29A James Street Marylebone London W1U 1DZ
Proposal
Installation of an air handling unit within the basement lightwell on the Picton Place elevation, installation of a cold room condenser unit and two condenser units within the rear plant area, replacement of the rear kitchen extract ductwork, installation of an acoustic enclosure and associated alterations. (Revised description of development)
- Received
- 6 August 2026
- Decided
- 25 September 2026
- Council
- City of Westminster
- ReceivedSubmitted6 Aug
- ValidatedValidated6 Aug
- Consult.Consultation
- TargetTarget Date
- DecidedDecided25 Sep
Decided in 50 days (council typically 49)
This is a full planning application at 29A James Street Marylebone London W1U 1DZ. Westminster has handled 4,496 applications of this type and approves 85% of them, typically deciding them in 74 days. This one was decided in 50 days, 3 weeks quicker than Westminster's median. The site is in the Stratford Place conservation area, with 4 listed buildings nearby. There have been 2 other applications at this address. In the past year there have been 517 applications across West End. We hold 1,036 applications in total for the W1U postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Planning history at this site
3 other applications at this property, newest first.
- 20265 Oct
Proposed alterations to the existing shopfronts along the front and side elevations at 29A James Street.
PendingApplication26/06782/FULL - 202610 Jul
Display of two externally illuminated fascia signs each measuring 0.48m x 2.4m (Linked app: 26/00843/FULL
PendingAdvertisement consent26/04621/ADV - 20263 Mar
Replacement shopfront including openable shopfronts to both James Street and Picton Place elevations, and…
RefusedApplication26/00843/FULL
Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Stratford Place
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
- Brownfield land register: 15-18 Picton Place And 27-29A James Street Marylebone LondonRegister 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.
Consultants on this application
- Bidwells · Agent for this application
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