12 St James's Gardens, London, W11 4RD

This site has had 2 applications since 2026.

• LB/26/01553 Awaiting decision

  12 St James's Gardens, London, W11 4RD

  Installation of single-storey lower ground floor rear extension and closet wing rooflight; replacement front lightwell staircase; reinstatement of ground floor partition; replacement windows, cornices, doors and floor finishes; installation of kitchen, two bathrooms and building services throughout.

  Submitted 27 Feb 2026 Heritage and listed buildings

1. 27 Feb 2026

   Received by Kensington and Chelsea

2. 1 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 24 April 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Kensington and Chelsea took a median of 84 days over the applications it decided in the last year.

This application is with Kensington and Chelsea for determination, against a statutory target of eight weeks. Over the last year Kensington and Chelsea decided full applications in a median of 111 days. More in our guide to how long planning decisions take.

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.

• 12 St James's Gardens, London, W11 4RD

  LB/26/01553 Submitted 27 Feb 2026 0.1 miles away

  96% historically approved · decision due ~24 Apr

  Installation of single-storey lower ground floor rear extension and closet wing rooflight; replacement front lightwell staircase; reinstatement of ground floor partition; replacement windows, cornices, doors and floor finishes; installation of kitchen, two bathrooms and building services throughout.

  Awaiting decision Heritage and listed buildings Extension Loft or dormer +1 54 docs
  Small domestic

• 1 Darnley Terrace, London, W11 4RL

  LB/23/07170 Submitted 1 Nov 2023 0.1 miles away

  Underpinning of closet wing extension and adjacent boundary wall in connection with approved development granted under PP/23/05366 and LB/23/05367

  Granted Heritage and listed buildings Extension 40 docs
  Small domestic

• 2 St James's Gardens, London, W11 4RB

  LB/23/00787 Submitted 1 Feb 2023 0.1 miles away

  Construction of full-width extension at rear lower ground floor level, with flush roof lights and extension of balcony above with metal railings. Internal alterations and installation of condensers in garden. ***WITHDRAWN***

  Withdrawn Heritage and listed buildings Extension Loft or dormer 17 docs

• 2 St James's Gardens, London, W11 4RB

  PP/23/00786 Submitted 1 Feb 2023 0.1 miles away

  Construction of full-width extension at rear lower ground floor level, with flush roof lights and extension of balcony above with metal railings. Internal alterations and installation of condensers in garden. ***WITHDRAWN***

  Withdrawn Full applications Extension Loft or dormer 16 docs

• 7 Darnley Terrace, London, W11 4RL

  CL/25/05809 Submitted 25 Sep 2025 0.1 miles away

  Erection of a garden studio in place of a roofed, pergola structure (Certificate of Proposed Development/Use)

  Granted Lawful development 14 docs

• 24 St Ann's Road, London, W11 4SR

  PP/26/01712 Submitted 9 Mar 2026 0.1 miles away

  Roof extension

  Granted Full applications Extension 21 docs

• 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

  Received 9 Apr, published by the council 1 Aug 2026 Full applications
• PP/26/03176 Granted

  12 Shawfield Street, London, SW3 4BD

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

  Received 15 Jun, published by the council 20 Jul 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.

  Received 9 Jun, published by the council 20 Jul 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.

  Received 9 Jun, published by the council 20 Jul 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.

  Received 1 Jun, published by the council 20 Jul 2026 Full applications