23 Sumner Place, London, SW7 3EG

This site has had 2 applications since 2025: 2 approved, 0 refused.

• LB/25/06077 Granted

  23 Sumner Place, London, SW7 3EG

  Provision of condenser unit within acoustic enclosure at rear lower ground floor lightwell; replacement of 1x window with 1x timber French doors on the rear elevation at lower ground floor level; replacement of 1x casement window with 1x timber sash window at rear closet wing; provision of two extract vents behind air bricks at rear elevation; and internal alterations to improve layout with restoration of historic detailing

  Decided 12 Mar 2026 Heritage and listed buildings

1. 6 Oct 2025

   Received by Kensington and Chelsea

2. 12 Mar 2026

   Decision issued: Grant Planning Permission/Consent

3. 20 Jul 2026

   Added to PlanIndex

Kensington and Chelsea granted permission on 12 March 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.

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.

• 23 Sumner Place, London, SW7 3EG

  LB/25/06077 Submitted 6 Oct 2025 0m away

  Provision of condenser unit within acoustic enclosure at rear lower ground floor lightwell; replacement of 1x window with 1x timber French doors on the rear elevation at lower ground floor level; replacement of 1x casement window with 1x timber sash window at rear closet wing; provision of two extract vents behind air bricks at rear elevation; and internal alterations to improve layout with restoration of historic detailing

  Granted Heritage and listed buildings Windows or glazing 16 docs

• Basement To First Floor Flat, 75 Onslow Square, London, SW7 3LS

  PP/25/05426 Submitted 8 Sep 2025 28m away

  Replacement of windows and doors with slimline glazing to front, side and rear elevations to match existing. New traditional sash windows and doors to rear terrace. Internal alterations at lower ground, ground and first floor levels. Replacement of non-original internal doors. Removal of non-original finish to floors and stairs. New paving to rear garden and terrace.

  Granted Full applications Windows or glazing 56 docs

• Basement To First Floor Flat, 75 Onslow Square, London, SW7 3LS

  LB/25/05427 Submitted 8 Sep 2025 28m away

  Replacement of windows and doors with slimline glazing to front, side and rear elevations to match existing. New traditional sash windows and doors to rear terrace. Internal alterations at lower ground, ground and first floor levels. Replacement of non-original internal doors. Removal of non-original finish to floors and stairs. New paving to rear garden and terrace.

  Granted Heritage and listed buildings Windows or glazing 45 docs

• Flat 8, 61 Onslow Square, London, SW7 3LS

  PP/24/05850 Submitted 28 Aug 2024 32m away

  Replacement of 2 external doors

  Granted Full applications 17 docs

• Basement To First Floor Flat, 75 Onslow Square, London, SW7 3LS

  LB/26/00514 Submitted 16 Dec 2025 32m away

  Updated internal layout to new bathroom on the first floor

  Granted Heritage and listed buildings 15 docs

• Flat 7, 69 Onslow Square, London, SW7 3LS

  LB/23/06161 Submitted 21 Sep 2023 32m away

  Replacement of existing roof covering with natural Welsh slate tiles to front and rear mansard roof and asphalt to flat section.

  Granted Heritage and listed buildings Loft or dormer Roofing 19 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

  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