46 Manchester Street London W1U 7LS
Approved on 23 April 2026
Proposal
Variation of Condition 7 of planning permission dated 25 September 2023 (RN: 22/05897/FULL) for, "Installation of 4x air source heat pumps at roof level, single-story extension to the existing rear ground floor to extend existing office use, erection of small closet extension to accommodate WCs at rear mid-ground/first and mid-first/second floors, replacement of non-original windows with double glazed timber sash windows, external repairs to building and associated works, all in association with continued office (Class E) use"; NAMELY, to allow the use of ground floor roof as a communal roof terrace for occupiers of the building. (Application under Section 73).
- Submitted
- 8 December 2025
- Council
- City of Westminster
- ReceivedSubmitted8 Dec
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided23 Apr
Decided in 136 days
About this application
This is a planning application for an extension at 46 Manchester Street London W1U 7LS. Westminster has handled 27,108 applications of this type. This one was decided in 136 days, 12 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. We hold 1,070 applications in total for the W1U postcode area.
Application details
- Postcode
- W1U 7LS
Site constraints
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 (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
- 20258 Dec
Variation of Condition 7 of planning permission dated 25 September 2023 (RN: 22/05897/FULL
This applicationApprovedVariation of conditions (s73)25/08883/FULL - 20254 Dec
Installation of porcelain decking, liquid waterproofing and lead flashing to rear ground floor roof. (linked…
ApprovedListed building consentRelated25/08834/LBC
Planning history at this site
4 other applications at this property, newest first.
- 20257 Apr
Creation of a terrace on the rear ground floor flat roof area. (Linked with 25/00394/FULL
WithdrawnListed building consent25/00395/LBC - 20257 Apr
Creation of a terrace on the rear ground floor flat roof area. (Linked with 25/00395/LBC
WithdrawnListed building consent25/00394/FULL - 202313 Oct
Installation of a conservation rooflight window within the roof central valley to replace the existing…
ApprovedListed building consent23/07149/LBC - 202313 Oct
Installation of a conservation rooflight window within the roof central valley to replace the existing…
ApprovedFull Planning Permission Application23/07148/FULL
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Around this site
Nearby applications
- 46 Manchester Street London W1U 7LS23/07149/LBC · HeritageApproved0.0 mi
- 46 Manchester Street London W1U 7LS23/07148/FULL · FullApproved0.0 mi
- 45 Manchester Street London W1U 7LS24/04922/LBC · HeritageAwaiting decision0.0 mi
- 44 Manchester Street London W1U 7LR24/04921/LBC · HeritageAwaiting decision0.0 mi
- 41 Manchester Street London W1U 7LN26/01813/ADLBC · ConditionsRefused0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman0.7 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing0.9 mi
- Orient Construction Consultancy LimitedVerifiedLondon4.1 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering5.6 mi
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