43 - 45 Portman Square London W1H 6LY
Approved on 22 April 2026
Proposal
Variation of Condition 1 of planning permission dated 7th April 2025 (RN: 24/04987/FULL) for, 'Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works'; Namely,the retention of existing cores, the infilling of atria, the provision of additional rooflights to the western 3rd floor terrace, layout changes at ground and lower ground levels and changes to some windows on the eastern façade and retention of existing first floor windows, resulting in single storey full height glazing to the retail frontages along Orchard Street (Application under Section 73 of the Act).
- Received
- 29 August 2025
- Public comments
- 1
- Council
- City of Westminster
- Ward
- West End
- Agent
- DP9 Limited
- ReceivedReceived29 Aug
- ValidatedValidated15 Oct
- Consult.Consultation
- TargetTarget Date14 Jan
- DecidedDecided22 Apr
Decided in 189 days (council typically 49)
About this application
This is a full planning application for demolition at 43 - 45 Portman Square London W1H 6LY. Westminster has handled 4,484 applications of this type. This one was decided in 236 days, 27 weeks longer than Westminster's typical decision time. The site is in the Portman Estate conservation area, with 2 listed buildings nearby. There have been 4 other applications at this address. In the past year there have been 484 applications across West End. We hold 896 applications in total for the W1H 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
- W1H 6LY
- Application type
- Full Planning Permission Application
- Scale / size
- Medium
Planning application dates
- Date validated
- 15 October 2025
- Consultation expiry
- 15 October 2025
- Target decision date
- 14 January 2026
Applicant and agent
- Agent
- DP9 Limited
- Agent address
- 100 Pall Mall London SW1Y5NQ United Kingdom
Planning decision
- Statutory period
- 91 days
Publicity
- Last advertised
- 24 September 2025
- Advertisement expiry
- 15 October 2025
- Site notice start
- 12 September 2025
- Site notice end
- 3 October 2025
Additional information
- Planning Portal ID
- PP-14273760
- Documents
- 24
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 (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
- 202623 Jul
Amendments to planning permission dated 22 April 2026 (Ref: 25/06153/FULL
ApprovedNon-material amendmentAmendment26/04951/NMA - 202623 Jun
Amendments to planning permission dated 02 March 2026 (RN: 25/06153/FULL
ApprovedNon-material amendmentAmendment26/04154/NMA - 202622 Apr
Amendments to planning permission dated 22nd April 2026 (RN:25/06153/FULL
ApprovedNon-material amendmentAmendment26/02687/NMA - 202529 Aug
Variation of Condition 1 of planning permission dated 7th April 2025 (RN: 24/04987/FULL
This applicationApprovedVariation of conditions (s73)25/06153/FULL
Planning history at this site
6 other applications at this property, newest first.
- 202615 Jul
Details of accurate and verified estimates of the 'Be Seen' energy performance indicators for the Development…
ApprovedApplication26/04721/ADFULL - 20265 Feb
43-45 Portman Square Condition Discharge 26
ApprovedDischarge of conditions26/00710/ADFULL - 20265 Feb
Details of Construction Logistics Plan to clarify that TfL's assets and services are not adversely affected…
ApprovedDischarge of conditions26/00709/ADFULL - 20265 Feb
Details of signed Appendix A of the council's Code of Construction Practice pursuant to Condition 19 of…
ApprovedDischarge of conditions26/00708/ADFULL - 20254 Jul
43-45 Portman Square (Project Padme) NMA 1
RefusedNon-material amendment25/04609/NMA - 20252 May
Details of accurate and verified estimates of the 'Be Seen' energy performance indicators for the Development…
ApprovedDischarge of conditions25/03065/ADFULL
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
- 43 - 45 Portman Square London W1H 6LY26/04154/NMA · AmendmentApproved0.0 mi
- Bechtel House 35 - 38 Portman Square London W1H 6LR24/06911/ADV · AdvertisingApproved0.0 mi
- Bus Shelter BA Orchard Street London26/01531/ADV · AdvertisingApproved0.1 mi
- Bus Shelter BA Orchard Street London26/01526/ADV · AdvertisingApproved0.1 mi
- 2 Portman Square London W1H 6LA26/02655/ADV · AdvertisingApproved0.1 mi
For applicants and trades
Consultants on this application
- DP9 Limited · Agent for this application
Contractors near this project
Find contractors for extensions near this site- Avent Roofing ServicesVerifiedWestminsterRoofing0.8 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman0.9 mi
- Orient Construction Consultancy LimitedVerifiedLondon4.2 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering5.4 mi
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