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43 Welbeck Street London W1G 8DX

26/02956/LBCListed Building Consent ApplicationApproved
Listed building consent

Approved on 14 July 2026

3 conditions

Site boundary (council red line)

Proposal

Alterations to the existing building to provide dual Office (Class E (g) and Healthcare (Class E (e)) floorspace at lower ground to third floor, comprising, rear extension and retrofit of existing outrigger and extension at lower-ground and first floor, internal alterations, creation of terraces and replacement and installation of external plant. (Linked to 26/02955/FULL)

Received
5 May 2026
Ward
Marylebone
Agent
Howard de Walden Estates Limited
  1. Received5 May
  2. Validated5 May
  3. Consult.
  4. Target30 Jun
  5. Decided14 Jul

Decided in 70 days (council typically 49)

About this application

This is a heritage application for a rear extension at 43 Welbeck Street London W1G 8DX. Westminster has handled 2,677 applications of this type. This one was decided in 70 days, 3 weeks longer than Westminster's typical decision time. The site is in the Harley Street conservation area, with 18 listed buildings nearby. There has been 1 other application 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.

93% of heritage 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 8DX
Application type
Listed Building Consent Application
Scale / size
Small

Planning application dates

Date validated
5 May 2026
Target decision date
30 June 2026

Applicant and agent

Agent
Howard de Walden Estates Limited
Agent address
23 Queen Anne Street London W1G 9DL

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14872097
Comments
0
Documents
30

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: 43-45, Welbeck Street W1On 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.

Associated applications

  1. 2026
    5 May

    Alterations to the existing building to provide dual Office (Class E (g) and Healthcare (Class E (e))…

    ApprovedFull Planning Permission ApplicationPart of26/02955/FULL
  2. 2026
    5 May

    Alterations to the existing building to provide dual Office (Class E (g) and Healthcare (Class E (e))…

    This applicationApprovedListed building consent26/02956/LBC

Source: Westminster

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

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