Planning application
26/02814/FULL
33 St James's Square London SW1Y 4JS
Proposal
Variation of conditions 1, 11, 16, 24 and 25 of planning permission dated 19 October 2020 (RN: 20/03222/FULL) for the partial demolition and reconstruction of enlarged rear extension with additional storey; formation of terraces at ground, fourth, fifth and sixth floor levels; excavation to extend existing basement level; installation of plant machinery; internal alterations including installation of new grand stair; and associated external alterations in connection with increase in office floorspace (Class B1). NAMELY, to make changes to the approved drawings to allow changes to extend the lift overrun, remodelling of the roofscape, introduction of a secondary external staircase, omission of sixth floor east elevation terrace, minor amendments to elevations, plant reconfiguration and internal design changes. This also includes variations to Condition 11 (Roof Terrace), Condition 16 (Operational Management Plan), Condition 24 (Roof Terrace Hours) and Condition 25 (C`harles II Street crossover). [Linked to 26/02705/LBC]
As published by the council, reference 26/02814/FULL
Timeline
Dates from the published record
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28 Apr 2026
Received by Westminster
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29 Apr 2026
Validated
Checked as complete and ready for consideration.
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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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26/02705/LBC Awaiting decision
33 St James's Square London SW1Y 4JS
Amendment to lift overrun to provide level access to seventh floor in line with building and fire regulation requirements; remodelling of the roofscape, including an amended set back plant enclosure; introduction of a secondary escape stair as required by fire regulations; omission of sixth floor east elevation roof terrace; minor amendments to east elevation; introduction of seventh floor plant well; internal reconfiguration of layouts and core. [Linked to 26/02814/FULL]
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26/03012/ADFULL Awaiting decision
33 St James's Square London SW1Y 4JS
Details of unilateral undertaking pursuant to condition 7 of planning permission dated 27th October 2020 (RN: 20/03222/FULL) to ensure that demolition on the site will only occur immediately prior to development of the new building.
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25/06267/LBC Granted
Basement Rear And Ground Floor Part And Mezzanine Part 11 Waterloo Place London SW1Y 4AU
Repairing ceiling cracks across multiple bays, repair and reinstatement of plaster cornices where partitions or services have been removed, replacement of missing sections of fluted cornice or cove. Making good of soffit beams, where services or columns have been previously removed, including the repair of holes or damaged stiles. Works to the mezzanine level coffers, including the repair of larger holes using traditional lime-based materials.
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26/04204/LBC Awaiting decision
Second Floor 11 Waterloo Place London SW1Y 4AU
Internal alterations to second floor including the removal and replacement of modern fittings and fixtures to create a new kitchenette, and other associated works.
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25/06872/FULL Granted
Basement Rear And Ground Floor Part And Mezzanine Part 11 Waterloo Place London SW1Y 4AU
Installation of a plant deck and associated plant and acoustic enclosure within the rear lightwell including duct and other associated works.
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25/07796/ADV Awaiting decision
Basement Rear And Ground Floor Part And Mezzanine Part 11 Waterloo Place London SW1Y 4AU
Display of two externally illuminated hanging signs each measuring 1.00m x 1.00m. (Linked 25/07797/LBC & 25/07795/FULL)
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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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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.