25/09190/CLEUD

1. 19 Dec 2025

   Received by Westminster

2. 20 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 25/09153/LBC Awaiting decision

  2 Harley Street London W1G 9PB

  Installation of external condenser unit in the rear lightwell and fan coil units to the first floor with associated pipework and decorative heritage panelling. (linked to 25/09152/FULL).

  18 Dec 2025 2m away Heritage and listed buildings
• 25/09152/FULL Awaiting decision

  2 Harley Street London W1G 9PB

  Installation of external condenser unit in the rear lightwell. (linked to 25/09153/LBC)

  18 Dec 2025 2m away Full applications
• 25/07886/FULL Awaiting decision

  14 Cavendish Square London W1G 9DB

  Refurbishment of 14 Cavendish Square, including modest internal and external alterations, and amendments to use comprising the re-location of a residential unit (Class C3) and increased museum floorspace (Class F1). (Linked to 25/07887/LBC)

  30 Oct 2025 21m away Full applications
• 26/04714/ADLBC Awaiting decision

  14 Cavendish Square London W1G 9DB

  Detailed drawings of the sliding roof lights above stair leading to roof terrace showing adjoining fabric and key details and detailed study and drawings of the roof light over the stair and its relationship to the existing decorative plasterwork pursuant to condition 3 (5) and (8) of listed building dated 11th March 2026 (RN:25/07887/LBC)

  14 Jul 2026 24m away Conditions
• 25/07887/LBC Awaiting decision

  14 Cavendish Square London W1G 9DB

  Refurbishment of 14 Cavendish Square, including modest internal and external alterations, and amendments to use comprising the re-location of a residential unit (Class C3) and increased museum floorspace (Class F1). (Linked to 25/07886/FULL)

  30 Oct 2025 24m away Heritage and listed buildings
• 25/05407/ADFULL Granted

  14 Cavendish Square London W1G 9DB

  Details of an Operational Management Plan pursuant to Condition 3 of planning permission dated 9th April 2025 (RN: 25/00722/FULL)

  1 Aug 2025 24m away Full applications

• 26/04958/CLEUD Awaiting decision

  1 Sussex Square London W2 2SJ

  Use of a building as mixed use as C3 (single residential dwelling) and C1 (short-stay accommodation)

  24 Jul 2026 Lawful development
• 26/04971/CLOPUD Awaiting decision

  Flat 23 192 Emery Hill Street London SW1P 1PN

  Replacement of the existing single-glazed moving window sashes, casement panels, and balcony door leaves with slimline double-glazed timber units. The existing outer timber frames fixed into the building will be retained and will not be removed or altered. The replacement units will match the existing windows in material, design, glazing bar pattern, opening method, dimensions, and external appearance. No alterations are proposed to the building structure, external walls, openings, or window frame sizes. No new access, alterations to existing access, new streets, hardstandings, means of enclosure, or drainage works are proposed. The precise location and details of the replacement windows are shown on the accompanying drawings.

  24 Jul 2026 Lawful development
• 26/04832/CLEUD Awaiting decision

  Basement Flat 117 Kilburn Park Road London NW6 5LB

  Use or Development in respect of the detached single-storey outbuilding within the rear garden of the applicants property.

  20 Jul 2026 Lawful development
• 26/04856/CLOPUD Awaiting decision

  Flat 15 192 Emery Hill Street London SW1P 1PN

  Replacement of the existing single-glazed moving sashes, casement panels, and balcony door leafs with slimline double glazed timber units within the fully retained existing external timber frames.

  20 Jul 2026 Lawful development
• 26/04632/CLOPUD Awaiting decision

  165 Oliphant Street London W10 4EA

  Installation of solar panels to generate clean, renewable energy from sunlight and reduce reliance on grid electricity and fossil fuels.

  10 Jul 2026 Lawful development