97 Mount Street London W1K 2TD

This site has had 11 applications since 2025: 7 approved, 0 refused.

• 26/04021/NMA Decided

  97 Mount Street London W1K 2TD

  Amendments to planning permission dated 14th October 2024 (RN 24/01954/FULL) for, "Installation of a new box rooflight (to provide access), creation of a terrace with glass balustrade and replacement of plant with new enclosure all at main roof level"; (Site includes 97 and 99 Mount Street) NAMELY, installation of railings with integrated gate at roof level to prevent access along the parapet party wall.

  Decided 28 Jul 2026 Amendments
• 26/04016/LBC Decided

  97 Mount Street London W1K 2TD

  Installation of railings at roof level with an integrated gate.

  Submitted 18 Jun 2026 Heritage and listed buildings
• 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)

  Submitted 12 Feb 2026 Heritage and listed buildings
• 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).

  Decided 23 Feb 2026 Conditions
• 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)

  Decided 21 Jan 2026 Full applications
• 25/09042/FULL Granted

  97 Mount Street London W1K 2TD

  Installation of dry riser inlet within existing grille.

  Decided 2 Apr 2026 Full applications
• 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).

  Decided 29 Jan 2026 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)

  Decided 6 Mar 2026 Conditions
• 25/05402/ADLBC Granted

  97 Mount Street London W1K 2TD

  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)

  Decided 6 Oct 2025 Conditions
• 25/03472/LBC Granted

  97 Mount Street London W1K 2TD

  Installation of dry riser system and associated works.

  Decided 6 Nov 2025 Heritage and listed buildings

1. 12 Feb 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 9 April 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.

• 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)

  Submitted 12 Feb 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 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)

  Submitted 12 Feb 2026 Heritage and listed buildings

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.

• 97 Mount Street London W1K 2TD

  26/00860/LBC Submitted 12 Feb 2026 50 yards away

  90% historically approved · decision due ~9 Apr

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

  Awaiting decision Heritage and listed buildings 1 doc

• 97 Mount Street London W1K 2TD

  25/09041/ADFULL Submitted 15 Dec 2025 50 yards away

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

  Granted Full applications 5 docs

• 97 Mount Street London W1K 2TD

  26/00136/ADFULL Submitted 12 Jan 2026 50 yards away

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

  Granted Conditions 4 docs

• 97 Mount Street London W1K 2TD

  25/08980/ADLBC Submitted 10 Dec 2025 50 yards away

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

  Granted Conditions 5 docs

• 97 Mount Street London W1K 2TD

  25/08826/ADLBC Submitted 4 Dec 2025 50 yards away

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

  Granted Conditions 10 docs

• 97 Mount Street London W1K 2TD

  25/05402/ADLBC Submitted 1 Aug 2025 50 yards away

  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)

  Granted Conditions Windows or glazing 102 docs

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications