Planning application
26/00375/LBC
3 Carlton Gardens London SW1Y 5AA
Proposal
Replacement of air conditioning condenser units within new acoustic enclosures in south lightwell. (Linked to 26/00374/FULL)
As published by the council, reference 26/00375/LBC
Timeline
Dates from the published record
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22 Jan 2026
Received by Westminster
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21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About heritage and listed buildings applications
How this application type works
Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.
More on heritage and listed buildings applications in our guide
Nearby applications
Within 500 metres
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26/00374/FULL Awaiting decision
3 Carlton Gardens London SW1Y 5AA
Replacement of air conditioning condenser units within new acoustic enclosures in south lightwell. (Linked to 26/00375/LBC)
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25/05079/NMA Granted
1 Carlton House Terrace London SW1Y 5AF
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.
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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.
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25/06831/TCA Granted
Open Space At Stirling Square Carlton Gardens London
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
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26/02381/LBC Awaiting decision
5 Carlton House Terrace London SW1Y 5AQ
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.
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26/04789/LBC Awaiting decision
89 - 91 Pall Mall London SW1Y 5HS
Installation of glass safety balustrades around the existing squash court area.
Other heritage and listed buildings applications
In Westminster
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26/04984/LBC Awaiting decision
47G Randolph Avenue London W9 1BQ
Installation of replacement fire surround.
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26/04997/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of a morning room side extension. (Linked to 26/04996/FULL)
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26/04979/LBC Awaiting decision
12 Brewer Street London W1F 0SF
Internal alterations including removal of internal enclosures; Replacement flooring, shelving and slatwall systems, staircase handrail repair and other associated joinery works.
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26/04987/LBC Awaiting decision
Basement And Ground Floor 8 Ganton Street London W1F 7QL
Repainting of the existing timber shopfront, hand-painted fascia lettering, installation of a new hanging sign using the existing projecting sign bracket, and installation of a discreet fascia-mounted LED trough light.
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26/04995/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of rear conservatory extensions and an entrance loggia to side with roof terrace above, together with associated landscaping and alterations. (Linked with 26/04994/FULL)