Planning application
25/07393/ADLBC
18 Seymour Street London W1H 7HU
Proposal
Details of method of waterproofing of the vaults pursuant to condition 7 of planning permission dated 8th August 2023 (RN:23/02367/LBC)
As published by the council, reference 25/07393/ADLBC
Timeline
Dates from the published record
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13 Oct 2025
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 conditions applications
How this application type works
This type of application deals with conditions attached to an existing permission, either by supplying the details a condition requires, called discharging it, or by asking to vary or remove one. It does not reopen the principle of the permission itself. Building often cannot lawfully start, or continue past a set stage, until the named conditions are discharged.
Nearby applications
Within 500 metres
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26/03007/ADLBC Awaiting decision
18 Seymour Street London W1H 7HU
Details of the repairs and upgrading of the rear oriel window pursuant to condition 5 of listed building consent dated 8th August 2023 (RN:23/02367).
-
26/01286/ADLBC Awaiting decision
18 Seymour Street London W1H 7HU
Details of vaults waterproofing method pursuant to Condition 7 of listed building consent dated 8 August 2023 (RN: 23/02367/LBC)
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26/01486/LBC Granted
18 Seymour Street London W1H 7HU
Replacement of the structurally failing front basement lightwell wall, with repair and reinstatement of railings and plinth stones; the introduction of a concealed structural backing wall (Stepoc blocks reinforced with concrete) and a lime-bedded reclaimed brick-facing wall.
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25/06157/LBC Awaiting decision
18 Seymour Street London W1H 7HU
Repair strategy for the preservation of existing ceilings
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25/05696/LBC Granted
Flat 3 20A Seymour Street London W1H 7HX
Layout changes including increasing size of bedroom, relocate bathroom door to create an en-suite, increase size of kitchen and divide box room to the lower floor to create a guest WC and Utility room.
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25/09083/LBC Awaiting decision
20A Seymour Street London W1H 7HX
Installation of replacement sash windows and a replacement skylight within a smaller opening. [Linked with 25/09082/FULL]
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26/04967/ADLBC Withdrawn
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Details of installation of services and related fixtures pursuant to condition 8 (partial) of listed building consent dated 10 June 2025 (RN: 25/01205/LBC)
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26/04860/ADLBC Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Details of external and internal signage strategy pursuant to Condition 7(E) of listed building consent dated 12th February 2021 (RN: 19/07816/LBC)
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26/04843/ADLBC Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Detailed design and specification of new blinds to NZH based on mock-up trials on-site pursuant to Condition 6(m) of listed building consent dated 12th February 2021 (19/07816/LBC).
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26/04998/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Detailed drawings of Bathroom and Kitchen details for apartments 01, 02, 08, 09, 10 and 11 and Reflected ceiling plans for Apartment 1 powder room and bathroom, Apartment 2 powder room and bathrooms, Apartment 8 power room and bathroom, Apartment 9 bathrooms, Apartment 10 bathroom and shower room, and Apartment 11 bathrooms pursuant to partial discharge of conditions 6.3 and 6.10 of listed building consent dated 14th March 2023 (RN: 22/05005/LBC).
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26/04992/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Detailed drawings of wall construction to new apartments pursuant to partial discharge of condition 6.2 of listed building consent dated 14th March 2023 (RN: 22/05005/LBC).