Basement And Ground Floor 14 - 15 Conduit Street London W1S 2XJ

1. 29 Sep 2026

   Received by Westminster

2. 5 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 24 November 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 86 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 119 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.

• Second Floor 16 Conduit Street London W1S 2XL

  26/01398/ADFULL Submitted 4 Mar 2026 50 yards away

  88% historically approved · decision due ~29 Apr

  Details of waste storage arrangements pursuant to Condition 5 of the planning permission dated 7 June 2016 (RN: 15/06533/FULL)

  Awaiting decision Full applications 4 docs

• Second Floor 16 Conduit Street London W1S 2XL

  26/01480/NMA Submitted 9 Mar 2026 50 yards away

  93% historically approved · decision due ~4 May

  Amendment of planning permission dated 7 June 2016 (RN: 15/06533/FULL) for 'Dual/alternative use of the second floor for either office (Class B1a) or residential (Class C3) use (1 x 2 bedroom unit). Installation of 4 x external grilles at second floor level on the Mill Street elevation and 1 x external grille on Conduit Street elevation'. NAMELY to vary the wording of Condition 6 to allow the implementation of an alternative ventilation strategy.

  Awaiting decision Amendments 5 docs

• Second Floor 16 Conduit Street London W1S 2XL

  26/01173/CLOPUD Submitted 24 Feb 2026 50 yards away

  84% historically approved · decision due ~21 Apr

  To confirm the lawfulness of proposed residential use on the second floor of the property, in line with planning permission (RN 15/06533/FULL)

  Awaiting decision Lawful development 9 docs

• 6 - 8 Mill Street London W1S 2AZ

  26/06892/FULL Submitted 9 Oct 2026 50 yards away

  88% historically approved · decision due ~4 Dec

  Variation of condition 1 of planning permission dated 31 August 2023 (RN:23/03515/FULL) for the: Relocation of air conditioning units from rear first floor roof to second floor rear flat roof, railings to second floor flat roof, installation of tiles to exterior rear ground floor level and installation of uplighters to the front facade. NAMELY, to allow provision of railings to two small back of house flat roofs (Application under section 73 of the Act).

  Awaiting decision Full applications

• 6 - 8 Mill Street London W1S 2AZ

  26/02839/ADFULL Submitted 29 Apr 2026 50 yards away

  88% historically approved · decision due ~24 Jun

  Detailed drawings of the fixed glazed awning and retractable awning pursuant to condition 3 of planning permission dated 17th March 2026 (RN: 25/06233/FULL).

  Awaiting decision Full applications Windows or glazing 3 docs

• 6 - 8 Mill Street London W1S 2AZ

  25/06233/FULL Submitted 2 Sep 2025 50 yards away

  Installation of a metal framed structure, with part glazed and part retractable awning roof to first floor rear roof terrace, including some additional heaters and associated works.

  Granted Full applications Windows or glazing 21 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