Clark Tradition Concept/Construct Capabillities Project Profiles Awards Contact A Tradition of Quality Clark Incorporated is one of Eastern Pennsylvania's premier contracting and facility service companies. Founded in 1931, Clark Inc. offers design, construction and maintenance of mechanical and electrical systems for a wide array of commercial, industrial and institutional applications. Corporate HQ: 3109 Lincoln Highway E. Paradise, PA 17562-0100 Lancaster: 619 East Ross Street Lancaster, PA 17602 © 2005 Clark, Inc. | Site by: DLD Creative.