Roxburghe House 273 - 287 Regent Street London W1B 2HA
Proposal
Refurbishment and extension of Roxburghe House and 39 and 40 Margaret Street, including new stair and lift core extension, UKPN substation and the introduction of a rooftop terrace, pavilion and plant enclosure to each building; replacement of windows, shopfronts and new office entrance from Margaret Street and associated ancillary works; and associated works with the use of the buildings as Class E(g) at part basement, part ground floor and upper floors and Class E(a)(b)(c) at part ground and part basement levels. (Linked with 26/05749/LBC)
- Received
- 21 August 2026
- Public comments
- 0 · last counted 2 October 2026
- Council
- City of Westminster
- ReceivedSubmitted21 Aug
- ValidatedValidated21 Aug
- Consult.Consultation
- TargetTarget Date
- DecidedDecided
This is a planning application for an extension at Roxburghe House 273 - 287 Regent Street London W1B 2HA. 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 August 2026 and is still awaiting a decision. The site is in the Regent Street conservation area, with 8 listed buildings nearby. There has been 1 other application 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 Aug
Refurbishment and extension of Roxburghe House and 39 and 40 Margaret Street, including new stair and lift…
This applicationPendingApplication26/05748/FULL - 202621 Aug
Refurbishment and extension of Roxburghe House and (unlisted) 39 and 40 Margaret Street, including new stair…
PendingListed building consentPart of26/05749/LBC
Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Regent Street
- Listed building: Grade II: 273, 275, 275A AND 281A, REGENT STREET W1 (See details for further address information)On this site · +1 more
- 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 2026-10-09. 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.
- 0.2 miLondonRTPIRICS Regulated
- 0.3 miLondonRTPI
- 0.4 miLondonRTPI
Nearest first, within 25 miles of the site. Every firm is listed free.
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