Skip to content

Hallam House 56 - 60 Hallam Street London W1W 6JL

26/01015/FULLFull Planning Permission ApplicationApproved
Full

Approved on 15 May 2026

Site boundary (council red line)

Proposal

Change of use of existing building to form 6 residential flats (Class C3), alterations to rear fenestration pattern, erection of single storey lower ground floor extension within rear lightwell to provide additional residential floorspace (Class C3) and replacement of an existing window with a door at front ground floor level.

Received
17 February 2026
Ward
West End
  1. Received17 Feb
  2. Validated17 Feb
  3. Consult.
  4. Target14 Apr
  5. Decided15 May

Decided in 87 days (council typically 49)

About this application

This is a full planning application for a change of use at Hallam House 56 - 60 Hallam Street London W1W 6JL. Westminster has handled 4,484 applications of this type. This one was decided in 87 days, 5 weeks longer than Westminster's typical decision time. The site is in the Harley Street conservation area, with 5 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 484 applications across West End. We hold 251 applications in total for the W1W 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.See what's approved near your address

Application details

Postcode
W1W 6JL
Application type
Full Planning Permission Application
Scale / size
Small

Planning application dates

Date validated
17 February 2026
Consultation expiry
13 May 2026
Target decision date
14 April 2026

Applicant and agent

Agent
Savills
Agent address
33 Margaret Street London W16 0JD United Kingdom

Planning decision

Statutory period
56 days

Publicity

Last advertised
22 April 2026
Advertisement expiry
13 May 2026
Site notice start
10 April 2026
Site notice end
1 May 2026

Additional information

Planning Portal ID
PP-14697151
Comments
0
Documents
34

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
  • 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.

Planning history at this site

5 other applications at this property, newest first.

  1. 2026
    29 Oct

    Erection of balconies to the rear elevation at first, second, third and fourth-floor levels, and installation…

    PendingApplication26/07297/FULL
  2. 2026
    18 Jun

    Registering address numbering for seven residential units to Hallam House, 60 Hallam Street, London W1W 6JL…

    PendingAll OtherSNN26/00054
  3. 2025
    4 Aug

    Demolition of existing roof plant room and erection of a single floor roof extension to provide one…

    ApprovedFull planning permission25/04301/FULL
  4. 2025
    11 Jun

    Demolition of existing roof plant room and erection of a single floor roof extension above existing building…

    WithdrawnFull planning permission25/03713/FULL
  5. 2025
    16 Jan

    Notification for Prior Approval for the change of use the building to 6 residential apartments (Class C3) in…

    ApprovedApplication25/00247/P3JPA

Source: Westminster

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

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near W1W

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

Consultants on this application

What's been approved on your street?

See what the council approved and refused near this address for the project you have in mind, and the rules that apply here.

Get The Signal Report