54 Chester Square London SW1W 9EA

This site has had 6 applications since 2025: 1 approved, 0 refused.

• 26/01509/ADFULL Granted

  54 Chester Square London SW1W 9EA

  Detailed drawings of new infill roof and boundary wall trellis pursuant to Condition 4 of planning permission dated 20th February 2026 (RN: 25/08369/FULL).

  Decided 20 Mar 2026 Full applications
• 26/01216/FULL Awaiting decision

  54 Chester Square London SW1W 9EA

  Removal of existing front lightwell and roof level air-conditioning units, installation of two new air-conditioning units and acoustic enclosure at main roof level, and removal and replacement of external CCTV cameras.

  Submitted 26 Feb 2026 Full applications
• 26/01217/LBC Awaiting decision

  54 Chester Square London SW1W 9EA

  Removal of existing front lightwell and roof level air-conditioning units, installation of two new air-conditioning units and acoustic enclosure at main roof level, and removal and replacement of external CCTV cameras. Associated internal works using existing service routes. (Linked to RN: 26/01216/FULL).

  Submitted 26 Feb 2026 Heritage and listed buildings
• 25/08370/LBC Awaiting decision

  54 Chester Square London SW1W 9EA

  Replacement roof to existing rear link extension to extend existing roof terrace with associated alterations to existing roof terraces, infilling two extract grilles in rear elevation, window replacements and internal alterations & refurbishment. (Linked with 25/08369/FULL)

  Submitted 17 Nov 2025 Heritage and listed buildings
• 25/08369/FULL Awaiting decision

  54 Chester Square London SW1W 9EA

  Replacement roof to existing rear link extension to extend existing roof terrace with associated alterations to existing roof terraces, infilling two extract grilles in rear elevation and replacement of windows. (Linked with 25/08370/LBC)

  Submitted 17 Nov 2025 Full applications

1. 9 Mar 2026

   Received by Westminster

2. 11 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 6 May 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 65 days over the applications it decided in the last year.

• 25/08370/LBC Awaiting decision

  54 Chester Square London SW1W 9EA

  Replacement roof to existing rear link extension to extend existing roof terrace with associated alterations to existing roof terraces, infilling two extract grilles in rear elevation, window replacements and internal alterations & refurbishment. (Linked with 25/08369/FULL)

  Submitted 17 Nov 2025 Heritage and listed buildings
• 26/01509/ADFULL Granted

  54 Chester Square London SW1W 9EA

  Detailed drawings of new infill roof and boundary wall trellis pursuant to Condition 4 of planning permission dated 20th February 2026 (RN: 25/08369/FULL).

  Decided 20 Mar 2026 Full applications

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 42 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.

• 47 Chester Square London SW1W 9EA

  26/00891/ADFULL Submitted 12 Feb 2026 50 yards away

  87% historically approved · decision due ~9 Apr

  Details of signed Appendix A pursuant to Condition 9 of planning permission dated 10 September 2025 (RN24/05375/FULL)

  Awaiting decision Full applications 4 docs

• 60 Chester Square London SW1W 9EA

  26/01153/ADFULL Submitted 24 Feb 2026 50 yards away

  Details of CCTV fixtures showing their design, size and position, and relationship with existing architectural detailing and dormers pursuant to condition 4 parts 1 and 3 and, photo sample of roofing slate pursuant to part-discharge of condition 5 of planning permission dated 11th November 2025 (RN: 25/06259/FULL).

  Refused Full applications Loft or dormer 15 docs

• 47 Chester Square London SW1W 9EA

  25/08140/ADFULL Submitted 7 Nov 2025 50 yards away

  87% historically approved · decision due ~2 Jan

  Details of contaminated land investigation pursuant to Condition 8 (phase 1-3) of planning permission dated 10th September 2025 (RN: 24/05375/FULL).

  Awaiting decision Full applications 11 docs

• 47 Chester Square London SW1W 9EA

  26/02962/ADFULL Submitted 6 May 2026 50 yards away

  87% historically approved · decision due ~1 Jul

  Details of facing materials including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to discharge of condition 4 of planing permission dated 10th September 2025 (RN: 24/05476/LBC). Linked to 26/02877/ADLBC

  Awaiting decision Full applications Windows or glazing 6 docs

• 47 Chester Square London SW1W 9EA

  26/02877/ADLBC Submitted 1 May 2026 50 yards away

  90% historically approved · decision due ~1 Jul

  Details of facing materials including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to discharge of condition 3 of listed building consent dated 10th September 2025 (RN: 24/05476/LBC). Linked to 26/02962/ADFULL

  Awaiting decision Conditions Windows or glazing 7 docs

• 54 Chester Square London SW1W 9EA

  26/01509/ADFULL Submitted 9 Mar 2026 50 yards away

  Detailed drawings of new infill roof and boundary wall trellis pursuant to Condition 4 of planning permission dated 20th February 2026 (RN: 25/08369/FULL).

  Granted Full applications Extension 14 docs
  Small domestic

• 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
• 26/05026/ADLBC Awaiting decision

  St James's Park The Mall London SW1A 1AA

  Details of method statement for re-carving works pursuant to condition 3(i) of listed building consent dated 16 July 2026 (RN: 26/03399/LBC)

  Received 27 Jul, published by the council 4 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