3 Carlton Gardens London SW1Y 5AA

This site has had 3 applications since 2026.

• 26/04435/TPO Awaiting decision

  3 Carlton Gardens London SW1Y 5AA

  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.

  Submitted 3 Jul 2026 Trees
• 26/00375/LBC Awaiting decision

  3 Carlton Gardens London SW1Y 5AA

  Replacement of air conditioning condenser units within new acoustic enclosures in south lightwell. (Linked to 26/00374/FULL)

  Submitted 22 Jan 2026 Heritage and listed buildings

1. 22 Jan 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 19 March 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.

• 26/00375/LBC Awaiting decision

  3 Carlton Gardens London SW1Y 5AA

  Replacement of air conditioning condenser units within new acoustic enclosures in south lightwell. (Linked to 26/00374/FULL)

  Submitted 22 Jan 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 26/00375/LBC Awaiting decision

  3 Carlton Gardens London SW1Y 5AA

  Replacement of air conditioning condenser units within new acoustic enclosures in south lightwell. (Linked to 26/00374/FULL)

  Submitted 22 Jan 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 91 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.

• 3 Carlton Gardens London SW1Y 5AA

  26/00375/LBC Submitted 22 Jan 2026 50 yards away

  90% historically approved · decision due ~19 Mar

  Replacement of air conditioning condenser units within new acoustic enclosures in south lightwell. (Linked to 26/00374/FULL)

  Awaiting decision Heritage and listed buildings 21 docs

• 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

• 3 Carlton Gardens London SW1Y 5AA

  26/04435/TPO Submitted 3 Jul 2026 50 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

• Open Space At Stirling Square Carlton Gardens London

  25/06831/TCA Submitted 23 Sep 2025 50 yards away

  T415 - Platanus x hispanica (London Plane): Crown lift to 3.5m overall and 5.2m over road. T417 - Acer pseudoplatanus (Sycamore): crown lift to 3m. Prune from adjacent structure to clear all buildings/walls/roofs by 2 m. T418 - Acer pseudoplatanus (Sycamore): Prune from adjacent structure to clear all buildings/ walls/ roofs by 2 m. T420 - Acer pseudoplatanus (Sycamore): crown lift to 3m T424 - Ligustrum lucidum (Glossy Privet/Chinese Privet): crown lift to 2.5m T425 - Ligustrum lucidum (Glossy Privet/Chinese Privet): crown lift to 2.5m T426 - Ligustrum lucidum (Glossy Privet/Chinese Privet): crown lift to 2.5m T427 - Ligustrum lucidum (Glossy Privet/Chinese Privet): crown lift to 2.5m T666 - Amelanchier sp. (Snowy Mespilus): fell T1644 - Platanus x hispanica (London Plane): Crown lift to 5.2m including removal of trunk epicormic growth. T1645 - Platanus x hispanica (London Plane): Crown lift to 5.2m including removal of trunk epicormic growth. T1646 - Acer pseudoplatanus (Sycamore): Crown lift to 4m

  Granted Trees 8 docs

• 5 - 7 Carlton Gardens London SW1Y 5AD

  22/03015/FULL Submitted 5 May 2022 100 yards away

  Replacement of existing windows with doors and door replacement on fifth floor level, new vents and CCTV camera to terrace and installation of air conditioning unit at roof level.

  Granted Full applications Windows or glazing 23 docs

• 5 Carlton House Terrace London SW1Y 5AQ

  26/02381/LBC Submitted 10 Apr 2026 100 yards away

  90% historically approved · decision due ~5 Jun

  Refurbish the existing commercial kitchen, replacement of the existing modern kitchen equipment, over-clad the existing wall tiles and overlay the existing floor tiles, removal of a low level nib partition wall and introduce new floor gulleys connecting into existing drainage.

  Awaiting decision Heritage and listed buildings 15 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront with Medication Dispensing Outlet.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06297/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Alterations to rear elevation at basement level comprising replacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06294/FULL Awaiting decision

  15 Eaton Mews South London SW1W 9HP

  Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

  Received 15 Sep, published by the council 22 Sep 2026 Full applications
• 26/06317/FULL 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 26/06318/LBC)

  Received 15 Sep, published by the council 22 Sep 2026 Full applications
• 26/06273/FULL Awaiting decision

  9A Grosvenor Square London W1K 5AE

  Installation of natural Portland Stone paving to two front entrances. (Linked to 26/05473/LBC)

  Received 14 Sep, published by the council 22 Sep 2026 Full applications