Certifications   In addition to being a fully licensed, bonded and insured construction contractor, Stetz Construction is involved in continuing education for both its personnel and other workers in the industry. Furthermore, we ensure our workforce is certified in new technologies and extraction methods and maintains our implementations in strict accordance with state and Federal guidelines and requirements. Washington Contractors License #STETZC*957B7 Washington UBI #601580291 NADCA Licensing AHERA Certified Inspector HazMat Certification EPA Lead Certification