ARB/23/01319

1. 23 Feb 2023

   Received by Kensington and Chelsea

2. 24 Mar 2023

   Decision issued: Raise No Objection

3. 3 Aug 2026

   Added to PlanIndex

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.

This page mirrors an entry on the statutory planning register that Kensington and Chelsea 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.

• CON/26/01257 Granted

  Flat 3, 55 Onslow Square and 57 Onslow Square, London, SW7 3LR

  Details required by condition 3(Submission of details - w) extent and form of alterations to floor structure in G11, demonstrating retention of joists and any surviving floor surfaces) of listed building consent LB/25/02622 (Part demolition to allow erection of orangery, lower ground rear extension, introduction of AC units and internal works)

  23 Jan 2026 0m away Conditions
• CON/26/01256 Granted

  Flat 3, 55 Onslow Square and 57 Onslow Square, London, SW7 3LR

  Details required by Condition 3 (v) (Submission of Details) of?Listed Building Consent LB/25/02622?(Part demolition to allow erection of orangery, lower ground rear extension, introduction of AC units and internal works).?

  23 Jan 2026 0m away Conditions
• CON/26/01255 Granted

  Flat 3, 55 Onslow Square and 57 Onslow Square, London, SW7 3LR

  Details required by condition 3(g)(submission of details - (g) Elevation (1:5) drawings and photographs of proposed airbricks;) of listed building consent 25/02622 (Part demolition to allow erection of orangery, lower ground rear extension, introduction of AC units and internal works).

  23 Jan 2026 0m away Conditions
• LB/26/02270 Awaiting decision

  Flat 4, 51 Onslow Square, London, SW7 3LR

  Internal alterations to existing bathrooms, creation of a laundry room and associated alterations.

  17 Apr 2026 0m away Heritage and listed buildings
• CON/26/01253 Granted

  Flat 3, 55 Onslow Square and 57 Onslow Square, London, SW7 3LR

  Details required by Condition 3 (submission of details - a) elevation (1:10) and section (1:5) drawings of new external doors and architraves with details of mouldings in section (1:1). New doors shall be made of solid timber and hand painted, unless otherwise specified in the approved drawings) of Listed Building consent LB/25/02622 (Part demolition to allow erection of orangery, lower ground rear extension, introduction of AC units and internal works)

  9 Jan 2026 0m away Conditions
• CON/26/01254 Granted

  Flat 3, 55 Onslow Square and 57 Onslow Square, London, SW7 3LR

  Details required by Condition 3 (submission of details - c) plan (1:10) and section (1:5) drawings of new rooflights, including curved rooflight and pavement light) of Listed Building consent LB/25/02622 (Part demolition to allow erection of orangery, lower ground rear extension, introduction of AC units and internal works)

  9 Mar 2026 0m away Conditions