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Our History

Ellison-Mills Contracting is a locally-owned business with roots that have been set in Casa Grande for over 30 years. The company first started out as Achen-Gardner, Inc. and now evolving into Ellison-Mills Contracting.

The company has overseen the completion of projects that range in size from ten thousand to four million dollars and no matter what the scope or size of the project is, you can always expect the highest quality product  in the market with unmatched, hands on management. Additionally, we have the capacity to complete projects under Design-Build, Construction Manager at Risk (CM@R), and Hard Bid Projects.

Meet Our Team

Our team is composed of many professionals from diverse construction and business backgrounds. The management team has more than 70 years of combined experience.

Mike MillsOwner
Brent EllisonOwner
Renee ScanioProject Admistrator


The Toltec Sewer Project has been in progress, or lack of progress, for almost six years. The people of our little community have been told so many different stories that we never knew what to believe.

Finally, there is something positive about this project. That positive is Ellison and Mills Contracting LLC, who is the firm that was hired by the City of Eloy, to make the site tie-ins from the lots to the new sewer line.

This letter is written in appreciation of the work, effort, and good will that Ellison Mills Contracting has created while working in the Toltec Subdivision. They were honest, considerate, and I enjoyed working with them.

Richard C Rice • Eloy, Arizona