Construction Testing Services | 3,129 followers on LinkedIn. Leading the Construction Industry in Materials Engineering & Testing, Special Inspections, and Geotechnical Engineering. | Founded in 1994, Construction Testing Services (CTS) has provided special inspections, material testing and geotechnical engineering services for nearly $30 billion in construction. CTS was founded to meet clients’ universal need for a responsive engineering and inspection consultant. The CTS team provides owners with thorough project management—monthly review of budgets and invoices and customized billing.