33 Glasshouse Street London W1B 5DG
Proposal
External alterations at sixth floor roof level, including the removal of the existing plant room roof and enlargement of existing openings to create amenity terraces, together with the formation of a new door and windows to the Cupola room on the Glasshouse Street elevation. Installation of an external decking system with integrated balustrades, planters and seating, and other associated works. (Linked to 26/06458/LBC)
- Received
- 21 September 2026
- Public comments
- 0 · last counted 6 October 2026
- Council
- City of Westminster
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.
- ReceivedSubmitted21 Sep
- ValidatedValidated21 Sep
- Consult.Consultation
- TargetTarget Date
- DecidedDecided
This is a planning application for window replacement at 33 Glasshouse Street London W1B 5DG. Westminster has handled 26,489 applications of this type and approves 88% of them, typically deciding them in 54 days. It was submitted on 21 September 2026 and is still awaiting a decision. The site is in the Regent Street conservation area, with 9 listed buildings nearby. There have been 2 other applications at this address. We hold 356 applications in total for the W1B postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Associated applications
- 202621 Sep
External alterations at sixth floor roof level, including the removal of the existing plant room roof and…
This applicationPendingApplication26/06457/FULL - 202621 Sep
External alterations at sixth floor roof level, including the removal of the existing plant room roof and…
PendingListed building consentPart of26/06458/LBC
Planning history at this site
1 other application at this property, newest first.
Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Regent Street
- Listed building: Second Floor 84 - 86 Regent Street London W1B 5RROn or next to this 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 (22)
flood storage areas, listed buildings, 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 2026-10-09. 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.
Before the decision
You may need a heritage statement. Heritage & archaeology consultants near this site
A listed building is on or next to this site.
- 0.5 miLondonRTPIRICS Regulated
- 0.5 miLondonRTPI
- 0.7 miLondonRTPI
Nearest first, within 25 miles of the site. Every firm is listed free.
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