The 20-story, 435K SF Tower 333 in Bellevue recently sold for $401.5M.

The Class-A office building was occupied by Expedia in 2008 to 2019. Amazon will take over the lease for the entire building this year.

Equity Commonwealth’s proceeds after credits, mostly for contractual lease costs and transfer taxes, were $316.7M. The company’s cash balance immediately after the sale was $3.4B. A trust affiliated with Equity Commonwealth purchased the building in 2009 for $168M. Its tax assessment is $269M.

Amazon’s announcement to relocate much of its Seattle-based headquarters to Bellevue  last year spurred instant interest in the already tech-heavy city. The announcement felt like validation to Bellevue stakeholders, who were still reeling from Expedia’s announcement that it would relocate its corporate headquarters to the Seattle waterfront.

Amazon also recently purchased the Bellevue Corporate Plaza and leased 715K SF in the planned development at the old Cadillac dealership site at 1001 106th Ave. NE.