3C Motcomb Street London SW1X 8JU

This site has had 2 applications since 2026.

• 26/03199/FULL Awaiting decision

  3C Motcomb Street London SW1X 8JU

  Extension of the existing fire escape platform and replacement of the fire escape door. [Linked to 26/03200/LBC]

  Submitted 14 May 2026 Full applications

1. 14 May 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 9 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 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.

• 5A Motcomb Street London SW1X 8JU

  23/04821/TCA Submitted 13 Jul 2023 50 yards away

  T1253 1 x Robinia pseudoacacia (Golden False Acacia) - Prune from adjacent structure to clear building and chimney by 1.5 m, removing regrowth only.

  Granted Trees 6 docs

• Flat 3 Carysfort House West Halkin Street London SW1X 8JS

  26/05492/FULL Submitted 12 Aug 2026 50 yards away

  87% historically approved · decision due ~7 Oct

  Replacement of single glazed windows at the ground floor flat front elevation, with slimline double glazed windows in matching style.

  Awaiting decision Full applications Windows or glazing

• Flat 3 Carysfort House West Halkin Street London SW1X 8JS

  26/05493/LBC Submitted 12 Aug 2026 50 yards away

  90% historically approved · decision due ~7 Oct

  Replacement of single glazed windows at the ground floor flat front elevation, with slimline double glazed windows in matching style.

  Awaiting decision Heritage and listed buildings Windows or glazing

• 3C Motcomb Street London SW1X 8JU

  26/03199/FULL Submitted 14 May 2026 50 yards away

  87% historically approved · decision due ~9 Jul

  Extension of the existing fire escape platform and replacement of the fire escape door. [Linked to 26/03200/LBC]

  Awaiting decision Full applications Extension 10 docs

• 15 Halkin Mews London SW1X 8JZ

  25/08082/FULL Submitted 6 Nov 2025 50 yards away

  87% historically approved · decision due ~1 Jan

  Installation of two sets of traditional-style window security bars to the existing ground floor front windows.

  Awaiting decision Full applications Windows or glazing 10 docs

• 15 Halkin Mews London SW1X 8JZ

  25/08066/LBC Submitted 5 Nov 2025 50 yards away

  90% historically approved · decision due ~1 Jan

  Installation of two sets of traditional-style window security bars to the existing ground floor front windows.

  Awaiting decision Heritage and listed buildings Windows or glazing 11 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