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126 - 134 Baker Street London W1U 6SH

24/04852/FULLFull Planning Permission ApplicationPending Decision
Full

Proposal

Use of first floor level as Class C3 to provide new residential accommodation and from Class E to Class C3 at ground floor level to allow reconfigured retail unit and residential entrance with internal cycle store; external alterations to the western (front) elevation to create reconfigured retail unit frontage and residential entrance with projecting render feature above; creation of ground floor residents cycle stores and replacement of obsolete fire escape door to western (front) elevation with new entrance door to one of the residents' cycle stores; relocation of fenestration at first floor level to eastern elevation; replacement of three windows at second, third and fourth floor level of eastern elevation with full height windows with Juliet balconies; replacement of all other windows to eastern, western and southern and elevations with new windows; replacement of render finish to western, eastern and southern elevation; alteration of three existing flues to rear elevation; and works at roof level compromising removal of redundant stair cores and plant rooms and erection of single storey extension at roof level to provide new residential accommodation in Class C3 encompassing extension of existing rear staircore by one storey to allow access to new fifth floor and to plant rooms at new roof level, alteration to design and extent of roof safety railing, provision of photovoltaic panels and green roof at new roof level, and removal of obsolete existing roof ladder.

Received
17 July 2024
Target decision date
11 September 2024
Ward
Marylebone
Approximate location: the centre of the postcode, not the exact property.
  1. Received17 Jul
  2. Validated17 Jul
  3. Consult.
  4. Target11 Sep
  5. Decided
7 weeks typical decision time in Westminster86% of full applications approved

This is a full planning application for an extension at 126 - 134 Baker Street London W1U 6SH. Westminster has handled 4,496 applications of this type and approves 85% of them, typically deciding them in 74 days. It was submitted on 17 July 2024 and is still awaiting a decision. The site is in the Portman Estate conservation area, with 4 listed buildings nearby. There have been 6 other applications at this address. In the past year there have been 196 applications across Marylebone. We hold 1,036 applications in total for the W1U postcode area.

Application Details

Reference
24/04852/FULL
Address
126 - 134 Baker Street London W1U 6SH
Postcode
W1U 6SH
Local Authority
Westminster
Application Type
Full Planning Permission Application
Scale / Size
Small
Decision Status
Undecided
Current Status
Pending
Ward
Marylebone

Applicant & Agent

Agent
CarneySweeney
Agent Address
Office 3.01, Scott House Suite 1, The Concourse Waterloo Station London SE1 7LY United Kingdom

Planning Application Dates

Date Received
17 July 2024
Target Decision Date
11 September 2024
Date Validated
17 July 2024
Date Submitted
17 July 2024

Planning Decision

Statutory Period
56 days

Publicity

Appeal

Additional Information

Planning Portal ID
PP-13222774
Comments
0
Documents
1
Coordinates
51.521730, -0.157062
Enriching application data
2/3
Council recordsAppealsFlood risk

Source: Westminster

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

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Planning constraints

Designations at the address point. Ones next to the site may also apply.

  • Conservation area: Portman Estate
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
  • Brownfield land register: 126 - 134 Baker Street, London, W1U 6SHRegister site at or near this address
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)

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 and heritage coasts.

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 2026-10-09. 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.

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