18 Seymour Street London W1H 7HU
Approved on 13 August 2026
Boundary © HM Land Registry, © Ordnance Survey · details
This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.
Proposal
Details of new vault doors pursuant to condition 3 of listed building consent dated 01 April 2026 (RN: 26/01486/LBC)
- Submitted
- 30 July 2026
- Council
- City of Westminster
- ReceivedSubmitted30 Jul
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided13 Aug
Decided in 14 days
About this application
This is a planning application at 18 Seymour Street London W1H 7HU. Westminster has handled 27,108 applications of this type. This one was decided in 14 days, 5 weeks quicker than Westminster's typical decision time. The site is in the Portman Estate conservation area, with 13 listed buildings nearby. There have been 6 other applications at this address. We hold 896 applications in total for the W1H postcode area.
Application details
- Postcode
- W1H 7HU
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Portman EstatePart of the site
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)
flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.
A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.
Data © Crown copyright and others · sources and licences
Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.
© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.
© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.
© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.
Contains Ordnance Survey data © Crown copyright and database right 2026.
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.
Associated applications
- 202630 Jul
Details of new vault doors pursuant to condition 3 of listed building consent dated 01 April 2026 (RN…
This applicationApprovedListed building consent26/05164/ADLBC - 20269 Mar
Replacement of the structurally failing front basement lightwell wall, with repair and reinstatement of…
ApprovedListed building consentPart of26/01486/LBC - 20262 Mar
Details of vaults waterproofing method pursuant to Condition 7 of listed building consent dated 8 August 2023…
ApprovedListed building consentFiled alongside26/01286/ADLBC
Planning history at this site
12 other applications at this property, newest first.
- 202627 Jul
Installation of external lighting to the front entrance and front basement lightwell, entry touch panel and…
ApprovedApplication26/05009/FULL - 202627 Jul
Installation of external lighting to the front entrance and front basement lightwell, entry touch panel and…
ApprovedListed building consent26/05010/LBC - 202622 Jul
Installation of external lighting to the front entrance and front basement lightwell, along with an entry…
PendingListed building consent26/04849/LBC - 20267 May
Details of the repairs and upgrading of the rear oriel window pursuant to condition 5 of listed building…
ApprovedListed building consent26/03007/ADLBC - 202513 Oct
Details of method of waterproofing of the vaults pursuant to Condition 7 of listed building consent dated 8th…
RefusedListed building consent25/07393/ADLBC - 202529 Aug
Repair strategy for the preservation of existing ceilings at 18 Seymour Street
WithdrawnListed building consent25/06157/LBC - 20251 Jul
Detailed drawings of all new windows, also design of the re-covering of front entrance steps and replacement…
ApprovedDischarge of conditions25/04494/ADFULL - 202527 Jun
Details of a door schedule including photo and location of each door pursuant to condition 3 of listed…
ApprovedListed building consent25/04422/ADLBC - 202518 Jun
Details of the detail design, size and location of the new fire surrounds, ceiling roses, skirtings and…
ApprovedDischarge of conditions25/04170/ADLBC - 202521 May
Internal alterations at third floor level.
ApprovedListed building consent25/02792/LBC - 202521 May
Amendments to planning permission dated 8th August 2023 (RN: 23/02366/FULL
ApprovedNon-material amendment25/02791/NMA - 202415 Mar
Amendments to planning permission dated 08 August 2023 (RN: 23/02366/FULL
ApprovedNon-material amendment24/01715/NMA
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Around this site
Nearby applications
- 18 Seymour Street London W1H 7HU24/01715/NMA · AmendmentApproved0.0 mi
- 18 Seymour Street London W1H 7HU26/03007/ADLBC · ConditionsApproved0.0 mi
- 18 Seymour Street London W1H 7HU26/01286/ADLBC · ConditionsApproved0.0 mi
- Flat 3 20A Seymour Street London W1H 7HX25/05696/LBC · HeritageApproved0.0 mi
- 1 New Quebec Street London W1H 7DD25/07016/LBC · HeritageApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for windows & doors near this site- Avent Roofing ServicesVerifiedWestminsterRoofing0.9 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.0 mi
- Orient Construction Consultancy LimitedVerifiedLondon4.3 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering5.4 mi
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