Underground Car Park Cavendish Square London W1G 0PG

This site has had 3 applications since 2026: 1 approved, 0 refused.

• 26/05731/ADFULL Awaiting decision

  Underground Car Park Cavendish Square London W1G 0PG

  Details of Site Environmental Management Plan pursuant to condition 3 of planning permission dated 24 May 2022 (RN: 19/08460/FULL).

  Submitted 21 Aug 2026
• 26/05469/NMA Decided

  Underground Car Park Cavendish Square London W1G 0PG

  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.

  Submitted 12 Aug 2026 Amendments

1. 21 Apr 2026

   Received by Westminster

2. 1 May 2026

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 1 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• 20 - 21 Cavendish Square London W1G 0RN

  26/03510/LBC Submitted 28 May 2026 50 yards away

  90% historically approved · decision due ~23 Jul

  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]

  Awaiting decision Heritage and listed buildings Extension Loft or dormer +1 27 docs

• Market Hall West End 9 Holles Street London W1G 0BD

  25/07919/ADV Submitted 31 Oct 2025 100 yards away

  High Level Illuminated Fascia Signage to Cavendish Square Elevation & 2no A Boards to the Holles Street Paved Entrance

  Refused Advertising 9 docs

• Third Floor 3 Cavendish Square London W1G 0LB

  25/05783/LBC Submitted 15 Aug 2025 100 yards away

  Fit out works to the third floor

  Granted Heritage and listed buildings 22 docs

• Flanders House 1A Cavendish Square London W1G 0PH

  26/04900/LBC Submitted 22 Jul 2026 100 yards away

  Maintenance and repair works to the external elevations of the building including ironwork and windows.

  Decided Heritage and listed buildings Windows or glazing

• Flanders House 1A Cavendish Square London W1G 0PH

  26/07475/ADLBC Submitted 3 Nov 2026 100 yards away

  89% historically approved · decision due ~29 Dec

  Details of the methodology for repairs to the external render, stonework, ironwork and windows pursuant to Conditions 4 and 5 of listed building consent dated 17 September 2026 (RN: 26/04900/LBC).

  Awaiting decision Windows or glazing

• 3 Cavendish Square London W1G 0LB

  26/05556/LBC Submitted 14 Aug 2026 100 yards away

  90% historically approved · decision due ~9 Oct

  Internal fit out of office space on the fourth and fifth floor level.

  Decided Heritage and listed buildings

• 26/07459/NMA Awaiting decision

  1 Hanover Square London W1S 1HA

  Amendments to planning pemrission dated 10 October 2025 (RN: 25/01558/FULL) for the: Partial demolition, refurbishment and extension of the existing building to provide a sub-basement, basement, ground plus eight storey building; infilling and stepped rear extension; excavation of a new sub-basement level; installation of new plant equipment at basement and roof level; terraces at fourth, fifth, sixth, seventh and eighth floor levels; soft and hard landscaping; reprovision of car parking; new cycle parking facilities; and associated external works. Use of the building for retail and/or restaurant (Class E) on part ground floor and office (Class E) on all other floors. NAMELY, to allow alterations to the design of the ground floor frontages on Hanover Square and St George Street.

  Received 3 Nov, published by the council 5 Nov 2026 Amendments
• 26/07438/NMA Awaiting decision

  29 - 31 Hill Street London W1J 5LS

  Amendments to planning permission dated 1st July 2025 (RN 25/01006/FULL) for the external alterations at roof level including the creation of Level 04 roof terrace for use in association with existing office (Class E), replacement and installation of new plant and landscaping, replacement of windows, introduction of louvres, removal and replacement of rooflights, installation of new rooflight and other associated works. NAMELY, for alterations comprising of the removal of window sash boxes and weights, changes to the window mullion arrangement, the removal of two sash windows, the installation of secondary glazing, the removal of existing chamber hatch and installation of extract vent and integrated bench, the external replacement of rainwater goods and hoppers, the removal of bricks and installation of airbricks, minor demolition works, replacement of roof covering, removal of ductwork, roof plant rearrangement, the installation of a new external door to plant area, minor layout alterations and other associated works.

  Received 2 Nov, published by the council 6 Nov 2026 Amendments
• 26/07389/NMA Decided

  Flat 1 5 Grittleton Road London W9 2DD

  Amendments to planning permission dated 04 June 2025 (RN: 25/02022/FULL), NAMELY, amendment of Condition 4 to correct the property address from 9 Aldridge Road Villas to Flat 1 5 Grittleton Road.

  29 Oct 2026 Amendments
• 26/07377/NMA Awaiting decision

  60 Ledbury Road London W11 2AJ

  Amendments to planning permission dated 2nd October 2025 (RN 25/04018/FULL) for the Partial demolition, refurbishment, and erection of a mansard roof extension to form a new third floor with dormers to front, side and rear elevations; to form 6 flats (Class C3) on upper floors; external plant equipment and ductwork; lower ground floor excavation to increase floor to ceiling height; replacement windows; cycle parking and associated external alterations; use of the part ground floor and lower ground floor as retail and restaurant (Class E). Site includes 60-68 Ledbury Road) NAMELY, An amendment to the basement and ground floor drawing reference numbers; amendment to the description of development, in reference to restaurant and or retail use; and amendments to C

  Received 28 Oct, published by the council 3 Nov 2026 Amendments
• 26/07375/NMA Awaiting decision

  77 Hereford Road London W2 5BB

  Amendments to planning permission dated 4th August 2026 (RN 26/03970/FULL) for the Replacement of roof terrace access stair with glazed hatch, new timber decking and front and rear roof railings to roof terrace, with infilling side window of closet wing. NAMELY, Hinged hatch access substituted by sliding hatch.

  Received 28 Oct, published by the council 3 Nov 2026 Amendments