Planning application
Site At 1 - 15 Portsea Mews London W2 2BN
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Confirmation that the proposed works to the Site would be considered lawful under Section 55 of the Town and Country Planning Act if undertaken, and on completion of the proposed works, would lawfully implement the planning permission dated 29 June 2023 referenced 22/06901/FULL under Section 56 of the Town and Country Planning Act.
As published by the council, reference 26/03502/CLOPUD
Application record
- Reference
- 26/03502/CLOPUD
- Type
- Certificate of Lawfulness (proposed)
- Status
- Pending
- Received
- 28 May 2026
- Validated
- 28 May 2026
- Ward
- Hyde Park
- Postcode
- W2 2BN
Site history
Applications at this address on the Westminster register
This site has had 4 applications since 2026: 2 approved, 0 refused.
-
26/02118/ADFULL Awaiting decision
Site At 1 - 15 Portsea Mews London W2 2BN
Details of report on an archaeological evaluation pusuant to discharge of condition 29 of planning permission dated 2nd December 2024 (RN: 24/05595/FULL).
-
26/01228/ADFULL Granted
Site At 1 - 15 Portsea Mews London W2 2BN
Details of signed appendix A checklist and Construction Management plan pursuant to condition 3 of planning permission dated 2 December 2024 (RN: 24/05595/FULL ).
-
26/01085/ADFULL Granted
Site At 1 - 15 Portsea Mews London W2 2BN
Details of conservation strategy pursuant to Condition 24 of planning permission dated 2 December 2024 (RN: 24/05595/FULL ).
Timeline
Dates from the published record
-
28 May 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 23 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 66 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Newmark LLP Agent
921 applications on PlanIndex · across 40 councils · 97% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
7 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided lawful development applications in a median of 78 days. More in our guide to how long planning decisions take.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
Site At 1 - 15 Portsea Mews London W2 2BN
Details of conservation strategy pursuant to Condition 24 of planning permission dated 2 December 2024 (RN: 24/05595/FULL ).
Granted Full applications 8 docs -
Site At 1 - 15 Portsea Mews London W2 2BN
87% historically approved · decision due ~25 May
Details of report on an archaeological evaluation pusuant to discharge of condition 29 of planning permission dated 2nd December 2024 (RN: 24/05595/FULL).
Awaiting decision Full applications 4 docs -
Site At 1 - 15 Portsea Mews London W2 2BN
Details of signed appendix A checklist and Construction Management plan pursuant to condition 3 of planning permission dated 2 December 2024 (RN: 24/05595/FULL ).
Granted Full applications 10 docs -
10 Connaught Street London W2 2AH
Demolition of non-original rear kitchen extension and reinstatement of rear lightwell at lower ground floor level, installation of boiler enclosure in rear lightwell, replacement of windows to rear elevation and associated external alterations.
Granted Full applications Extension Demolition +1 11 docs -
8 Connaught Street London W2 2AH
Infill below entrance steps, replacement of existing UPVC rear conservatory at first floor level, alterations to existing rear balcony and additional velux to roof.
Granted Full applications Extension Loft or dormer 13 docs -
8 Connaught Street London W2 2AH
Infill below entrance steps, replacement of existing UPVC rear conservatory at first floor level, alterations to existing rear balcony, additional velux to roof and internal alterations.
Granted Heritage and listed buildings Extension Loft or dormer 8 docs
Other lawful development applications
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26/06158/CLOPUD Awaiting decision
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Erection of replacement, enlarged single storey ground floor rear extension.
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26/06080/CLEUD Awaiting decision
91 Gloucester Place London W1U 6JG
Certificate of lawfulness for an existing use or development to confirm that the development authorised by full planning permission ref. 22/08385/FULL & listed building consent (RN 22/08386/LBC) has lawfully commenced as a result of the works evidenced.
-
26/06044/CLOPUD Awaiting decision
9 Abinger Mews W9 3SP
Proposed loft conversion with rear dormer and 3 front rooflights to existing mid-terraced house.
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26/06035/CLOPUD Awaiting decision
30 Ashworth Road W9 1JY
Erection of new garden retaining wall and erection of new garden timber fence to match the height of existing fence.
-
26/05871/CLEUD Awaiting decision
32 Cambridge Street London SW1V 4QH
Confirmation of the lawful implementation of planning permission dated 13 August 2021 (RN: 21/04143/FULL) has commenced before the expiry of the three year time period and may, therefore, lawfully be carried out and completed.