5 Carlton House Terrace London SW1Y 5AQ

1. 10 Apr 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 5 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.

• 6 - 9 Carlton House Terrace London SW1Y 5AG

  26/05675/LBC Submitted 19 Aug 2026 50 yards away

  90% historically approved · decision due ~14 Oct

  Replacement of existing modern glazed double door in existing opening between Marble Hall in No. 6 and corridor in No. 7 at ground floor level with glazed fire double doors and installatoin of fire rated secondary glazing to inside of fanlight above entrance door to Executive Directors flat at second floor level in No. 7.

  Awaiting decision Heritage and listed buildings Windows or glazing

• 1 Carlton House Terrace London SW1Y 5AF

  25/05079/NMA Submitted 22 Jul 2025 50 yards away

  Variation of condition 1 of planning permission dated 28 April 2021 (RN: 21/01191/FULL) which itself varied condition 1 of planning permission dated 28 August 2020 (RN: 20/04449/FULL) which itself varied condition 1 of planning permission dated 09 April 2020 (RN: 20/00755/FULL) for use of the building as a single residential dwelling (Class C3) with associated internal and external alterations including erection of a sun room with terrace at roof level, partial infill of rear lightwell at basement level and car port enclosure. NAMELY, to remove the list of approved drawings from the operative part of the decision notice of RN: 21/01191/FULL and to insert them within Condition 1.

  Granted Amendments Extension 8 docs
  Domestic

• Waterloo Gardens West Of Waterloo Place Carlton House Terrace London

  25/07296/TCA Submitted 9 Oct 2025 50 yards away

  T414 - Platanus x hispanica: reduce back from building and balcony to give 2.5m clearance.

  Granted Trees 7 docs

• Waterloo Gardens West Of Waterloo Place Carlton House Terrace London

  25/06858/TCA Submitted 24 Sep 2025 100 yards away

  T401 - Platanus x hispanica (London Plane): Crown lift to 5.2 m over road/parking area, also improving visibility of the statue. T402 - Platanus x hispanica (London Plane): Crown lift to 5.2 m over road/parking area. Reduce the extended section of the mid/ upper crown from the extraneous secondary stem to the south, by approximately 2 m, to reduce loading and address crown imbalance. T403 - Platanus x hispanica (London Plane): Crown lift to 5.2 m over road/parking area. T404 - Platanus x hispanica (London Plane): Crown lift to 5.2 m over road/parking area. T405 - Platanus x hispanica (London Plane): Crown lift to 5.2 m over road/parking area. Reduce the extended lateral lowest limb to the southeast at around 6m, and the two extended stem/ limbs to the south and south-east in the upper/mid crown at around 18-20m by approximately 2m, to reduce loading and address crown imbalance. T406 - Platanus x hispanica (London Plane): Crown lift to 5.2 m over road/parking area. Reduce the two extended stem/ limbs to the south & southeast in the lower/ mid crown at around 7 - 10m, by approximately 2 m, to reduce loading and address crown imbalance. T409 - Ilex aquifolium (Holly): Crown lift to 2m. T410 - Platanus x hispanica (London Plane): Crown lift to 5.2 m over road/parking area, also improving visibility of the statue. Prune to clear street light by 1.5 m. Lift remaining crown to 4m to clear shrubs. T411 - Platanus x hispanica (London Plane): Crown lift to 4m.

  Granted Trees 8 docs

• 3 Carlton Gardens London SW1Y 5AA

  26/04435/TPO Submitted 3 Jul 2026 100 yards away

  100% historically approved · decision due ~28 Aug

  T5 Lime - Courtyard area: Crown Reduction - To reduce the height and radial spread of the canopy by up to 3 metres, shape accordingly and remove major deadwood and trunk growth to crown break. H3 Portuguese Laurel - Hedge reduction - To reduce the height by up to 1.5 metre and to trim and shape all sides to create a more tight and compact hedge including the removal of one dead Laurel as annotated in photo. Additional bark chippings will be added to maintain moisture level to the whole hedge. To supply and plant a new Portuguesue Laurel of at least 2 metres in height. Reason for work ? General Maintenance.

  Awaiting decision Trees

• 3 Carlton Gardens London SW1Y 5AA

  26/00374/FULL Submitted 22 Jan 2026 100 yards away

  87% historically approved · decision due ~19 Mar

  Replacement of air conditioning condenser units within new acoustic enclosures in south lightwell. (Linked to 26/00375/LBC)

  Awaiting decision Full applications 21 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