Planning application
25/09294/LBC
Basement And Ground Floor Masionette 3 Upper Brook Street London W1K 6PA
Proposal
Replacement and reconfiguration of modern partitions at ground and lower ground floor level, along with the replacement of modern bathroom and kitchen fittings and finishes.
As published by the council, reference 25/09294/LBC
Timeline
Dates from the published record
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23 Dec 2025
Received by Westminster
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31 Mar 2026
Decision issued: Application Permitted
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20 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
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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26/03248/LBC Awaiting decision
Basement And Ground Floor Masionette 3 Upper Brook Street London W1K 6PA
Replacement of existing front elevaiton sash windows with slimline double-glazed heritage units together with minor repair and redecoration of existing facade and existing front doors; replacement of windows and doors in rear modern extension and internal lightwell along with formation of a new window opening. (Linked with 26/03247/FULL)
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26/03247/FULL Awaiting decision
Basement And Ground Floor Masionette 3 Upper Brook Street London W1K 6PA
Replacement of existing front elevation sash windows with slimline double-glazed heritage units; replacement of windows and doors in rear modern extension and internal lightwell along with formation of a new window opening. (Linked with 26/03248/LBC)
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26/02508/FULL Awaiting decision
Development Site At 1 Lees Place, 43 North Audley Street And 22 Grosvenor Square London W1K 6DT
Installation of a single-storey retail pod to the front of the building, fronting North Audley Street, for a temporary period from 1 September 2026 to 31 March 2027. (Linked with 26/02509/LBC)
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26/02509/LBC Awaiting decision
Development Site At 1 Lees Place, 43 North Audley Street And 22 Grosvenor Square London W1K 6DT
Installation of a single-storey retail pod to the front of the building, fronting North Audley Street, for a temporary period from 1 September 2026 to 31 March 2027. (Linked with 26/02508/FULL)
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22/04380/NMA Granted
2 Shepherd Close London W1K 6EA
Amendments to planning permission dated 23 June 2022 (RN:22/02527/FULL) for Enlargement of existing front lightwell, addition of rooflight over main staircase, relocation of lower ground floor door on the rear elevation, addition of lead capped entrance canopy at lower ground level, replacement lead roofing on rear outbuilding, alterations to fenestration openings at lower ground level, replacement fenestrations, and other associated works. NAMELY; revisions to window openings at front lower ground floor level and addition of air bricks.
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25/09270/FULL Granted
30 Grosvenor Square London W1K 6AN
Installation of permanent external planter boxes at ground floor level on the Upper Brook Street elevation and associated works.
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)