26/03437/CLEUD

1. 26 May 2026

   Received by Westminster

2. 21 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

• 26/04071/ADFULL Awaiting decision

  6 Upper Wimpole Street London W1G 6LG

  Details of tree report; pursuant to Condition 6 (Part 1) of Appeal Decision APP/X5990/W/25/3371070, dated 22nd December 2025,

  19 Jun 2026 12m away Full applications
• 26/03644/LBC Awaiting decision

  6 Upper Wimpole Street London W1G 6LG

  Installation of an automatic fire suppression (sprinkler) system.

  4 Jun 2026 12m away Heritage and listed buildings
• 11/05045/FULL Granted

  9 Upper Wimpole Street London W1G 6LJ

  Use of lower ground floor level for medical purposes (Class D1), installation of air conditioning unit in rear lower ground floor courtyard and one under the front lightwell staircase.

  26 May 2011 15m away Full applications
• 11/05046/LBC Granted

  9 Upper Wimpole Street London W1G 6LJ

  Use of lower ground floor level for medical purposes (Class D1) in association with internal alterations and the installation of air conditioning unit in rear lower ground floor courtyard. (part of land use swap with 122 Harley Street, 134 Harley Street, 40 Harley Street and 52 Harley Street).

  26 May 2011 15m away Heritage and listed buildings
• 11/00772/LBC Withdrawn

  9 Upper Wimpole Street London W1G 6LJ

  Internal alterations at lower ground floor

  27 Jan 2011 15m away Heritage and listed buildings
• 13/01665/AD7 Granted

  9 Upper Wimpole Street London W1G 6LJ

  Display for a temporary period of six months of a non illuminated 'to let' board attached to the railings at the front of the building at street level and measuring 0.6m x 0.45m.

  22 Feb 2013 15m away Advertising

• 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