11 Mount Street London W1K 2RB

This site has had 2 applications since 2026.

• 26/01869/FULL Awaiting decision

  11 Mount Street London W1K 2RB

  Installation of automatic opening fire vent at top floor of 11 Mount Street accommodation and fire exit stair core to residential apartments which occupy 1st floor to roof level. [Linked to 26/01651/LBC]

  Submitted 23 Mar 2026 Full applications

1. 13 Mar 2026

   Received by Westminster

2. 15 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 10 June 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 66 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 heritage and listed building applications in a median of 94 days. More in our guide to how long planning decisions take.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• 11 Mount Street London W1K 2RB

  26/01869/FULL Submitted 23 Mar 2026 50 yards away

  87% historically approved · decision due ~10 Jun

  Installation of automatic opening fire vent at top floor of 11 Mount Street accommodation and fire exit stair core to residential apartments which occupy 1st floor to roof level. [Linked to 26/01651/LBC]

  Awaiting decision Full applications New dwelling 16 docs

• Basement And Ground Floor 12 Mount Street London W1K 2RD

  26/00990/FULL Submitted 17 Feb 2026 50 yards away

  87% historically approved · decision due ~14 Apr

  Retrospective consent for the installation of an external condenser unit at lower ground floor level in the front lightwell and internal alterations at lower ground floor level. [Linked to 26/00991/LBC]

  Awaiting decision Full applications 14 docs

• Basement And Ground Floor 12 Mount Street London W1K 2RD

  26/00991/LBC Submitted 17 Feb 2026 50 yards away

  90% historically approved · decision due ~14 Apr

  Retrospective consent for the installation of an external condenser unit at lower ground floor level in the front lightwell and internal alterations at lower ground floor level. [Linked to 26/00990/FULL]

  Awaiting decision Heritage and listed buildings 8 docs

• Flat 1 11 Mount Street London W1K 2RB

  12/05083/LBC Submitted 11 May 2012 50 yards away

  Internal alterations at first floor level

  Granted Heritage and listed buildings 4 docs

• Connaught Hotel Carlos Place London W1K 2AL

  20/07842/ADV Submitted 8 Dec 2020 50 yards away

  Display of one non-illuminated fascia sign measuring 0.3m x 1.5m for a temporary period between 01 December 2020 and 04 January 2021. Linked to 20/07630/FULL

  Decided Advertising 10 docs

• 14 Mount Street London W1K 2RF

  25/06838/FULL Submitted 24 Sep 2025 50 yards away

  Installation of a small wall mounted air conditioning unit located on exterior wall within an enclosed lightwell at first floor level to 14-16 Mount Street. Linked with 25/06839/LBC

  Withdrawn Full applications 10 docs

• 26/04878/LBC Decided

  34 Grosvenor Street London W1K 4QU

  Internal works to facilitate the subdivision of 34 Grosvenor Street and 3 Three Kings Yard

  Received 21 Jul, published by the council 1 Aug 2026 Heritage and listed buildings
• 26/06299/LBC Awaiting decision

  Apartment 33 24 Park Crescent London W1B 1AA

  Alterations to internal partitions, door openings, doors and floor finishes.

  Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/06305/LBC Awaiting decision

  33A Dean Street London W1D 4PP

  Installation of new concrete slab with drainage channels at basement level and new fire surround in B.01.

  Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/06318/LBC Awaiting decision

  124 Hamilton Terrace London NW8 9UT

  Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06317/FULL)

  Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/04141/LBC Decided

  80E Randolph Avenue London W9 1BG

  Replacement of sashes in two front windows at 2nd floor level and one rear window with slimline double glazed timber sashes. (Linked with 26/04142/FULL)

  Received 23 Jun, published by the council 21 Jul 2026 Heritage and listed buildings