15 Upper Wimpole Street London W1G 6LS

26/00654/ADLBCApproval of Details (ADLBC)Approved

Discharge / amendments

Approved on 5 March 2026

Approximate site (title boundary)

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.

Proposal

Details of works to roofs, including leadwork, slating and retention of slate coping to rear vaulted roof; design of new entrance door and mews doors (to be traditional with collinge hinges); paving specs/sample (lightwells/infills); design and materials of new fanlight; works to front lightwell entrance steps, rationalised pipe work, detailed design and materials of glazed lift; relationship of glazed lift to decorative features at each level, confirmation that floorboards will be retained throughout and any new flooring pursuant to Conditions 3 External (2,4,7,8,9 and 10) and Internal (8,9,10 and 11) of listed building consent dated 03 June 2025 (RN25/00869/LBC)

Received: 4 February 2026
Council: City of Westminster
Ward: Marylebone
Agent: Heritage Potential Ltd.

ReceivedReceived4 Feb
ValidatedValidated4 Feb
Consult.Consultation
TargetTarget Date1 Apr
DecidedDecided5 Mar

Decided in 29 days (council typically 49)

About this application

This is an application to discharge conditions at 15 Upper Wimpole Street London W1G 6LS. Westminster has handled 3,063 applications of this type. This one was decided in 29 days, 3 weeks quicker than Westminster's typical decision time. The site is in the Harley Street conservation area, with 12 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.

92% of conditions 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.See what's approved near your address

Application details

Postcode: W1G 6LS
Application type: Approval of Details (ADLBC)
Scale / size: Small

Planning application dates

Date validated: 4 February 2026
Target decision date: 1 April 2026

Applicant and agent

Agent: Heritage Potential Ltd.
Agent address: Magdalen House 148 Tooley Street London SE1 2TU United Kingdom

Planning decision

Statutory period: 56 days

Additional information

Planning Portal ID: PP-14675792
Comments: 0
Documents: 15

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: Harley Street
Listed building: Ground Floor Flat 17 Upper Wimpole Street London W1G 6LROn 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 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

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.

Planning history at this site

9 other applications at this property, newest first.

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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