15 Chelsea Square, London, SW3 6LF

This site has had 5 applications since 2024: 4 approved, 0 refused.

• PP/26/01705 Granted

  15 Chelsea Square, London, SW3 6LF

  Construction of a single-storey basement extension, reconfiguration of the open space/garden at the rear of the property at both basement and ground floor levels, replacement of the L-shaped external concrete staircase with a steel spiral staircase, realignment of the rear wall of the main basement accommodation outwards by 1.5 metres into the paved external area, proposed extension of the ground floor rear terrace by approx. 0.7m over the top of the extended basement accommodation and window fenestration alterations to cinema room.

  Decided 10 Jun 2026 Full applications
• CL/26/01546 Granted

  15 Chelsea Square, London, SW3 6LF

  Replacement of six existing windows and door on ground floor side elevation with a pair of French doors with side-lights and bay window;in white painted hardwood (Certificate of Lawful Proposed Use/Development)

  Decided 5 Jun 2026 Lawful development
• CON/26/00449 Granted

  15 Chelsea Square, London, SW3 6LF

  Details required by condition 7 (Contamination - Verification Report) of planning permission 23/02435 (Construction of single-storey basement extension below footprint of property; demolition of rear single-storey flat roof structure; replacement windows at courtyard elevation; replacement of 4 windows and door with French doors; replacement of railings on parapet wall around second floor roof terrace).

  Decided 20 Apr 2026 Conditions
• CON/25/04789 Withdrawn

  15 Chelsea Square, London, SW3 6LF

  Details required by condition 7 (Contamination - Verification report) of planning permission 23/02435 (Construction of single-storey basement extension below footprint of property; demolition of rear single storey flat roof structure; replacement windows at courtyard elevation; replacement of 4 windows and door with French doors; replacement of railings on parapet wall around second floor roof terrace)

  Decided 2 Oct 2025 Conditions

1. 2 Sep 2024

   Received by Kensington and Chelsea

2. 12 Nov 2024

   Decision issued: Grant Planning Permission/Consent

3. 3 Aug 2026

   Added to PlanIndex

Kensington and Chelsea granted permission on 12 November 2024, 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.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 15 Chelsea Square, London, SW3 6LF

  PP/26/01705 Submitted 8 Mar 2026 0m away

  Construction of a single-storey basement extension, reconfiguration of the open space/garden at the rear of the property at both basement and ground floor levels, replacement of the L-shaped external concrete staircase with a steel spiral staircase, realignment of the rear wall of the main basement accommodation outwards by 1.5 metres into the paved external area, proposed extension of the ground floor rear terrace by approx. 0.7m over the top of the extended basement accommodation and window fenestration alterations to cinema room.

  Granted Full applications Extension Windows or glazing 28 docs
  Small domestic

• 23 Chelsea Square, London, SW3 6LF

  ARB/26/01031 Submitted 19 Mar 2026 0m away

  FELL 1x Gleditsia at rear

  Granted 7 docs

• 13 Chelsea Square, London, SW3 6LF

  CON/22/01555 Submitted 7 Mar 2022 0m away

  Details required by condition nos. 3 (construction traffic management plan (CTMP)) and 4 (professional management of engineering works) of planning permission 21/07922 (Construction of single-storey basement extension below the footprint of the property; removal of extension attached to the flank wall of garage to rebuild the flank wall and install a new door and glazed panel; alterations to fenestration at front and rear elevations; and installation of black painted metal railings to the top of the parapet wall)

  Granted Conditions Extension Windows or glazing 8 docs
  Small domestic

• 15 Chelsea Square, London, SW3 6LF

  CON/26/00449 Submitted 12 Dec 2025 0m away

  Details required by condition 7 (Contamination - Verification Report) of planning permission 23/02435 (Construction of single-storey basement extension below footprint of property; demolition of rear single-storey flat roof structure; replacement windows at courtyard elevation; replacement of 4 windows and door with French doors; replacement of railings on parapet wall around second floor roof terrace).

  Granted Conditions Extension Demolition +1 14 docs
  Small domestic

• 15 Chelsea Square, London, SW3 6LF

  CL/26/01546 Submitted 26 Feb 2026 0m away

  Replacement of six existing windows and door on ground floor side elevation with a pair of French doors with side-lights and bay window;in white painted hardwood (Certificate of Lawful Proposed Use/Development)

  Granted Lawful development Windows or glazing 15 docs

• 14 Chelsea Square, London, SW3 6LF

  CON/26/01382 Submitted 11 Mar 2026 0m away

  Details required by Condition 3 (timber screening) of planning permission PP/25/02407 (Installation of air conditioning units, and retention of timber screen fence and doors with sidelights on second floor roof terrace)

  Granted Conditions 8 docs
  Small domestic

• PP/18/01985 Withdrawn

  Flat 3, 24 Cornwall Gardens, London, SW7 4AW

  Works to second floor flat including erection of rear extension, creation of external roof terrace areas above and to rear of said extension (with perimeter metal railings), together with internal alterations including removal of internal wall between kitchen and living room, and other refurbishment works

  9 Apr 2018 Full applications
• PP/26/03176 Granted

  12 Shawfield Street, London, SW3 4BD

  Replacement windows, new rooflight and replacement lower ground rear rooflights.

  15 Jun 2026 Full applications
• PP/26/03048 Granted

  24 Charles II Place, London, SW3 4NG

  Removal of existing conservatory structure. Construction of a single-storey rear extension at lower ground floor level. Installation of a contemporary three-panel sliding glazed door opening onto rear garden. Internal reconfiguration at lower ground floor level.

  9 Jun 2026 Full applications
• PP/26/03042 Granted

  Flat 7, 7 Egerton Place, London, SW3 2EF

  Installation of air conditioning system including external condenser unit housed within enclosure at roof level. Replacement of roof lantern, rooflight and roof access hatch with flat glazed access hatch and rooflights. Replacement of two rear elevation uPVC windows with timber-framed slimline double-glazed sliding sash windows; and associated external alterations.

  9 Jun 2026 Full applications
• PP/26/02897 Withdrawn

  46 Evelyn Gardens, London, SW7 3BH

  Positioning of two new external heat pump condensers within two separate acoustic enclosures, one on main roof of house and other on rear forth floor roof terrace.

  1 Jun 2026 Full applications