1 Marylebone Street London W1G 8JA
Approved on 30 April 2026
Proposal
Installation of an air source heat pump within the external courtyard of the rear, lower ground floor level of the building.
- Received
- 7 November 2025
- Council
- City of Westminster
- Ward
- Marylebone
- ReceivedReceived7 Nov
- ValidatedValidated7 Nov
- Consult.Consultation
- TargetTarget Date2 Jan
- DecidedDecided30 Apr
Decided in 174 days (council typically 49)
About this application
This is a full planning application at 1 Marylebone Street London W1G 8JA. Westminster has handled 4,484 applications of this type. This one was decided in 174 days, 18 weeks longer than Westminster's typical decision time. The site is in the Harley Street conservation area, with 3 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 171 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 8JA
- Application type
- Full Planning Permission Application
- Scale / size
- Small
Planning application dates
- Date validated
- 7 November 2025
- Target decision date
- 2 January 2026
Applicant and agent
- Agent
- The Howard De Walden Estate
- Agent address
- 23 Queen Anne Street London W1G9DL United Kingdom
Planning decision
- Statutory period
- 56 days
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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For applicants and trades
Contractors near this project
Find contractors for plumbing & heating near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman0.6 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing0.8 mi
- Orient Construction Consultancy LimitedVerifiedLondon3.9 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering5.6 mi
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