Planning application
25/07978/LBC
17 Alderney Street London SW1V 4ES
Proposal
Internal alterations including reinstating the doorway between the hallway and living room at ground floor; reinstating the lower ground floor access door on the ground floor landing; new guest WC on the ground floor for easier access for those with additional mobility or access needs; newly regularised skylight on the rear main roof; New smoke and heat detectors throughout; and other associated works.
As published by the council, reference 25/07978/LBC
Timeline
Dates from the published record
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3 Nov 2025
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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25/06332/FULL Awaiting decision
40 Cambridge Street London SW1V 4QH
Use of the building as an Embassy (sui generis).
-
25/08337/CLEUD Awaiting decision
119 Warwick Way London SW1V 4HS
Use of the ground-floor as a self-contained flat.
-
25/06341/FULL Granted
29 Cambridge Street London SW1V 4PR
Installation of a 2 storey rear glazed infill extension at lower ground and ground floor level, installation of steps in front light well, alterations to windows throughout and installation of solar panels at main roof level.
-
25/06342/LBC Granted
29 Cambridge Street London SW1V 4PR
Internal and external alterations including the installation of a 2 storey rear glazed infill extension at lower ground and ground floor level, installation of steps in front light well, alterations to windows throughout and installation of solar panels at main roof level.
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26/00124/LBC Awaiting decision
119 Warwick Way London SW1V 4HS
Internal alterations, in connection with the use of the ground floor as a self-contained flat (Retrospective)
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25/06635/TCA Granted
21 Cambridge Street London SW1V 4PR
1 x Magnolia (T1, rear): Prune back overhanging limb into No.23 by shortening up to 2m at suitable growth points in line with boundary wall.
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)