26/01173/CLOPUD

1. 24 Feb 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

• 26/01398/ADFULL Awaiting decision

  Second Floor 16 Conduit Street London W1S 2XL

  Details of waste storage arrangements pursuant to Condition 5 of the planning permission dated 7 June 2016 (RN: 15/06533/FULL)

  4 Mar 2026 2m away Full applications
• 26/01480/NMA Awaiting decision

  Second Floor 16 Conduit Street London W1S 2XL

  Amendment of planning permission dated 7 June 2016 (RN: 15/06533/FULL) for 'Dual/alternative use of the second floor for either office (Class B1a) or residential (Class C3) use (1 x 2 bedroom unit). Installation of 4 x external grilles at second floor level on the Mill Street elevation and 1 x external grille on Conduit Street elevation'. NAMELY to vary the wording of Condition 6 to allow the implementation of an alternative ventilation strategy.

  9 Mar 2026 2m away Amendments
• 26/02839/ADFULL Awaiting decision

  6 - 8 Mill Street London W1S 2AZ

  Detailed drawings of the fixed glazed awning and retractable awning pursuant to condition 3 of planning permission dated 17th March 2026 (RN: 25/06233/FULL).

  29 Apr 2026 12m away Full applications
• 26/02841/FULL Awaiting decision

  Sofia House 19 Conduit Street London W1S 2BH

  Erection of five storey rear extension including extension of lower ground floor, roof level alterations, including new dormers and extension to rear, installation of plant and alterations associated with refurbishment of building

  29 Apr 2026 21m away Full applications
• 25/05998/FULL Granted

  4 Mill Street London W1S 2AX

  Erection of a rear roof extension at third floor level with a sedum roof to the rear; replacement of windows at second floor level with double glazing timber windows; replacement of door and window to the existing rear first floor extension with double glazing timber windows including replacement of roofing; and associated works all in connection with the use of the first to third floor as four flats (Class C3)

  22 Aug 2025 24m away Full applications
• 26/02022/FULL Awaiting decision

  20 Conduit Street London W1S 2XW

  Installation of two conservation style rooflights at roof level, installation of one rear casement window at fifth floor level, replacement of existing maintenance access door with new glazed door, replacement of damaged roof tiles and installation of insulation; and removal and installation of two new MVHR extract and intake roof cowls. (Linked to 26/02023/LBC)

  26 Mar 2026 25m 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