Planning application
26/02623/NMA
Underground Car Park Cavendish Square London W1G 0PG
Proposal
Amendments to planning permission dated 24th May 2022 (RN 19/08460/FULL) for: Demolition and erection of above ground structures in conjunction with the use of an underground car park (Sui Generis) as a flexible mixed use commercial development comprising uses within the following use classes A1-A5, B1,B2, B8, C1, C2, D1, and D2 along with the excavation of a 4th basement level, new entrances and associated landscaping and highways works to provide up to 25,953 sqm (GIA) of floorspace NAMELY, design refinements to Level 04, the South East Pavilion (lifting pavilion), the South West Lift and the North Pavilions.
As published by the council, reference 26/02623/NMA
Timeline
Dates from the published record
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21 Apr 2026
Received by Westminster
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1 May 2026
Decision issued: Application Permitted
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21 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About amendments applications
How this application type works
An amendment application changes a permission that already exists. Non-material amendments cover small adjustments with no wider effect, while minor material amendments, usually made by varying a condition, allow modest design changes without a fresh application. Anything beyond that needs a new permission, so the scope here is deliberately narrow.
Nearby applications
Within 500 metres
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26/03510/LBC Awaiting decision
20 - 21 Cavendish Square London W1G 0RN
Installation of replacement roof top plant with a dummy mansard roof extension, replacement plant at ground floor and new third floor roof structure and new substation at the lower ground floor. [Linked to 26/03509/FULL]
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25/07919/ADV Awaiting decision
Market Hall West End 9 Holles Street London W1G 0BD
High Level Illuminated Fascia Signage to Cavendish Square Elevation & 2no A Boards to the Holles Street Paved Entrance
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25/08061/LBC Awaiting decision
3 Cavendish Square London W1G 0LB
Internal fitout works to return a CAT B space back to a CAT A space as part of the landlord's dilapidation works.
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25/05783/LBC Granted
Third Floor 3 Cavendish Square London W1G 0LB
Fit out works to the third floor
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25/07307/TELNOT Decided
33 Cavendish Square London W1G 0PS
The proposal requires removal of 6no. antennas and associated ancillary equipment; Installation of 2no. antenna on the existing support pole at a height of 33.02m AGL, 4no. antennas on existing support pole at a height of 33.20m AGL and associated ancillary equipment; Upgrade of the equipment within the existing cabinet and development works thereto.
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25/06186/LBC Granted
Cavendish House 18 Cavendish Square London W1G 0PJ
Removal of double doorway with surrounding frame and glazing, provision of matwell, refurbishment of C20th and C21st elements.
Other amendments applications
In Westminster
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26/04962/NMA Awaiting decision
Serpentine Gallery Kensington Gardens Exhibition Road London W2 3XA
Amendments to planning permission dated 27 February 2025 (RN: 24/08940/FULL) for the installation of temporary art sculpture from 24 March 2025 to 09 September 2025; NAMELY to extend the temporary planning consent until 21st March 2027.
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26/04951/NMA Awaiting decision
43 - 45 Portman Square London W1H 6LY
Amendments to planning permission dated 22 April 2026 (25/06153/FULL) for: Variation of Condition 1 of planning permission dated 7 April 2025 (24/04987/FULL) for: Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works NAMELY; to amend the wording of Condition 27 to allow basement demolition work to proceed.
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26/04873/NMA Awaiting decision
Orbis House 5 Mansfield Street London W1G 9NG
Amendments to planning permission dated 05 September 2024 (RN: 24/01895/FULL) for: new courtyard surface including walk-on rooflight; window and door alterations; new window to Mansfield Mews at second floor level; new rooflights; repairs to roof and external brickwork; erection of new staircase in front area lightwell; partial infill of rear lightwell at ground floor level; erection of roof terrace; installation of PV panels at roof level; and associated works namely; to allow provision of guarding system to provide safe access for maintenance across the roof; alteration at south elevation omitting window SFW11 from the new WC, remove the existing RWP from the internal courtyard corner, removal of the existing plastic section of a redundant vent pipe at lower level and retain original lead; new cast iron rain water pipes at west elevation; and internal layout alterations at basement, ground, 2nd, 3rd floors. (Linked with 26/04876/LBC)
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26/04870/NMA Awaiting decision
34 Park Street London W1K 2JD
Amendments to planning permission dated 8 May 2026 (25/07808/FULL) for general refurbishment and M&E upgrade of the office building namely; roof walkable skylight, GF meeting room wall mounted TV, garden bench and planters, fire lobbies, L4 glass partition, reception to hall door swing change, front lightwell electric cupboard change, wall panelling on LGF and L5, LGF modular screen, LGF courtyard window door infill, and LGF cove lighting.
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26/04816/NMA Awaiting decision
Ebury Bridge Estate Ebury Bridge Road London SW1W 8PX
Amendments to planning permission dated 21 July 2023 (RN:23/00331/COOUT) for a mixed use development in outline for residential floorspace and ancillary residential facilities (Class C3) non-residential floorspace comprising flexible retail (Classes A1 - A4), community (Class D1), leisure (Class D2) and workspace (Class B1) floorspace; provision of basement; new pedestrian and vehicular access; and associated amenity space, open space, plant, landscaping, car and cycle parking, refuse storage, servicing area, and other associated infrastructure works; and detailed planning consent for Blocks 7 and 8 comprising residential floorspace and ancillary residential facilities (Class C3); provision of a basement; new pedestrian and vehicular access; and associated amenity space landscaping, car and cycle parking, refuse storage, servicing area, and other associated infrastructure works, namely amendments to the approved Masterplan Phasing to incorporate enabling works and piling in Phase 2a and 3a.