16, Conduit Street, W1S 2XL
Refused on 7 April 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
Amendment of planning permission dated 7 June 2016 (RN: 15/06533/FULL) for 'Dual/alternative use of the second floor for either office (Class B1a) or residential (Class C3) use (1 x 2 bedroom unit). Installation of 4 x external grilles at second floor level on the Mill Street elevation and 1 x external grille on Conduit Street elevation'. NAMELY to vary the wording of Condition 6 to allow the implementation of an alternative ventilation strategy.
- Submitted
- 9 March 2026
- Council
- City of Westminster
- ReceivedSubmitted9 Mar
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided7 Apr
Decided in 29 days (council typically 49)
About this application
This is a planning application at 16, Conduit Street, W1S 2XL. Westminster has handled 230 applications of this type. This one was decided in 29 days, 3 weeks quicker than Westminster's typical decision time. The site is in the Mayfair conservation area, with 13 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 469 applications across WEW_22. We hold 791 applications in total for the W1S postcode area.
86% of non-material amendment applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).
Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street
Application details
- Postcode
- W1S 2XL
- Application type
- Non-Material Amendment
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Mayfair
- 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.
Planning history at this site
2 other applications at this property, newest first.
- 20264 Mar
Details of waste storage arrangements pursuant to Condition 5 of the planning permission dated 7 June 2016…
ApprovedDischarge of conditions26/01398/ADFULL - 202624 Feb
Confirmation of the lawfulness of the proposed residential use on the second floor of the property, in line…
ApprovedApplication26/01173/CLOPUD
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
Track this application
Get email alerts when there is a planning decision or status change.
Get email alerts near W1S
New planning applications delivered to your inbox daily.
Around this site
Nearby applications
- Second Floor 16 Conduit Street London W1S 2XL26/01398/ADFULL · ConditionsApproved0.0 mi
- 38 Maddox Street London W1S 1PY25/06924/ADV · AdvertisingApproved0.0 mi
- 43 Conduit Street London W1S 2YJ24/05311/FULL · FullAwaiting decision0.0 mi
- 42 Conduit Street London W1S 2YH25/05050/ADLBC · ConditionsRefused0.0 mi
- 42 Conduit Street London W1S 2YH24/06614/ADFULL · ConditionsRefused0.0 mi
For applicants and trades
Contractors near this project
Find contractors for commercial fit-out near this site- Avent Roofing ServicesVerifiedWestminsterRoofing0.3 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman0.8 mi
- Orient Construction Consultancy LimitedVerifiedLondon3.9 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering5.1 mi
Planning something similar?
See what the council approved and refused on your street for the project you have in mind. Pick your home and get the evidence before you pay for drawings.