The Koin Centre is a multi-use building covering an entire block in the heart of the Central Business district of Portland, Oregon. It consists of 2,137 m2 of retail and entertainment space on the first three levels; 30,100m2 of office space on floors 4 through 19; and 44 condominiums on the uppermost 11 floors. There are studios and broadcast facilities of the local CBS affiliate, KOIN-TV, located in 6,317m2 below grade. The exterior is a combination of natural limestone and brick, trimmed in marble with grey-tinted reflective glass windows. The galvanized steel crown, a featured pyramid top, has stainless steel edges and is colour coated sky blue. Interior finishes include Italian perlato marble floors and walls, anodized aluminum doors, and custom-designed chandeliers. A dramatic 23’6″ ceiling distinguishes the office entrance on Columbia Street.
Architect: Zimmer-Gunsul-Frasca Partnership
Interior Designer: Zimmer-Gunsul-Frasca Partnership
Structural Engineer: kpff Consulting Engineers
Mechanical Engineer: Peterson Associated Engineers Inc.
Electrical Engineer: Peterson Associated Engineers Inc.
Landscape Architect: Mitchell & Nelson Associates Inc.