Skip to content

34, Portland Place, W1B 1LX

26/07465/ADLBCAll OtherAwaiting decision
Discharge / amendments
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

Full details including drawings of the new windows, demonstrating retention of sash boxes pursuant to condition 2 (i) of planning permission dated 15th October 2026 (RN:25/09187/LBC)

Submitted
2 November 2026
  1. Received2 Nov
  2. Validated
  3. Consult.
  4. Target
  5. Decided

About this application

This is a planning application for window replacement at 34, Portland Place, W1B 1LX. Westminster has handled 1,741 applications of this type. It has been with the council since 2 November 2026 and is still awaiting a decision. The site is in the Harley Street conservation area, with 10 listed buildings nearby. There have been 4 other applications at this address. In the past year there have been 469 applications across WEW_22. We hold 372 applications in total for the W1B postcode area.

92% of all other 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
W1B 1LX
Application type
All Other

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*: 56 and 58, Portland Place W1On this site · +4 more
  • 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.

Associated applications

  1. 2026
    2 Nov

    Full details including drawings of the new windows, demonstrating retention of sash boxes pursuant to…

    This applicationPendingAll Other26/07465/ADLBC
  2. 2026
    28 Oct

    Details of samples of the facing materials you will use, including glazing, and elevations and roof plans…

    PendingAll OtherRelated26/07338/ADLBC
  3. 2026
    23 Oct

    Details of full details including drawings of the following parts of the new fireplaces pursuant to condition…

    ApprovedAll OtherRelated26/07309/ADLBC
  4. 2026
    22 Oct

    Details of glazed panels to staircase showing extent of position and method of fixing pursuant to condition 2…

    PendingAll OtherRelated26/07255/ADLBC
  5. 2026
    20 Feb

    Use of 34 Portland Place primarily as the Ambassador's dwellinghouse, use of 73 New Cavendish Street as a…

    ApprovedApplicationRelated25/09186/FULL
  6. 2026
    20 Feb

    Use of 34 Portland Place primarily as the Ambassador's dwellinghouse, use of 73 New Cavendish Street as a…

    ApprovedListed building consentPart of25/09187/LBC

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 W1B

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

Before the decision

You may need a heritage statement. Heritage & archaeology consultants near this site

A listed building is on or next to this site.

See all heritage consultants near Marylebone

Nearest first, within 25 miles of the site. Every firm is listed free.

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