Planning application
25/08070/LBC
Flat 5 6 West Halkin Street London SW1X 8JA
Proposal
Alterations to existing flat roof to form roof terrace at third floor level including replacement of one glazed opening to the rear elevation with glazed access door; installation of terrace deck; privacy screening and planting.
As published by the council, reference 25/08070/LBC
Timeline
Dates from the published record
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5 Nov 2025
Received by Westminster
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17 Nov 2025
Validated
Checked as complete and ready for consideration.
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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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25/08069/FULL Awaiting decision
Flat 5 6 West Halkin Street London SW1X 8JA
Alterations to existing flat roof to form roof terrace at third floor level including replacement of one glazed opening to the rear elevation with glazed access door; installation of terrace deck, privacy screening and planting.
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25/07306/TELNOT Decided
11A West Halkin Street London SW1X 8JL
Regulation 5 Notice of Intention to Install Fixed Line Broadband Apparatus to a Listed Building.
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26/04464/FULL Awaiting decision
3 West Halkin Street London SW1X 8JJ
Alterations to roof to provide a sunken plant room on the fifth floor attic space. (Linked with 26/04465/LBC)
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26/04465/LBC Awaiting decision
3 West Halkin Street London SW1X 8JJ
Alterations to roof to provide a sunken plant room on the fifth floor attic space. (Linked with 26/04464/FULL)
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26/00571/FULL Awaiting decision
3 West Halkin Street London SW1X 8JJ
Variation of condition 1 of planning permission dated 16 March 2021 (20/07145/FULL) for the use as seven residential flats (Class C3) including the installation of plant at lower ground floor level and associated external alterations. (Site includes 2 West Halkin Street); NAMELY, to vary the approved drawing numbers to allow minor internal and external amendments.
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26/00557/LBC Awaiting decision
3 West Halkin Street London SW1X 8JJ
Internal and external amendments including reconfiguration of partitions/retention of existing partitions; provision of accessible service risers; conservative lower ground floor/ground floor stair case design; sensitive fire safety enhancements; like-for-like replacement of non-original/ dilapidated windows with heritage appropriate timber framed windows.
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)