3 Chester Square Mews London SW1W 9DS

This site has had 2 applications since 2026.

• 26/03261/ADFULL Awaiting decision

  3 Chester Square Mews London SW1W 9DS

  Details showing the provision of electric vehicle charging facilities, available for use within the garage, detailed drawings (elevations and sections at a scale of 1:10 or 1:20) of the construction and window details of the new dormers to the mews, new garage doors and new window and door to the ground floor mews elevation and details of how waste is to be stored on site and how materials for recycling will be stored separately pursuant to condition 4, 8 and 9 of planning permission dated 23rd January 2025 (RN:24/08100/FULL)

  Submitted 18 May 2026 Full applications

1. 18 May 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 13 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 91 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 condition discharge and variation applications in a median of 84 days. More in our guide to how long planning decisions take.

This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.

• 3 Chester Square Mews London SW1W 9DS

  26/03261/ADFULL Submitted 18 May 2026 50 yards away

  88% historically approved · decision due ~13 Jul

  Details showing the provision of electric vehicle charging facilities, available for use within the garage, detailed drawings (elevations and sections at a scale of 1:10 or 1:20) of the construction and window details of the new dormers to the mews, new garage doors and new window and door to the ground floor mews elevation and details of how waste is to be stored on site and how materials for recycling will be stored separately pursuant to condition 4, 8 and 9 of planning permission dated 23rd January 2025 (RN:24/08100/FULL)

  Awaiting decision Full applications Loft or dormer Windows or glazing 11 docs

• 9 Chester Square Mews London SW1W 9DS

  23/03323/FULL Submitted 18 May 2023 50 yards away

  Alterations to the ground floor front elevation, including replacement of windows and a door set, removal of a window/increase in the associated opening and application of rendered details.

  Withdrawn Full applications Windows or glazing 20 docs

• 81 Chester Square London SW1W 9DP

  23/04554/CLOPUD Submitted 4 Jul 2023 50 yards away

  Re-routing soil pipe within lower ground floor ceiling; creation of a new bulkhead to contain soil pipe and ventilation pipes internally; and new opening in the facade for soil pipe to exit the building.

  Granted Lawful development 11 docs

• 79 Chester Square London SW1W 9DU

  26/02993/ADFULL Submitted 7 May 2026 50 yards away

  88% historically approved · decision due ~2 Jul

  Details of new interior, which must be appropriate to the period of the building and their location; pursuant to condition 5 (part iii) of planning permission dated 5th January 2023 (RN 22/05927/FULL)

  Awaiting decision Full applications 4 docs

• 33 Lower Belgrave Street London SW1W 0LS

  26/04617/FULL Submitted 10 Jul 2026 50 yards away

  88% historically approved · decision due ~4 Sep

  Replacement front, rear and side elevation windows with double glazed timber sashes and main entrance door with solid timber door with double glazed fan light.

  Decided Full applications Windows or glazing

• 33 Lower Belgrave Street London SW1W 0LS

  25/07453/FULL Submitted 15 Oct 2025 50 yards away

  Removal of a rear window between ground and first floor level. (Retrospective)

  Granted Full applications Windows or glazing 27 docs

• 26/02704/ADLBC Decided

  New Zealand House 80 Haymarket London SW1Y 4TE

  Details of new visible security fixtures in the Royal Opera Arcade pursuant to condition 7(f) of listed building consent dated 12th February 2021 (RN: 19/07816/LBC). Linked to 26/02618/ADFULL

  Received 21 Apr, published by the council 21 Jul 2026 Conditions
• 26/04860/ADLBC Granted

  New Zealand House 80 Haymarket London SW1Y 4TE

  Details of external and internal signage strategy pursuant to Condition 7(E) of listed building consent dated 12th February 2021 (RN: 19/07816/LBC)

  Received 20 Jul, published by the council 1 Aug 2026 Conditions
• 26/04843/ADLBC Granted

  New Zealand House 80 Haymarket London SW1Y 4TE

  Detailed design and specification of new blinds to NZH based on mock-up trials on-site pursuant to Condition 6(m) of listed building consent dated 12th February 2021 (19/07816/LBC).

  Received 20 Jul, published by the council 1 Aug 2026 Conditions
• 26/04850/ADLBC Awaiting decision

  17 Belgrave Square London SW1X 8PG

  Detailed drawings of garage doors, roof lantern and any new lighting and flooring in the principal rooms pursuant to condition 6 (iii) (iv) (v) of listed building 18th August 2025 (RN:25/03417/LBC)

  Received 20 Jul, published by the council 1 Aug 2026 Conditions
• 25/07120/ADLBC Granted

  72 - 74 Lancaster Gate London W2 3NH

  Details of new and altered doors and door architraves, including external faces of lifts (detailed elevations and sections at 1:10) pursuant to Condition 3 (A) of Listed Building Consent dated 14 December 2023 (RN: 23/00772/LBC) (Linked app: 25/07088/ADFULL)

  Received 2 Oct, published by the council 21 Jul 2026 Conditions