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
• 26/05009/FULL 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 Full applications
• 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.

• 26/05009/FULL 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 Full applications

1 later application on the register refers to this one:

• 26/05009/FULL 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 Full applications

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.

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.

• 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

  26/05009/FULL Submitted 27 Jul 2026 50 yards away

  88% 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 Full applications 12 docs

• 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

• 26/07202/LBC Awaiting decision

  Basement East And Ground Floor And First Floor 33 Weymouth Street London W1G 7BY

  Replacement of 13 doorsets with fire doors.

  Received 21 Oct, published by the council 23 Oct 2026 Heritage and listed buildings
• 26/07183/LBC Awaiting decision

  306 - 308 Regent Street London W1B 3AT

  Installation of a manually operated retractable fabric awning to the existing shopfront at 308 Regent Street, comprising an orange fabric canopy with discreet printed lettering to the front valance, together with associated supporting framework, mounting brackets and fixings to the existing fa?ade.

  Received 21 Oct, published by the council 22 Oct 2026 Heritage and listed buildings
• 26/07191/LBC Awaiting decision

  6 Wilton Place London SW1X 8RH

  Layout alterations and replacement of internal doors.

  Received 21 Oct, published by the council 22 Oct 2026 Heritage and listed buildings
• 26/07199/LBC Awaiting decision

  49 Queen's Gardens London W2 3AA

  Erection of a mansard roof extension incorporating rooflights and a rear balcony; installation of Juliet balconies at ground and first floor levels to the rear; demolition of the existing courtyard extension and erection of a single-storey infill extension; extension of the rear wing at first floor (mezzanine) and second floor levels; fenestration alterations including the installation of new windows; stucco repairs and partial rebuilding of the rear extensions; and associated internal alterations at all levels. (Linked to 26/07198/FULL)

  Received 21 Oct, published by the council 23 Oct 2026 Heritage and listed buildings
• 26/07192/LBC Awaiting decision

  119 Warwick Way London SW1V 4HS

  Conversion and internal alterations to the ground floor flat (Retrospective)

  Received 21 Oct, published by the council 23 Oct 2026 Heritage and listed buildings