pursuant to Condition 7 of listed building consent dated 8th August 2023 (RN:23/02367/LBC)

  Decided 16 Feb 2026 Conditions
• 25/06157/LBC Awaiting decision

  18 Seymour Street London W1H 7HU

  Repair strategy for the preservation of existing ceilings

  Submitted 29 Aug 2025 Heritage and listed buildings

1. 27 Jul 2026

   Received by Westminster

2. 10 Aug 2026

   Added to PlanIndex

3. 15 Sep 2026

   Status changed to Decided

   Previously Pending.

• 26/05010/LBC Decided

  18 Seymour Street London W1H 7HU

  Installation of external lighting to the front entrance and front basement lightwell, entry touch panel and proximity reader within the reveal of the entrance doorway.

  Submitted 27 Jul 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 26/05010/LBC Decided

  18 Seymour Street London W1H 7HU

  Installation of external lighting to the front entrance and front basement lightwell, entry touch panel and proximity reader within the reveal of the entrance doorway.

  Submitted 27 Jul 2026 Heritage and listed buildings

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

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.

• 18 Seymour Street London W1H 7HU

  26/03007/ADLBC Submitted 7 May 2026 50 yards away

  89% historically approved · decision due ~2 Jul

  Details of the repairs and upgrading of the rear oriel window pursuant to condition 5 of listed building consent dated 8th August 2023 (RN:23/02367).

  Awaiting decision Conditions Windows or glazing 10 docs

• 18 Seymour Street London W1H 7HU

  26/05164/ADLBC Submitted 30 Jul 2026 50 yards away

  89% historically approved · decision due ~24 Sep

  Details of new vault doors pursuant to condition 3 of listed building consent dated 01 April 2026 (RN: 26/01486/LBC)

  Decided

• 18 Seymour Street London W1H 7HU

  26/01286/ADLBC Submitted 2 Mar 2026 50 yards away

  89% historically approved · decision due ~27 Apr

  Details of vaults waterproofing method pursuant to Condition 7 of listed building consent dated 8 August 2023 (RN: 23/02367/LBC)

  Awaiting decision Conditions 7 docs

• 18 Seymour Street London W1H 7HU

  25/07393/ADLBC Submitted 13 Oct 2025 50 yards away

  Details of method of waterproofing of the vaults pursuant to Condition 7 of listed building consent dated 8th August 2023 (RN:23/02367/LBC)

  Refused Conditions 12 docs

• 18 Seymour Street London W1H 7HU

  26/05010/LBC Submitted 27 Jul 2026 50 yards away

  90% historically approved · decision due ~21 Sep

  Installation of external lighting to the front entrance and front basement lightwell, entry touch panel and proximity reader within the reveal of the entrance doorway.

  Decided Heritage and listed buildings 1 doc

• 18 Seymour Street London W1H 7HU

  26/01486/LBC Submitted 9 Mar 2026 50 yards away

  Replacement of the structurally failing front basement lightwell wall, with repair and reinstatement of railings and plinth stones; the introduction of a concealed structural backing wall (Stepoc blocks reinforced with concrete) and a lime-bedded reclaimed brick-facing wall.

  Granted Heritage and listed buildings 16 docs

• 26/05984/FULL Decided

  41 Sutherland Street London SW1V 4JX

  Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

  Received 2 Sep, published by the council 11 Sep 2026 Full applications
• 26/06134/FULL Decided

  Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

  Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

  Received 8 Sep, published by the council 15 Sep 2026 Full applications
• 26/07258/FULL Awaiting decision

  16A Croxley Road London W9 3HL

  Installation of air to air heat pumps to offices and bedrooms.

  Received 22 Oct, published by the council 23 Oct 2026 Full applications
• 26/07193/FULL Awaiting decision

  98 Victoria Street London SW1E 5JL

  Shopfront alterations. (Linked with 26/07194/ADV)

  Received 21 Oct, published by the council 22 Oct 2026 Full applications
• 26/07187/FULL Awaiting decision

  Ground Floor Flat 151 Portnall Road London W9 3BN

  Erection of a single storey rear extension.

  Received 21 Oct, published by the council 22 Oct 2026 Full applications