Accreditations

Otto Rosenau & Associates, Inc. is enrolled as a State of Washington Engineering Corporation and we are certified as a Women’s Business Enterprise (WBE) by the Office of Minority and Women’s Business Enterprises. We have been 100% women-owned and operated since 1995. The company also qualifies as a Small Business according to the federal Small Business Administration (SBA) standards and we are certified in King County’s Contracting Opportunities Program for Small Contractors and Suppliers (SCS).

Our firm’s professional accreditations and certifications currently include:

Washington Association of Building Officials (WABO)
ISO/IEC 17025 American Association for Laboratory Accreditation (A2LA)

ASTMs E329 (Materials), C1077 (Concrete), C1093 (Masonry), D3666 (Bituminous), D3740 (Soils). E543 (Nondestructive Testing) AASHTO R18

Washington State Office of Minority and Women’s Business Enterprises
State of Washington Engineering Corporation