Umpqua Bank Plaza is a 19-story tall office tower in Downtown Portland, Oregon, United States. Faced with red brick, the structure is 263 feet (80 m) tall and has 265,000 square feet (24,600 m²) of space. Opened in 1975 at a cost of $16 million, the building was designed by Wolff, Zimmer, Gunsul, Frasca (now known as ZGF Architects). Originally named the Benjamin Franklin Plaza after tenant Benj.