Legendre UK has been appointed by Berkeley Estate Asset Management to deliver the redevelopment of 50 Stratton Street in Mayfair, London.
Data provider Glenigan has valued the scheme at £70m.
The Grade A office development, designed by Stiff + Trevillion, will provide 12,500 square metres of office space with 1,115 square metre floorplates, high-end finishes and a combination of communal and private terraces.
Legendre secured the project following a competitive single-stage tender managed by B&Co and Exigere.
BEAM is the property investment and asset management division of Berkeley Group.
The redevelopment has been designed to achieve BREEAM Outstanding and LEED Gold certifications. The all-electric building will use lightweight steel construction and incorporate four new cross-laminated timber floors as part of a zero embodied carbon strategy.
Works will also include the installation of new facades featuring stone cladding, aluminium-framed windows and curtain walling.
Construction is scheduled to begin in June 2026, with completion targeted for mid-2028.
Thomas Vandecasteele, managing director of Legendre UK, said the premium office development “marks a key milestone” for the company.
He added: “As occupiers place increasing emphasis on future-proofed, energy-efficient and sustainable workplaces, 50 Stratton Street demonstrates how central London offices can be redeveloped to meet evolving expectations.”
