Flat 8, 20 Onslow Square, London, SW7 3NP

This site has had 2 applications since 2026.

• PP/26/03137 Awaiting decision

  Flat 8, 20 Onslow Square, London, SW7 3NP

  General refurbishment of flat, minimal layout and non-original fabric changes, replacement of windows and installation of an AC condenser on existing terrace.

  Submitted 12 Jun 2026 Full applications

1. 12 Jun 2026

   Received by Kensington and Chelsea

2. 20 Jul 2026

   Added to PlanIndex

3. 10 Aug 2026

   Status changed to Pre-Determination Stage

   Previously Validated and Registered.

4. Decision

   Awaiting decision

   Decision expected by 7 August 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 heritage and listed building applications in a median of 120 days. More in our guide to how long planning decisions take.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• Flat 8, 20 Onslow Square, London, SW7 3NP

  PP/26/03137 Submitted 12 Jun 2026 50 yards away

  94% historically approved · decision due ~7 Aug

  General refurbishment of flat, minimal layout and non-original fabric changes, replacement of windows and installation of an AC condenser on existing terrace.

  Awaiting decision Full applications Windows or glazing 17 docs

• 2-42 Onslow Square, London, SW7 3NP

  ARB/24/05608 Submitted 15 Aug 2024 50 yards away

  Prune 1 x Catalpa bignonioides (Indian Bean Tree) rear of 18 Onslow Square

  Granted Trees 7 docs

• 2 Onslow Square, London, SW7 3NP

  ARB/21/04228 Submitted 29 Jun 2021 50 yards away

  Pruning 1 x Indian Bean Tree.

  Granted Trees 4 docs

• 2 Sydney Place, London, SW7 3NN

  PP/25/05502 Submitted 10 Sep 2025 50 yards away

  Installation of air conditioning units to rear elevation

  Refused Full applications 17 docs

• 2 Sydney Place, London, SW7 3NN

  LB/25/05503 Submitted 10 Sep 2025 50 yards away

  Installation of air conditioning units to rear elevation

  Refused Heritage and listed buildings 6 docs

• 5 Sydney Place, London, SW7 3NN

  ARB/23/07564 Submitted 16 Nov 2023 50 yards away

  Prune x 1 silver birch (rear)

  Granted Trees 8 docs

• LB/26/03098 Granted

  14 Holland Street, London, W8 4LT

  Removal on non-original furniture, fixtures and fittings. Installation of new coffee shop to include new floor finish over existing screed floor (floor boards retained), new light fittings, new coffee counter, plumbing and services. Limited refurbishment to shop front such as painting and new sign in place of existing.

  Received 10 Jun, published by the council 20 Jul 2026 Heritage and listed buildings
• LB/26/02918 Granted

  220 and 222 Earl's Court Road, London, SW5 9QA

  Proposed installation of roof top plant and internal alterations

  Received 2 Jun, published by the council 20 Jul 2026 Heritage and listed buildings
• LB/26/02796 Granted

  Flat 8, 89 Onslow Square, London, SW7 3LT

  Strip out entire property for a full refurbishment to include blocking up one entrance into the sitting room, supply and fit new kitchen and appliances, plumb in 2x new bathrooms, supply and fit new radiators where necessary, re-decorate entire property; supply and lay wooden floor in hallway with acoustic insulation.

  Received 26 May, published by the council 1 Aug 2026 Heritage and listed buildings
• LB/26/02366 Withdrawn

  10 Palace Gate, London, W8 5NF

  Replacement of exsiting defective internal rainwater downpipe.(Retrospective Application)

  Received 27 Apr, published by the council 20 Jul 2026 Heritage and listed buildings
• LB/26/02248 Withdrawn

  41 Halsey Street, London, SW3 2PT

  Refinements to lower ground floor conservatory and basement extension through removal of low external wall, installation of full height sliding doors, and reinstatement of larger external steps. Replace glazed flat roof at ground floor level with glass-box extension incorporating solid floor structure and internal walk on rooflight. Installation of glazed sliding doors out to a Juliet balcony with metal railings balustrade. Create access from living room by lowering sill of window to form archway; Single-storey extension to closet wing, aligning depth with No.?40 Halsey Street. New timber-framed glazed doors to the rear of extended wing. Widening opening to half-level study within partition to accommodate new double doors. Sunroom will include full-height sliding doors and Juliet balcony with painted or PPC metal balustrades.

  Received 20 Apr, published by the council 20 Jul 2026 Heritage and listed buildings