78 Chester Square London SW1W 9DU

This site has had 2 applications since 2026.

• 26/03262/ADFULL Awaiting decision

  78 Chester Square London SW1W 9DU

  Detailed drawings (sections and elevations at a scale of 1:10 and/or 1:20) of the new windows and doors (to be annotated to correspond to rooms and floor level) and detailed drawings of section drawing (scale of 1:10) through the mansard showing the dormer window and shoulder of the mansard (see informative 6) pursuant to condition 6 and 9 of planning permission dated 17th May 2024 (RN:24/00172/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 64 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 43 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.

• 79 Chester Square London SW1W 9DU

  26/02994/ADLBC Submitted 7 May 2026 0m away

  91% 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 3 (part iii) of Listed Building Consent dated 11th January 2023 (RN 22/05928/LBC)

  Awaiting decision Conditions 4 docs

• 79 Chester Square London SW1W 9DU

  26/02991/ADFULL Submitted 6 May 2026 0m away

  87% historically approved · decision due ~1 Jul

  Details of biodiversity management plan in relation to second floor green roof pursuant to condition 9 (partial) of planning permission dated 13 December 2022 (RN: 22/05927/FULL)

  Awaiting decision Full applications 9 docs

• 78 Chester Square London SW1W 9DU

  26/03262/ADFULL Submitted 18 May 2026 0m away

  87% historically approved · decision due ~13 Jul

  Detailed drawings (sections and elevations at a scale of 1:10 and/or 1:20) of the new windows and doors (to be annotated to correspond to rooms and floor level) and detailed drawings of section drawing (scale of 1:10) through the mansard showing the dormer window and shoulder of the mansard (see informative 6) pursuant to condition 6 and 9 of planning permission dated 17th May 2024 (RN:24/00172/FULL)

  Awaiting decision Full applications Loft or dormer Windows or glazing 9 docs

• 79 Chester Square London SW1W 9DU

  26/05726/ADFULL Submitted 20 Aug 2026 0m away

  89% historically approved · decision due ~15 Oct

  Details of a further noise report pursuant to condition 12 (part 3) of planning permission dated 5th January 2023 (RN: 22/05927/FULL)

  Awaiting decision

• 79 Chester Square London SW1W 9DU

  26/04198/LBC Submitted 25 Jun 2026 0m away

  90% historically approved · decision due ~20 Aug

  Reconfiguration of the approved photovoltaic array, including changing approved array to one with a lower number of higher performing panels and changing the mounting system (Amendment of Listed Building Consent dated 11 January 2023 RN: 22/05928/LBC.) (Linked with 26/04196/NMA)

  Awaiting decision Heritage and listed buildings

• 79 Chester Square London SW1W 9DU

  26/04197/ADFULL Submitted 25 Jun 2026 0m away

  89% historically approved · decision due ~20 Aug

  Detailed drawings and the manufacturers specification; of the photovoltaic panels that will be used on main roof and the roof of the mews building; pursuant condition 14 of Planning Permission dated 5th January 2023 (RN 22/05927/FULL)

  Awaiting decision

• 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)

  20 Jul 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).

  20 Jul 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)

  27 Jul 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)

  20 Jul 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)

  2 Oct 2025 Conditions