Edison House 223-231 Old Marylebone Road London NW1 5TH
Proposal
Alterations to existing single storey rear extension, erection of infill extension to side elevation lightwell between second and fifth floor levels, erection of extension to rear at fifth floor level and new lift overrun and installation of new mechanical plant within an enclosure at roof level, with associated external alterations including replacement of windows, insertion of new window openings and relandscaping of forecourt to front elevation at ground floor level including new paving, bin stores, cycle parking, seating and retractable bollards. Works in connection with refurbishment of existing office accommodation (Class B1).
- Received
- 9 April 2010
- Decided
- 20 July 2010 · Application Permitted
- Decision level
- Delegated (officer decision)
- Public comments
- 1
- Council
- City of Westminster
- Ward
- Bryanston And Dorset Square
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.
- ReceivedSubmitted9 Apr
- ValidatedValidated10 May
- Consult.Consultation
- TargetTarget Date5 Jul
- DecidedDecided20 Jul
Decided in 71 days (council typically 49)
This is a full planning application for a single storey rear extension at Edison House 223-231 Old Marylebone Road London NW1 5TH. 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 102 days, 4 weeks longer than Westminster's median. The site is in 6 listed buildings nearby. There has been 1 other application at this address. We hold 3,114 applications in total for the NW1 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.
- 201023 Apr
Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the…
ApprovedAdvertisement consent10/03495/AD7 - 20095 Nov
Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the…
ApprovedAdvertisement consent09/08905/AD7 - 200820 Feb
Replacement of existing rear single storey ground floor level extension, erection of infill extension to side…
ApprovedApplication for full Planning Permission08/01762/FULL
Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Molyneux StreetPart of the site · +1 more
- Listed building: Grade II: Roman Catholic Church of Our Lady of the Rosary and Attached PresbyteryOn or next to this site
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed
- Brownfield land register: 15 Crawford Place London W1H 4LGRegister site at or near this address
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (20)
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 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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