43 - 45 Portman Square London W1H 6LY

Proposal

Amendments to planning permission dated 02 March 2026 (RN: 25/06153/FULL) for the 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); NAMELY rooftop plant screening; enlargement of lift overrun; adjustments to PV layout; reconfiguration of Level 10 north façade with doors and panels; consolidation and removal of blue roofs at Levels 10 and 8; enlargements of SW stair roof with addition of vent for pressurisation; updating of south façade windows with discreet vents; alerations to NW mansard for maintenance access; addition of additional louvres for building services.