Planning application
Underground Car Park Cavendish Square London W1G 0PG
Works: Demolition
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
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, a series of updated drawings relating to the southern entrance, gardeners pavilion, northeast pavilion, and the extent of pavement lights and grilles.
As published by the council, reference 26/05469/NMA
Application record
- Reference
- 26/05469/NMA
- Category
- Amendments
- Status
- Pending
- Received
- 12 Aug 2026
- Validated
- 18 Aug 2026
- Postcode
- W1G 0PG
Timeline
Dates from the published record
-
12 Aug 2026
Received by Westminster
-
18 Aug 2026
Validated
Checked as complete and ready for consideration.
-
22 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 13 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 61 days over the applications it decided in the last year.
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 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
-
Underground Car Park Cavendish Square London W1G 0PG
89% historically approved · decision due ~16 Oct
Details of Site Environmental Management Plan pursuant to condition 3 of planning permission dated 24 May 2022 (RN: 19/08460/FULL).
Awaiting decision -
3 Cavendish Square London W1G 0LB
90% historically approved · decision due ~31 Dec
Internal fitout works to return a CAT B space back to a CAT A space as part of the landlord's dilapidation works.
Awaiting decision Heritage and listed buildings 9 docs -
Third Floor 3 Cavendish Square London W1G 0LB
Fit out works to the third floor
Granted Heritage and listed buildings 22 docs -
3 Cavendish Square London W1G 0LB
90% historically approved · decision due ~9 Oct
Internal fit out of office space on the fourth and fifth floor level.
Awaiting decision Heritage and listed buildings -
3 Cavendish Square London W1G 0LB
89% historically approved · decision due ~22 Oct
Renewal for a temporary period of six months for the display of a non-illuminated 'to let' board attached to the railings in front of the building at street level measuring 0.6m x 0.45m.
Awaiting decision 4 docs -
2 Cavendish Square London W1G 0PA
87% historically approved · decision due ~31 Dec
Removal of existing plant equipment, Installation of new air source heat pump, two new air conditioning units and relocation of four existing air conditioning units within existing plant enclosure at roof level. Associated alterations to lift atrium roof.
Awaiting decision Full applications 15 docs
Other amendments applications
In Westminster
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26/05886/NMA Awaiting decision
10 Spring Gardens London SW1A 2BN
Amendments to planning permission dated 10th July 2025 (RN 25/00695/FULL) for the Use of part-ground, first, sixth, seventh and eighth floor levels as an Embassy (sui generis). Associated external alterations to the ground floor facade on Carlton House Terrace, and part ground floor to Piazza (Spring Gardens) frontage. External alterations to the doors. Installation of roof plant and security screens to the eighth floor. NAMELY, Addition of external attached building signage on West Elevation and South Elevation; Addition of two flagpoles on West Elevation; Addition of a parcel pass through, rather than fixed panel, to door on North Elevation; and omission of smoke vent and replacement with new paving to match existing paving.
-
26/05881/NMA Awaiting decision
50A Warlock Road London W9 3LW
Amendments to planning permission dated 11 August 2026 (RN: 26/04158/FULL) for the: Erection of a single-storey rear extension at lower ground floor level; replacement of existing rear window with a door at ground floor level and creation of terrace with associated railings/screening; and associated external alterations. NAMELY, revise the height of the rear elevation kitchen French doors.
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26/05798/NMA Awaiting decision
3 Blenheim Road London NW8 0LU
Amendments to planning permission dated 18th January 2024 (RN:22/04886/FULL) for Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations. Namely, internal alterations and minor adjustment to rooflight position.
-
26/05670/NMA Awaiting decision
64 St James's Street London SW1A 1NF
Amendments to planning permission dated 2nd September 2021 (21/02158/FULL) for: Demolition of the existing mansard roof and removal of plant and escape stair; erection of new double mansard roof extension and rear extension for additional commercial floorspace (Use Class E); and installation of new escape stair, rear balconies, roof terrace and associated works namely, amendments to allow for the installation of a condenser unit within the rear lightwell.
-
26/05674/NMA Awaiting decision
52 Eaton Place London SW1X 8AL
Amendments to planning permission dated 25 September 2025 (25/05108/FULL) for: Alterations to rear extension at first floor level including creation of rear roof terrace at second floor level; replacement of first and second floor level front windows with double glazed timber sash windows; replacement of front door; reinstatement of period windows and doors namely, to allow replacement of second floor rear full height sash window with set of french doors.