House 1 42 Bell Street London NW1 5AW

1. 11 May 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 6 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 66 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 91 days. More in our guide to how long planning decisions take.

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.

• 63 Lisson Street London NW1 5DA

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

  87% 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

• 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

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

  22/02438/FULL Submitted 10 Apr 2022 50 yards away

  Installation of three timber framed, double glazed windows to the rear.

  Granted Full applications Windows or glazing 19 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

• First Floor 50 Lisson Street London NW1 5DF

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

  87% 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

  87% historically approved · decision due ~7 Aug

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

  Awaiting decision Full applications

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  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 repolacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06287/FULL Awaiting decision

  Barness Court 6 - 8 Westbourne Terrace London W2 3UW

  Installation of a new riser as per GW10 design comprising a single riser with 7 entries and 9 Taylor valves to be installed. (Linked with 26/06288/LBC)

  Received 14 Sep, published by the council 21 Sep 2026 Full applications
• 26/06278/FULL Awaiting decision

  40 Wellington Road London NW8 9TJ

  Installation of a new external access ramp/slope to provide accessibility to the Barclays bank ATM.

  Received 14 Sep, published by the council 21 Sep 2026 Full applications
• 26/06269/FULL Awaiting decision

  Maisonette Basement And Ground Floor 101 Hereford Road London W2 5BB

  Amalgamation of existing lower ground and ground floor maisonette with the first floor flat to create a single dwelling and associated internal works including creation of a staircase. (Linked with 26/06270/LBC)

  Received 14 Sep, published by the council 21 Sep 2026 Full applications