The Dilly 21 Piccadilly London W1J 0BH
Approved on 20 July 2026
Council decision: Application Permitted2 conditions
Proposal
New external roof top plant and new ventilation ductwork to rear elevation. (Linked to 25/08948/FULL)
- Received
- 9 December 2025
- Council
- City of Westminster
- ReceivedReceived9 Dec
- ValidatedValidated24 Feb
- Consult.Consultation
- TargetTarget Date
- DecidedDecided20 Jul
Decided in 146 days
About this application
This is a planning application at The Dilly 21 Piccadilly London W1J 0BH. Westminster has handled 27,140 applications of this type. This one was decided in 146 days, 14 weeks longer than Westminster's typical decision time. The site is in the Regent Street conservation area, with 11 listed buildings nearby. There have been 10 other applications at this address. We hold 940 applications in total for the W1J postcode area.
Application details
- Postcode
- W1J 0BH
Planning application dates
- Date validated
- 24 February 2026
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Regent Street
- 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
- 202624 Feb
New external roof top plant and new ventilation ductwork to rear elevation. (Linked to 25/08949/LBC
ApprovedApplicationPart of25/08948/FULL - 202624 Feb
New external roof top plant and new ventilation ductwork to rear elevation. (Linked to 25/08948/FULL
This applicationApprovedListed building consent25/08949/LBC
Planning history at this site
10 other applications at this property, newest first.
- 20267 Aug
External repair and conservation works to existing facades, pitched and flat roofs, dormers and chimneys…
ApprovedApplication26/05378/FULL - 20267 Aug
External repair and conservation works to existing facades, pitched and flat roofs, dormers and chimneys.
ApprovedListed building consent26/05379/LBC - 202625 Jun
Retrospective strip-out of retail units at 23-26 Piccadilly and basements at 5A Air Street / 67 Regent Street…
ApprovedListed building consent26/04200/LBC - 20265 May
Internal refurbishment of Level 2 lift lobby (Retrospective application).
ApprovedListed building consent26/02808/LBC - 20265 May
Detailed drawings of the existing windows and historic secondary glazing, and the proposed refurbishment…
ApprovedDischarge of conditions26/02953/ADFULL - 20265 May
Detailed drawings of the existing windows and historic secondary glazing, and the proposed refurbishment…
ApprovedDischarge of conditions26/02997/ADLBC - 202628 Jan
Internal works to refurbish the existing ground floor entrance bar and restaurant area
ApprovedListed building consent25/09142/LBC - 202626 Jan
Internal refurbishment and redecoration of 283 guest rooms and corridors, floor levels 1 to 9.
ApprovedListed building consent26/00445/LBC - 20258 Dec
Repair works to existing plaster ceiling in hotel restaurant kitchen.
ApprovedListed building consent25/08908/LBC - 202525 Jul
Update of the MEP infrastructure to include internal works to refurbish the existing internal roof top plant…
ApprovedListed building consent25/04517/LBC
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
- Ground Floor And Mezzanine Floor 69 Regent Street London W1B 4ED26/01306/ADV · AdvertisingApproved0.0 mi
- The Dilly 21 Piccadilly London W1J 0BH26/02953/ADFULL · ConditionsApproved0.0 mi
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For applicants and trades
Contractors near this project
Find contractors for roofing near this site- Avent Roofing ServicesVerifiedWestminsterRoofing0.2 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.0 mi
- Orient Construction Consultancy LimitedVerifiedLondon3.8 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering4.9 mi
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