Flat 4 Aquarius House 57A Lisson Street London NW1 5DA

1. 10 Apr 2022

   Received by Westminster

2. 20 Jun 2022

   Validated

   Checked as complete and ready for consideration.

3. 5 Aug 2022

   Decision issued: Application Permitted

4. 4 Aug 2026

   Added to PlanIndex

Westminster granted permission on 5 August 2022, 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.

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.

• Flat 5 Aquarius House 57A Lisson Street London NW1 5DA

  25/08845/FULL Submitted 5 Dec 2025 50 yards away

  Replacement of the existing single glazed timber sash windows with double glazed timber sash windows to the front and rear elevations.

  Granted Full applications Windows or glazing 23 docs

• Basement To First Floor Rear 63 Lisson Street London NW1 5DA

  26/04888/ADFULL Submitted 21 Jul 2026 50 yards away

  89% historically approved · decision due ~15 Sep

  Detailed drawings showing the details of the lower ground floor doors, details of section drawings of the new front windows at scale 1:10, details in writing appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site, details of how waste is to be stored on site and how materials for recycling will be stored separately, detailed drawings and specifications of screening to courtyard at ground floor level and details of detailed site investigation pursuant to condition 4, 5, 8, 10, 12 & 13 of planning permission dated 31st July 2025 (RN:25/03614/FULL)

  Awaiting decision Windows or glazing

• 63 Lisson Street London NW1 5DA

  25/08773/FULL Submitted 2 Dec 2025 50 yards away

  88% historically approved · decision due ~27 Jan

  Erection of mansard roof extension to facilitate 1-bed self-contained flat, together with the replacement of existing fenestration and creation of a third floor terrace to the rear and associated external alterations.

  Awaiting decision Full applications Extension Loft or dormer +1 24 docs

• House 1 42 Bell Street London NW1 5AW

  26/03089/FULL Submitted 11 May 2026 50 yards away

  88% historically approved · decision due ~6 Jul

  Erection of two additional floors and installation of a lift and new stairs to central courtyard at first floor level and conversion of the three five-storey houses to form nine new flats together with alterations to stairs and installation of bin and cycle stores within the central courtyard of the site.

  Awaiting decision Full applications New dwelling 28 docs
  Several homes

• First Floor 50 Lisson Street London NW1 5DF

  26/01811/FULL Submitted 19 Mar 2026 50 yards away

  88% historically approved · decision due ~14 May

  Change of use from office to residential dwelling (C3).

  Awaiting decision Full applications 11 docs
  Domestic

• Basement Front And Ground Floor Front 54 Lisson Street London NW1 5DF

  26/03881/FULL Submitted 12 Jun 2026 50 yards away

  88% historically approved · decision due ~7 Aug

  Use of the lower ground and ground floor as a residential unit (Class C3)

  Awaiting decision Full applications

• 26/05689/FULL Decided

  Flat 1 12 Bristol Gardens London W9 2JG

  Demolition of an existing conservatory at the rear at lower ground level and erection of single storey rear extension.

  Received 19 Aug, published by the council 14 Sep 2026 Full applications
• 26/07315/FULL Awaiting decision

  30 Inverness Terrace London W2 3JA

  Relocation of air conditioning units throughout to the lower ground floor lightwells within aluminium enclosure; replacement of all pipes with cast iron pipes; alteration to balconies including replacement of UPVC door with original door arrangement and replacement railing; reopening of previously infilled windows; replacement marble tiles at hallway of No.32 with Victorian floor tiles; replacement of all doors facing the communal staircase with the correct period style doors; removal of red clay tile leanto roof at first floor rear and the roof made good; removal of link bridges to the rear of the second floor and the rear of the third floor; and reopening of previously infilled windows to the stairs lobby at ground, first and second floor to No.30. (Linked with 26/07316/LBC)

  Received 26 Oct, published by the council 27 Oct 2026 Full applications
• 26/05708/FULL Decided

  Flat 23 Imperial Court 55 - 56 Prince Albert Road London NW8 7PT

  Replacement of existing windows and louvres.

  Received 20 Aug, published by the council 18 Sep 2026 Full applications
• 26/07300/FULL Awaiting decision

  3 St James's Close Prince Albert Road London NW8 7LG

  Installation of new aluminium windows; new aluminium glazed doors; alterations to existing window and door openings where required; and associated external works necessary to facilitate the improvements.

  Received 26 Oct, published by the council 29 Oct 2026 Full applications
• 26/07303/FULL Awaiting decision

  Basement To First Floor 13 - 14 Thayer Street London W1U 3JR

  Alterations to the front facade comprising repainting, replacement of the existing tiled decking with timber decking, and replacement of three wall-mounted lamps. (Linked with 26/07304/ADV)

  Received 26 Oct, published by the council 29 Oct 2026 Full applications