Built in 1958, 400 SW Sixth Avenue was originally six stories. It was expanded to its current height of 11 floors in 1992, and an aluminum and stainless steel exterior was added. Upgrades have been made to the HVAC, security, fire and life safety and electrical systems. Interior finishes includes marble floors, anodized aluminum, woodwork in elevator cabs and lobbies and custom-designed lighting.

400 SW Sixth Avenue consists of 216,108 square feet of office and retail space, including Camera World, the northwest's largest camera retailer, a hair salon and a delicatessen. There is a state-of-the-art teleconference center on the fifth floor that is open to the public. Electric Lightwave, the tenant who set up the teleconference center, also has its main switch for fiber optics at the building and offers high-speed phone and data transmission service at a discount to building tenants.