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46 Manchester Street London W1U 7LS

23/07149/LBCListed Building Consent ApplicationApproved
Listed building consent

Approved on 5 January 2024

Council decision: Application PermittedDelegated (officer decision)

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

Installation of a conservation rooflight window within the roof central valley to replace the existing dormer. (Linked wth 23/07148/FULL)

Received
13 October 2023
Decision level
Delegated (officer decision)
Public comments
1
Ward
Marylebone
Agent
Garnett Architecture LLP
  1. Received13 Oct
  2. Validated13 Oct
  3. Consult.
  4. Target8 Dec
  5. Decided5 Jan

Decided in 84 days (council typically 49)

About this application

This is a heritage application for a dormer extension at 46 Manchester Street London W1U 7LS. Westminster has handled 2,677 applications of this type. This one was decided in 84 days, 5 weeks longer than Westminster's typical decision time. The site is in the Portman Estate conservation area, with 16 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 171 applications across Marylebone. We hold 1,070 applications in total for the W1U 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
W1U 7LS
Application type
Listed Building Consent Application
Scale / size
Small

Planning application dates

Date validated
13 October 2023
Consultation expiry
29 November 2023
Target decision date
8 December 2023

Applicant and agent

Agent
Garnett Architecture LLP
Agent address
Studio 311 164-180 Union Street London SE1 0LH United Kingdom

Planning decision

Statutory period
56 days

Publicity

Last advertised
8 November 2023
Advertisement expiry
29 November 2023

Additional information

Planning Portal ID
PP-12386026
Documents
18

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

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. 2023
    13 Oct

    Installation of a conservation rooflight window within the roof central valley to replace the existing…

    ApprovedFull Planning Permission ApplicationPart of23/07148/FULL
  2. 2023
    13 Oct

    Installation of a conservation rooflight window within the roof central valley to replace the existing…

    This applicationApprovedListed building consent23/07149/LBC

Source: Westminster

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

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