Planning application
26/00837/FULL
Basement And Ground Floor 38 Montagu Square London W1H 2LL
Proposal
Variation of condition 4(b) of planning permission dated 28 December 2023 (RN 23/07346/FULL) for the demolition of existing roof and erection of a mansard roof extension at first floor level and alterations to the front and rear of the portion of the building fronting onto Bryanston Mews East. Subdivision and reconfiguration of existing ground and lower ground floor levels of the building and together with the new first floor extension to the mews portion of the building, create two self-contained residential units (Class C3) and associated external alterations. Lowering of front pavement vault [Site includes 22 Bryanston Mews East] (Linked with 23/07347/LBC) NAMELY, to amend the wording of condition 4 (b) to remove reference of the approved rooflights are to be conservation rooflights and low profile horizontal rooflights.
As published by the council, reference 26/00837/FULL
Timeline
Dates from the published record
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11 Feb 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
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25/09024/ADFULL Refused
Basement And Ground Floor 38 Montagu Square London W1H 2LL
Details of the new rooflights, demonstrating that these are conservation rooflights pursuant to condition 4 (B) of listed building dated 28th December 2023 (RN: 23/07347/LBC)
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26/01422/LBC Awaiting decision
Basement And Ground Floor 38 Montagu Square London W1H 2LL
Variation of condition 4(b) of listed building consent dated 28 December 2023 (RN 23/07347/LBC) for the demolition of existing roof and erection of a mansard roof extension at first floor level and alterations to the front and rear of the portion of the building fronting onto Bryanston Mews East. Subdivision and reconfiguration of existing ground and lower ground floor levels of the building and together with the new first floor extension to the mews portion of the building, create two self-contained residential units (Class C3) and associated external alterations. Lowering of front pavement vault [Site includes 22 Bryanston Mews East] (Linked with 23/07346/FULL) NAMELY, to replace the wording of "conservation rooflights" with "low profile horizontal rooflights". (Linked to 26/00837/FULL)
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25/09109/LBC Granted
Flat 1 40 Montagu Square London W1H 2LL
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04/09790/LBC Granted
33 Montagu Square London W1H 2LJ
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04/09789/FULL Granted
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06/04851/LBC Granted
33 Montagu Square London W1H 2LJ
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