64 Wimpole Street London W1G 8YS
Approved on 17 September 2026
Proposal
Erection of a new roof terrace and green roof area at rear 2nd floor level; installation of plant and photovoltaic panels at main roof level and new mansard roof extension and installation of plant on the mews roof level; alterations at ground floor front elevation; Internal and external alterations throughout the building in connection with a rear elevation extension from first to fourth floor levels and the reconfiguration of the existing fifth floor level, installation of new double glazed windows throughout all in connection with a change of use to Class E (e) medical use.
- Received
- 18 March 2026
- Public comments
- 1
- Council
- City of Westminster
- Ward
- Marylebone
- Agent
- Howard de Walden Estates ltd
- ReceivedReceived18 Mar
- ValidatedValidated18 Mar
- Consult.Consultation
- TargetTarget Date13 May
- DecidedDecided17 Sep
Decided in 183 days (council typically 49)
About this application
This is a full planning application for a change of use at 64 Wimpole Street London W1G 8YS. Westminster has handled 4,484 applications of this type. This one was decided in 183 days, 19 weeks longer than Westminster's typical decision time. The site is in the Harley Street conservation area, with 20 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 168 applications across Marylebone. We hold 590 applications in total for the W1G postcode area.
86% of full 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
- W1G 8YS
- Application type
- Full Planning Permission Application
- Scale / size
- Small
Planning application dates
- Date validated
- 18 March 2026
- Consultation expiry
- 22 April 2026
- Target decision date
- 13 May 2026
Applicant and agent
- Agent
- Howard de Walden Estates ltd
- Agent address
- 23 Queen Anne Street London W1G 9DL United Kingdom
Planning decision
- Statutory period
- 56 days
Publicity
- Last advertised
- 1 April 2026
- Advertisement expiry
- 22 April 2026
- Site notice start
- 24 March 2026
- Site notice end
- 14 April 2026
Additional information
- Planning Portal ID
- PP-14690892
- Documents
- 88
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Harley 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.
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
- 61 Wimpole Street London W1G 8AW23/04840/FULL · FullApproved0.0 mi
- 20 Wimpole Street London W1G 8GF25/06320/ADFULL · ConditionsApproved0.0 mi
- 29 Welbeck Street London W1G 8EP25/00328/AD7 · AdvertisingApproved0.0 mi
- 18 Wimpole Street London W1G 8GD24/06093/LBC · HeritageAwaiting decision0.0 mi
- 56 Queen Anne Street London W1G 8LA23/01155/ADFULL · ConditionsApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman0.5 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing0.8 mi
- Orient Construction Consultancy LimitedVerifiedLondon3.8 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering5.6 mi
Planning something similar?
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