Welcome To CTI Companies


 CTI Companies, all of our companies under one roof.  Contractors Training Institute -> Lead Renovator Training, LLC  and CTI-Services.


Ed Wenz is the owner.  Ed is a building & remodeling contractor, a new home builder, Lead Abatement Contractor, a Lead Supervisor, Lead Inspector, Lead Risk Assessor, Asbestos Abatement Supervisor / Contractor, & Asbestos Building Inspector. 


We are a fully accredited trainer for the EPA. We are EPA Certified Renovator Trainers for lead-safe work training. We also teach lead abatement, lead inspector, lead risk assessor, mold remediation, OHSA compliance, & more in Michigan, Ohio, Indiana, Illinois, Minnesota, New York, Pennsylvania, Tennessee, Kentucky, Florida, Georgia, Louisiana, Nevada, South Carolina, North Carolina & most the USA.

CTI is also an approved trainer of continuing education for Michigan Realtors and Insurance Adjusters.  We provide many different classes to help realtors and insurance adjusters maintain their license with continuing education but also gain sure knowledge of construction and environmental issues in structures.


Ed Wenz has received the State of Michigan Bureau of Construction Codes a "Lifetime Approval as an Instructor" for building officials, building inspectors, and plan reviewers in the State of Michigan.


‚ÄčEd is an expert witness for the Michigan Attorney Generals office.

Call the one who has the answers, Ed Wenz (248) 698-6900