Planning application
26/03332/FULL
1 Montpelier Square London SW7 1JT
Proposal
Variation of condition 1 of planning permission dated 2nd January 2024 (RN:23/03312/FULL) for the Excavation of a new basement, extension at rear lower ground to first floor levels with mechanical plant and enclosure to the roof of the new extension. Namely, to create a level basement at 1 Montpelier Square in lieu of the consented stepped basement Installation of kitchen extract vent through the front wall at lower ground floor level, install an additional condenser located under the side lightwell external staircase, with suitable acoustic treatment, installation of new secondary glazing to the front facade and new slimline double glazing to the rear facades, replacement cornice, re-articulation of the drawing room, provision of safe access to the roof via an access hatch for maintenance, replacement external door to utility room and removal of modern fireplace from breakfast room. (Linked to 26/03327/LBC)
As published by the council, reference 26/03332/FULL
Timeline
Dates from the published record
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20 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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26/01905/FULL Awaiting decision
5 Montpelier Square London SW7 1JT
Retention of existing rear extension and alterations, with the layout of the lower ground, ground and fourth floor that are departures from the approved planning permission dated 12th October 2006 (RN: 06/01827/FULL); and retention of rear roof terrace and associated balustrade. [Linked with 26/01906/LBC]
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26/01906/LBC Awaiting decision
5 Montpelier Square London SW7 1JT
Retention of existing rear extension and alterations, with the layout of the lower ground, ground and fourth floor that are departures from the approved listed building consent dated 12th October 2006 (RN: 06/01828/LBC); and retention of rear roof terrace and associated balustrade. [Linked with 26/01905/FULL]
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26/03327/LBC Awaiting decision
1 Montpelier Square London SW7 1JT
Proposed levelling of the basement floorplate, relocation of the kitchen extract vent through the front elevation at lower ground floor level to the front lightwell, installation of additional condenser unit to the side lightwell/stairwell, with suitable acoustic attenuation, installation of secondary glazing to the front elevation, and double glazing to the rear elevation, and internal alterations to include replacement cornices and re-articulation of the drawing room. (Linked to 26/03332/FULL)
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26/00485/TPO Awaiting decision
Centre Garden Montpelier Square London SW7 1JT
see attached survey T1 London Plane tree prune back from adjacent elm by 2m & clear building T2 Amelanchier clear light to max of 1 m T 3 Scarlet Oak lift over path T 6 Birch tree lift over path T 7 Cherry clear sign T12 N Maple clear other trees by 1.5m T 14 Cherry prune to clear magnolia by 1.5 m T 16 Lime climbing inspection T 18 London Plane Crown lift lower canopy T 22 London Plane tree clear building if necessary T 25 London Plane tree clear building if necessary T 27 Horse Chestnut Crown lift off lower trees & shrubs T 41 London Plane London Plane tree clear building if necessary T 47 Cherry Clear light & clear canopies form adjacent trees T 49 Elm Prune from adj cherries max 1.5 T1 ,22,41 may not require pruning if sufficient clearance
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26/03030/FULL Awaiting decision
37 Trevor Place London SW7 1LE
Alterations including enlargement of louvres and installation of new plant in basement; landscaping of roof terrace; second floor windows replaced with door sets; partial demolition at ground and first floor levels to create new lightwell and landscaped courtyard. ping
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26/03145/TDD Awaiting decision
11 Trevor Place London SW7 1LB
1 x dead cherry: fell.
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