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

This site has had 8 applications since 2026: 6 approved, 0 refused.

• CON/26/01494 Awaiting decision

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

  Discharge of Condition (submission of details - v) section (1:20/1:10) drawings of relationship between the lowered floor slab and historic footings at lower ground floor indicating the retention of historic footings) 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)

  Submitted 8 Apr 2026 Conditions
• LB/26/02022 Granted

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

  Variation of conditions 2 (approved drawings) and 3 (submission of details) of listed building consent LB/25/02622 to allow layout changes to lower ground floor rooms and other internal works; and removal of condition 7 (demolition - hand tools only)

  Decided 4 Jun 2026 Heritage and listed buildings
• NMA/26/02020 Awaiting decision

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

  Non-material amendment to planning permission PP/25/02621 to allow internal layout alterations to some rooms at lower ground, ground and first floor level; and alterations to floor levels at lower ground floor level and first floor level

  Submitted 1 Apr 2026 Amendments
• 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)

  Decided 20 May 2026 Conditions
• 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)

  Decided 19 May 2026 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).?

  Decided 20 May 2026 Conditions
• 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)

  Decided 20 May 2026 Conditions

1. 23 Jan 2026

   Received by Kensington and Chelsea

2. 20 May 2026

   Decision issued: Discharge of Conditions - Grant

3. 20 Jul 2026

   Added to PlanIndex

Kensington and Chelsea granted permission on 20 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.

This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.

• Flat 3, 55 Onslow Square, London, SW7 3LR

  ARB/23/01319 Submitted 23 Feb 2023 0m away

  Prune 1 x Lime Tree in rear garden.

  Granted Trees 7 docs

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

  CON/26/01257 Submitted 23 Jan 2026 0m away

  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)

  Granted Conditions Extension Demolition 13 docs

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

  CON/26/01256 Submitted 23 Jan 2026 0m away

  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).?

  Granted Conditions Extension Demolition 14 docs

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

  LB/26/02270 Submitted 17 Apr 2026 0m away

  96% historically approved · decision due ~12 Jun

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

  Awaiting decision Heritage and listed buildings 21 docs

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

  CON/26/01253 Submitted 9 Jan 2026 0m away

  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)

  Granted Conditions Extension Demolition 13 docs

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

  CON/26/01254 Submitted 9 Mar 2026 0m away

  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)

  Granted Conditions Extension Loft or dormer +1 12 docs

• CON/26/03046 Granted

  15 Launceston Place, London, W8 5RL

  Details required by condition 3 (Submission of details - (a) Elevations and sections depicting form of awning and enclosure, inclusive of means of fixing, and colour and pattern of awning fabric. b) 1:10 elevations and sections of windows demonstrating arrangement, glazing thickness, material, glazing bars, with glazing bars to be integral and true.) of listed building consent 26/01556 (eplacement and enlargement of rear roof dormer and replacement of windows. Removal of front facade drainage downpipe. Installation of surface mounted traditional awnings over rear offshoot 1st floor windows.)

  9 Jun 2026 Conditions
• CON/26/03047 Withdrawn

  2 Sloane Gardens, London, SW1W 8DL

  Details required by condition 3 (Submission of details - (a) details of the waterproofing to the vaults) of listed building consent 25/05745 (Alterations to shopfront including lowering of windows, reinstatement of original entrance doors and fanlight and associated works; internal alterations, including restoration of historic features, removal of non-original partitions, revised ceiling arrangement; and reconfiguration of basement for back-of-house use with retention of historic masonry wall.).

  9 Jun 2026 Conditions
• CON/26/02710 Granted

  21 Holland Villas Road, London, W14 8DH

  DOCUMENTS AND DRAWINGS ARE NOT AVAILABLE ELECTRONICALLY FOR THIS APPLICATION. PLEASE CALL THE CASE OFFICER. Details required by Condition 3b (submission of details) Details of the framing and glazing of the conservatory rooflight at upper ground floor level and the windows and doors to rear lower ground floor level) of planning permission PP/16/01994 (Creation of basement below lower ground floor level; construction of three storey rear extension, single storey side extensions, dormers to top floor and internal alterations)

  19 May 2026 Conditions
• CON/26/03104 Granted

  3 Earls Terrace, London, W8 6LP

  Details required by Condition 3d (York Stone Sample) of listed building consent 24/08271 (Reinstatement of missing fireplaces and original room proportions. Installation of double glazed timber frame windows and doors on front and rear facades. Removal of lightings systems and recessed speakers.)

  10 Jun 2026 Conditions
• CON/26/03015 Granted

  30-33 Sloane Street, 49 Pavilion Road, 2-4 Hans Crescent and Garages to rear of Marland House, London, SW1X 9NE

  Details required by Condition 16 (Thames Water - works) of planning permission 22/06706 (Partial demolition of 30-33 Sloane Street, retention of fa?ade and erection of a 5-storey building of Class E (commercial, business and service) including installation of shopfronts. Total demolition of no.2 Hans Crescent and erection of replacement building to provide Class E floorspace including a rooftop terrace. Reconfiguration and extension of ground floor of no. 49 Pavillion Road to re-provide Class E floorspace, including service corridor. Provision of substation in basement of no. 4 Hans Crescent. Provision of cycle storage and facilities, waste storage, plant, landscaping, photovoltaic panels, and other ancillary works (Major Application).

  5 Jun 2026 Conditions