Engineering Delaware's Future Since 1970
Call Us: 302.697.7694


Tom Hartley on Staff at DSEThomas J. Hartley, P.E. President

  • 28 years experience in Engineering & Construction
  • Licensed in Electrical, Mechanical & Plumbing Engineering
  • PE License in DE, MD, NJ and PA
  • State of Delaware – Master Electrician License
  • State of Maryland – Master Electrician License

Contact us today to handle your next engineering project!

Diamond State Engineering

3588 Peachtree Run Rd
Dover DE 19901
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Mission Statement

Diamond State Engineering is a firm committed to being the leading turnkey facility system solution provider by encouraging educational and vocational growth for our employees, promoting good health and safety practices and striving for continued growth and success. Our purpose is to effectively increase the benefits to our employees and their families while exceeding client expectations.