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Planning application

25/05402/ADLBC

97 Mount Street London W1K 2TD

Granted Westminster Approval of Details (ADLBC)

Proposal

Detailed drawings of the new secondary glazing, detailed drawings of the new doors, detailed method statement, including photographs, showing how each retained door will be upgraded for fire protection, including a plan to show where each retained door is located and detailed drawings of the roof terrace railings pursuant to conditions 6, 7, 8 and 11 of listed building consent dated 14th October 2024 (RN:24/01955/LBC)

As published by the council, reference 25/05402/ADLBC

Timeline

Dates from the published record

  1. 1 Aug 2025

    Received by Westminster

  2. 18 Sep 2025

    Validated

    Checked as complete and ready for consideration.

  3. 6 Oct 2025

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About conditions applications

How this application type works

This type of application deals with conditions attached to an existing permission, either by supplying the details a condition requires, called discharging it, or by asking to vary or remove one. It does not reopen the principle of the permission itself. Building often cannot lawfully start, or continue past a set stage, until the named conditions are discharged.

More on conditions applications in our guide

Nearby applications

Within 500 metres

  • 26/00859/FULL Awaiting decision

    97 Mount Street London W1K 2TD

    Replacement of vault doors at lower-ground floor level and installation of roof breather vents beneath roof terrace decking (Linked to 26/00860/LBC)

    12 Feb 2026 0m away Full applications
  • 26/00860/LBC Awaiting decision

    97 Mount Street London W1K 2TD

    Replacement of vault doors at lower-ground floor level and installation of roof breather vents beneath roof terrace decking. (Linked to 26/00859/FULL)

    12 Feb 2026 0m away Heritage and listed buildings
  • 25/09041/ADFULL Granted

    97 Mount Street London W1K 2TD

    Details of roof terrace railings pursuant to condition 6 of planning permission dated 14th October 2024 (RN: 24/01954/FULL)

    15 Dec 2025 0m away Full applications
  • 26/00136/ADFULL Granted

    97 Mount Street London W1K 2TD

    Details of new doors pursuant to condition 7 of listed building consent dated 14th October 2024 (RN: 24/01955/LBC).

    12 Jan 2026 0m away Conditions
  • 25/08980/ADLBC Granted

    97 Mount Street London W1K 2TD

    Details of design of outlet valve cabinets pursuant to condition 3 of listed building consent dated 6 November 2025 (RN: 25/03472/LBC).

    10 Dec 2025 0m away Conditions
  • 25/08826/ADLBC Granted

    97 Mount Street London W1K 2TD

    Details of roof terrace railings pursuant to condition 11 of listed building consent dated 14th October 2024 (RN: 24/01955/LBC)

    4 Dec 2025 0m away Conditions

In Westminster

  • 26/04967/ADLBC Withdrawn

    Royal Institute Of British Architects 66 Portland Place London W1B 1AD

    Details of installation of services and related fixtures pursuant to condition 8 (partial) of listed building consent dated 10 June 2025 (RN: 25/01205/LBC)

    24 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)

    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
  • 26/04998/ADLBC Awaiting decision

    17 - 21 South Audley Street London W1K 2NY

    Detailed drawings of Bathroom and Kitchen details for apartments 01, 02, 08, 09, 10 and 11 and Reflected ceiling plans for Apartment 1 powder room and bathroom, Apartment 2 powder room and bathrooms, Apartment 8 power room and bathroom, Apartment 9 bathrooms, Apartment 10 bathroom and shower room, and Apartment 11 bathrooms pursuant to partial discharge of conditions 6.3 and 6.10 of listed building consent dated 14th March 2023 (RN: 22/05005/LBC).

    24 Jul 2026 Conditions
  • 26/04992/ADLBC Awaiting decision

    17 - 21 South Audley Street London W1K 2NY

    Detailed drawings of wall construction to new apartments pursuant to partial discharge of condition 6.2 of listed building consent dated 14th March 2023 (RN: 22/05005/LBC).

    24 Jul 2026 Conditions