Planning application
26/02941/FULL
12 Berkeley Street London W1J 8DT
Proposal
Variation of condition 1 of planning permission dated 30 March 2026 (RN: 25/08196/FULL) for Alterations to 12 Berkeley Street including replacement of mansard roof with additional storey; extension of rear elevation pitch with inset terraces; infill of lightwell at basement and ground level; reconfiguration of shopfront at ground floor level; upgrades to the building's safety and sustainability performance; and associated works' NAMELY, omission of AHU unit on roof and installation of floor-by-floor MVHR system with associated works to windows, and creation of roof terrace. (Application under Section 73 of the Act).
As published by the council, reference 26/02941/FULL
Timeline
Dates from the published record
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5 May 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 full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
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25/08196/FULL Awaiting decision
12 Berkeley Street London W1J 8DT
Variation of Condition 1 of planning permission dated 01 July 2025 (Ref: 25/00526/FULL) for, 'Alterations to 12 Berkeley Street including replacement of mansard roof with additional storey; extension of rear elevation pitch with inset terraces; infill of lightwell at basement and ground level; reconfiguration of shopfront at ground floor level; upgrades to the building's safety and sustainability performance; and associated works'; Namely, to allow the introduction of a new second-floor terrace, elevational refinements, material alterations, and associated detailing changes as part of the permitted works. (Application under Section 73 of the Act).
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25/06530/LBC Granted
13 Berkeley Street London W1J 8DU
Fit out of internal office areas to existing 4th, 5th and 6th floors including strip out of existing non bearing internal partitions and joinery, independent from historic fabric; strip out of existing kitchens at rear rooms to 4th and 5th Floors; replacement of existing carpet floor tiles for new carpet floor, vinyl floor and ceramic tiles on existing non historic suspended subfloor; new proposed plaster board and glazed non bearing partitions and doors to form new layout, fixed to non historic fabric; decoration to existing perimetral independent lining partitions and ceilings; new proposed kitchen and toilets; installation of new lighting, small power and data and security system.
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25/07116/ADV Awaiting decision
11 Berkeley Street London W1J 8DS
Display of non illuminated fascia sign measuring 2m X 0.6m
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25/07115/FULL Awaiting decision
11 Berkeley Street London W1J 8DS
Installation of a new shopfront.
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25/07668/AD7 Awaiting decision
38 Dover Street London W1S 4NL
Display for a temporary period of six months of a non-illuminated estate agent board located on the face of the building at a height of between 0.8m and 0.03m above pavement level and measuring 0.45m x 0.6m.
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26/01080/ADFULL Granted
8 - 9 Berkeley Street London W1J 8DW
Detailed drawings and a bio-diversity management plan in relation to the planters and green wall pursuant to condition 10 of planning permission dated 7th January 2025 (RN: 24/07177/FULL)
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26/04824/ADFULL Granted
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Detailed design and specification of new blinds to NZH based on mock-up trials on-site. pursuant to condition 32 (i) of planning permission dated 8th April 2024 (23/00571/FULL).
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26/04829/ADFULL Granted
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26/04841/ADFULL Granted
29 Henstridge Place London NW8 6QD
Details of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 5 of planning permission dated 18th November 2025 (RN:25/06159).
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26/04989/FULL Awaiting decision
1 Kildare Terrace London W2 5JT
Erection of a mansard roof extending over the main house and side wing, replacement lower ground rear extension with roof terrace above, lowering of lower ground floor slab, installation of an air source heat pump in rear garden, new front boundary treatment, and new second floor window on the north elevation.
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26/04986/FULL Awaiting decision
Inver Court Inverness Terrace London W2 6JB
Replacement of combustible materials in the render facades; timber decking and plastic soffits/ fascias to terraces with non-combustible materials on the 5th and 6th floors.