Skip to content

91-93 Baker Street London W1U 6RL

18/05488/FULLApplication for full Planning PermissionApproved
Full

Approved on 8 August 2018

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

Creation of new fifth floor terrace for use in association with office (Class B1) floorspace on upper floor of building, installation of new access doors and modification to height of existing guarding.

Received
29 June 2018
Decision level
Delegated (officer decision)
Ward
Marylebone High Street
Agent
Trehearne Architects
  1. Received29 Jun
  2. Validated29 Jun
  3. Consult.
  4. Target24 Aug
  5. Decided8 Aug

Decided in 40 days (council typically 49)

About this application

This is a full planning application at 91-93 Baker Street London W1U 6RL. Westminster has handled 4,484 applications of this type. This one was decided in 40 days, 9 days quicker than Westminster's typical decision time. The site is in the Portman Estate conservation area, with 4 listed buildings nearby. There has been 1 other application at this address. We hold 1,070 applications in total for the W1U 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
W1U 6RL
Application type
Application for full Planning Permission
Scale / size
Small

Planning application dates

Date validated
29 June 2018
Consultation expiry
3 August 2018
Target decision date
24 August 2018

Applicant and agent

Agent
Trehearne Architects
Agent address
33 High Holborn London WC1V 6AX

Planning decision

Statutory period
56 days

Publicity

Last advertised
13 July 2018
Advertisement expiry
3 August 2018
Site notice start
6 July 2018
Site notice end
27 July 2018

Additional information

Planning Portal ID
PP-07088302
Comments
0
Documents
20

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Portman Estate
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

flood storage areas, listed buildings, 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. 2018
    29 Jun

    Alterations to the existing ground floor shopfronts including the introduction of a new office (Class B1)…

    ApprovedApplication for full Planning PermissionFiled alongside18/05487/FULL
  2. 2018
    29 Jun

    Creation of new fifth floor terrace for use in association with office (Class B1) floorspace on upper floor…

    This applicationApprovedFull18/05488/FULL

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 W1U

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

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