Located in the heart of Mayfair, the project will provide 85,000 sq ft of premium office space across nine stories with over 7,000 sq ft of communal terracing.

Toureen Group is understood to have secured the enabling and foundations package for the job, which is Mace’s first with Astrea.

Mace is working towards the highest sustainability standards for the project of BREEAM Outstanding, WELL Platinum and LEED Gold. The building will also achieve WiredScore Platinum.

Designed by architects Piercy & Company, the transformation of 38 Berkeley Square will involve using a mix of precast facades and Portland stone.

Completion is expected in the first quarter of 2024.

Ged Simmonds, Managing Director for Commercial Offices and Residential at Mace, said: “We are delighted to work on the transformation of 38 Berkeley Square, on behalf of Astrea.

“Our team will support the client’s vision for a destination office space with an innovative sustainability strategy, minimising carbon emissions during demolition and build.”