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Planning application

09/07544/CLOPUD

18 Upper Wimpole Street London W1G 6LX

Granted Westminster Certificate of Lawfulness (proposed)

Proposal

Use of the second, third and fourth floors as a maisonette (Class C3) and associated internal alterations.

As published by the council, reference 09/07544/CLOPUD

Timeline

Dates from the published record

  1. 17 Sep 2009

    Received by Westminster

  2. 6 Nov 2009

    Decision issued: Application Permitted

  3. 29 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About lawful development applications

How this application type works

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

Nearby applications

Within 500 metres

  • 07/09824/LBC Withdrawn

    18 Upper Wimpole Street London W1G 6LX

    Internal alterations associated with the use of the property as a single family dwelling.

    12 Nov 2007 0m away Heritage and listed buildings
  • 07/09823/FULL Withdrawn

    18 Upper Wimpole Street London W1G 6LX

    Use of ground and first floor of 18 Upper Wimpole Street as residential accommodation in connection with the use of the building as a single dwelling house. (Part of land use swap with 110 Harley Street).

    12 Nov 2007 0m away Full applications
  • 09/10438/LBC Granted

    18 Upper Wimpole Street London W1G 6LX

    Internal alterations at basement ground and first floor levels and external alterations including replacement windows to rear elevation and removal of rear extension at second floor level.

    22 Dec 2009 0m away Heritage and listed buildings
  • 12/09191/ADLBC Granted

    18 Upper Wimpole Street London W1G 6LX

    Approval of details pursuant to Condition 1 of listed building consent dated 21 June 2010 (RN: 10/03535), namely the submission of detailed drawings of all new doors, windows and decorative joinery or plasterwork including skirtings, balustrades, dados and cornicing.

    11 Sep 2012 0m away Conditions
  • 12/09192/ADFULL Granted

    18 Upper Wimpole Street London W1G 6LX

    Approval of details pursuant to Condition 2 of planning permission dated 21 June 2010 (RN: 10/03534), namely the submission of details drawings to show all new windows and doors.

    11 Sep 2012 0m away Full applications
  • 05/01730/AD7 Refused

    18 Upper Wimpole Street London W1G 6LX

    Display for a temporary period of 6 months of a non-illuminated 'to let' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.

    8 Mar 2005 0m away Advertising

In Westminster

  • 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