Planning application
26/01740/FULL
64 Wimpole Street London W1G 8YS
Proposal
Erection of a new roof terrace and green roof area at rear 2nd floor level; installation of plant and photovoltaic panels at main roof level and new mansard roof extension and installation of plant on the mews roof level; alterations at ground floor front elevation; Internal and external alterations throughout the building in connection with a rear elevation extension from first to fourth floor levels and the reconfiguration of the existing fifth floor level, installation of new double glazed windows throughout all in connection with a change of use to Class E (e) medical use.
As published by the council, reference 26/01740/FULL
Timeline
Dates from the published record
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18 Mar 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.
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26/00802/FULL Awaiting decision
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26/03236/LBC Awaiting decision
Ground Floor 23 Wimpole Street London W1G 8GP
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26/00872/FULL Awaiting decision
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Retrofit of existing windows, including insertion of slimline double-glazing windowpanes to front facade.
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26/04440/LBC Awaiting decision
4 Marylebone Mews London W1G 8PY
Internal refurbishment of existing Studio Mews house including replacement of glazing to rooflights and minor external alterations. [Linked to 26/04439/FULL]
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26/04439/FULL Awaiting decision
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Internal refurbishment of existing Studio Mews house including replacement of glazing to rooflights and minor external alterations. [Linked to 26/04440/LBC]
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25/06123/ADLBC Granted
20 Wimpole Street London W1G 8GF
Detailed drawings of the following parts of the development 1) pipework rationalisation to the front elevation, 2) traditional enclosure to rear plant, 3) Pointing specification, 4) Internal door schedule, noting historic doors to be retained and reuse of partition doors pursuant to condition 4 of listed building consent dated 10th June 2024 (RN: 24/03836/LBC).(Linked to 25/06320/ADFULL).
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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
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