Cowan Group Engineering, LLC is growing through the acquisition of the Dodson-Thompson-Mansfield, PLLC, Land Survey Division!

“Growth is never by mere chance; it is the result of forces working together.” – James Cash Penney

“Cowan Group Engineering has experienced tremendous growth over the past several years and we’re thrilled to have the opportunity to bring on a land survey firm who is so well-revered in the State of Oklahoma. Dodson-Thompson-Mansfield is now part of the CGE Team, and we’re prepared to hit the ground running and achieve maximum growth together.”
- Jeff Cowan, CEO, Cowan Group Engineering


Since inception, Cowan Group Engineering (CGE) has provided land survey throughout the State of Oklahoma. We are excited to announce that the Dodson-Thompson-Mansfield (DTM) land survey division has joined the CGE team! With the acquisition of DTM, combining our talent, CGE now has one of the largest and most experienced land survey teams in the State of Oklahoma. We are confident we will provide you with the experience and capabilities that your projects demand, and look forward to working together and continuing our professional services with your organization.

We encourage you to take a look around our site, follow us on social media and reach out to us any time with questions, concerns, comments or if you’d like to grab a cup of coffee.

A CGE truck sits in a field with survey equipment and the Oklahoma City skyline in the background.