Planning application
26/01022/CLEUD
Flat 4 9 Welbeck Street London W1G 9YB
Proposal
Confirmation that the existing roof terrace above the fifth floor and its associated access/features, the external air conditioning unit at the rear of the property at fourth floor level, and the PVC windows to the front of the property at fourth and fifth floor levels are lawful.
As published by the council, reference 26/01022/CLEUD
Timeline
Dates from the published record
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17 Feb 2026
Received by Westminster
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21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
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.
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.
Nearby applications
Within 500 metres
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26/00465/FULL Awaiting decision
21 - 22 Welbeck Way London W1G 9YW
Installation of 2 x condenser units roof level, including external grid deck for plant access and mounting.
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25/06854/FULL Granted
36 Wigmore Street London W1U 2BP
Installation of two air conditioning units located on existing roof plant deck, concealed behind an existing plant screen.
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25/06855/LBC Awaiting decision
36 Wigmore Street London W1U 2BP
Installation of two air conditioning units located on existing roof plant deck, concealed behind an existing plant screen. Linked with 25/06854/FULL
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26/04698/FULL Awaiting decision
57 - 59 Welbeck Street London W1G 9BL
Installation of new flue to the rear elevation
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26/02246/ADV Awaiting decision
30 Wigmore Street London W1U 2RW
Display of an internally illuminated fascia sign measuring 0.65m x 3.971m.
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26/02773/ADLBC Granted
17 Welbeck Street London W1G 9XJ
Detailed drawings (scale 1:20 and 1:5) of the new doors, with key details and locations, including labelled and located photographs of existing to be replaced pursuant to condition 4 of listed building consent dated 3rd March 2026 (RN: 25/06438/LBC)
Other lawful development applications
In Westminster
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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)
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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.
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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.
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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.
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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.