US engineer Aecom and subsidiary Hunt Construction Group will work in a joint venture with Swedish group Skanska as the general contractor for the redevelopment of the Seattle Centre Arena.
The cost of the project had been expected to be $600m, but the latest estimates put it at $700m, partly because of the need to provide more locker space.
The team will work with sports architect Populous and developer and project manager Creative Artists Agency on what Aecom describes as the "largest private investment in the history of Pacific Northwest sports and entertainment".
Due to hold 140 events each year, the redeveloped arena will almost double its interior size to 69,680 sq m, will meet LEED standards and will preserve its current roofline.
Chris Carver, Populous principal, said: "The redevelopment is focused on creating a home for a variety of events that will appeal to an entire cross section of the Seattle community.
"For fans, this means providing a myriad seating options and a redesigned seating bowl with strong sightlines for hockey, basketball, concerts to truly become a place where people love to be together."
Construction is due to start in the autumn.
Images courtesy of Populous