Dietz Engineers, LLC, is a structural engineering firm in Tyler, Texas. The company grew out of the former firm Kassaw and Dietz, Inc., which was established in 1976 by Jerry D. Kassaw in Tyler. Donna M. Dietz joined his firm five years later.  In 1998, the firm became Kassaw and Dietz, Inc., with Ms. Dietz becoming President in 2003. Dietz Engineers opened its doors in 2010.

We are located in South Tyler in the Colonial Building at the corner of Old Bullard Road and Chimney Rock. Our address is 5935 Old Bullard Rd. Suite 200. Tyler 75703.