Underground Car Park Cavendish Square London W1G 0PG

1. 21 Aug 2026

   Received by Westminster

2. 28 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 16 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.

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.

This page mirrors an entry on the statutory planning register that Westminster is required to keep. The published feed for this record does not state which type of application it is, which is common for older entries and for some council systems; the register entry on the council portal will say, alongside the case officer and any consultation dates.

Every planning application follows the same broad path: submission, validation, publicity, then a decision by officers or committee. Our guide to planning application types explains the common types and what each can approve.

• Underground Car Park Cavendish Square London W1G 0PG

  26/05469/NMA Submitted 12 Aug 2026 0m away

  92% historically approved · decision due ~13 Oct

  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.

  Awaiting decision Amendments Demolition

• 3 Cavendish Square London W1G 0LB

  25/08061/LBC Submitted 5 Nov 2025 11m away

  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

  25/05783/LBC Submitted 15 Aug 2025 11m away

  Fit out works to the third floor

  Granted Heritage and listed buildings 22 docs

• 3 Cavendish Square London W1G 0LB

  26/05556/LBC Submitted 14 Aug 2026 11m away

  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

  26/05885/AD7 Submitted 27 Aug 2026 11m away

  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

  25/08049/FULL Submitted 5 Nov 2025 25m away

  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