Planning application
25/08632/FULL
20 Hill Street London W1J 5NJ
Proposal
Alterations and extension at rear second floor level (to square off non-original extension). (Linked to 25/08633/LBC)
As published by the council, reference 25/08632/FULL
Timeline
Dates from the published record
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26 Nov 2025
Received by Westminster
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20 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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25/08633/LBC Awaiting decision
20 Hill Street London W1J 5NJ
Alterations and extension at rear second floor level (to square off non-original extension).(Linked to 25/08632/FULL)
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25/08921/FULL Awaiting decision
20 Hill Street London W1J 5NJ
Relocation of plant to within louvred enclosure to the main roof. (Linked to 25/08922/LBC)
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25/08922/LBC Awaiting decision
20 Hill Street London W1J 5NJ
Relocation of plant to within louvred enclosure to the main roof. (Linked to 25/08921/FULL)
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25/09181/LBC Granted
20 Hill Street London W1J 5NJ
Internal subdivision of the rear western rooms at ground, first and second floor.
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26/01324/ADFULL Awaiting decision
22 Hill Street London W1J 5NJ
Details of method statements and sample panel of the façade refurbishment works pursuant to Condition 3 of planning permission dated 10 July 2024 (RN: 24/02026/FULL)
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26/02684/ADFULL Awaiting decision
22 Hill Street London W1J 5NJ
Detailed drawings and a bio-diversity management plan in relation to the first floor green roof and planters to include construction method, layout, species and maintenance regime pursuant to condition 10 of planning permission dated 12th July 2024 (RN:24/02026/FULL)
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26/04824/ADFULL Granted
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26/04829/ADFULL Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Details of external and internal signage strategy pursuant to Condition 33(E) of planning permission dated 8th April 2024 (RN: 23/00571/FULL)
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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.