Harthorne Hagen Architects was established in 1954. Our practice has specialized in two areas: architectural design of K-12 educational facilities within Washington State; and commercial/industrial design throughout Washington, Oregon and Alaska. Our office is located in Seattle, Washington, near the shores of Lake Union. Since 1985, we have designed over 140 school projects including new elementary, middle, and high schools. Many of our projects also include additions and renovations to existing elementary, middle and high schools around much of Washington State, most recently in Sedro-Woolley, North Kitsap, Ferndale, Arlington, Tahoma, and Seattle School Districts.