Otto Rosenau & Associates was first established in 1954 as Herman Adalist & Associates, Inc. and in 1973, the corporate name was changed to Otto Rosenau & Associates, Inc. Since then, the Rosenau family has led the company to become one of the top testing and inspection agencies in the Greater Puget Sound region.

Otto Rosenau & Associates, Inc. (ORA) | 6747 Martin Luther King Jr. Way S. | Seattle, WA 98118-3216 | U.S.A