56, 60, Hallam Street, W1W 6JL

25/04301/FULLFull planning permissionApproved

Full

Approved on 19 November 2025

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

Demolition of existing roof plant room and erection of a single floor roof extension to provide one residential unit (Class C3). Erection of replacement plant room, and provision of an external terrace, landscaping and green roof. Alterations to rear fenestration pattern. Erection of single storey lower ground floor extension within rear lightwell to provide additional office floorspace (Class E) and replacement of a window with a door at front ground floor level.

Submitted: 4 August 2025
Council: City of Westminster

ReceivedSubmitted4 Aug
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided19 Nov

Decided in 107 days (council typically 49)

About this application

This is a planning application for demolition at 56, 60, Hallam Street, W1W 6JL. Westminster has handled 804 applications of this type. This one was decided in 107 days, 8 weeks longer than Westminster's typical decision time. The site is in the Harley Street conservation area, with 6 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 465 applications across WEW_22. We hold 251 applications in total for the W1W postcode area.

84% of full planning permission 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: W1W 6JL
Application type: Full planning permission

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: Harley Street
Listed building: Grade II: General Medical CouncilOn 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 (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.

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.

Associated applications

2026
11 Feb
Details of appropriate arrangements to secure measures to mitigate the potential increased demand for…
PendingDischarge of conditions26/00826/ADFULL
2025
4 Aug
Demolition of existing roof plant room and erection of a single floor roof extension to provide one…
This applicationApprovedFull planning permission25/04301/FULL

Planning history at this site

6 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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