Standout Service

We are in the business of building relationships. With 84% repeat business, our building company has been dedicated to exceeding customer expectations for the past 51 years.


Concrete, security glass, and electronic controls were advanced features introduced in the new construction we completed for the Macomb County Jail in 1987. The $27 million award-winning expansion was completed ahead of schedule and under budget, even though four additional floors were added to the project after construction started.

Larger Projects, Lower Costs

The new construction of Dakota High School in Macomb, Michigan, in 1994 was, at 398,000 square feet, one of our largest projects at that time. The project came in on budget and, at $42 million, cost only $109 per square foot—$30 less per square foot than its closest comparable.

embracing the new

Embracing the New

We like to take on unique projects, and embrace the challenge of creating new construction models and pioneering solutions. In 2009, DeMaria built the NextDiesel biodiesel manufacturing and administrative facility in Adrian, Michigan. The project cost $11 million and included development of a 25-acre site and provisions to allow the plant to double its output over time to 40 millions gallons a year without expanding the existing facility.


Community Focus

The 25,000 square foot Rosa Parks Transit Center in downtown Detroit is an award-winning project that DeMaria completed in 2009 for $13 million. The transportation center’s beauty and high craftsmanship is a testament to our love for the Motor City.


Green IniativesUM Cyclotron Roof 1

Green Initiatives

We have been working on LEED-compliant sites for many years. Our first certified building was the LEED Silver-rated Consumers Energy Livingston County Service Center, built in 2010. We are also experienced with building sustainable systems like green roofs, underground geothermals, and DIRTT system walls.

Government Contracting

Government Contracting

DeMaria has worked as a contractor for local, state, and federal governments for 41 years. We began our ongoing partnership with the US Department of Veterans Affairs in 1994 when we renovated and completed new construction at the VA’s Ann Arbor location. Since then we have built a variety of VA facilities all over the country, including in Togus, ME; Palo Alto, CA; and Columbus, OH.

Serious About Safety

We take a proactive approach to safety, providing specialized training through the AGC, CAM and the Michigan Occupational Safety and Health Administration (MIOSHA). We require site-specific training for all field workers before they begin work on a project. All operations employees are required to complete 30 Hour OSHA Certification.  Our goal for each project is to have zero accidents, incidents, injuries, or citations. Our low EMR of 0.60 is better than the industry standard and testament to our efforts to keep people safe.


Best and Brightest

Crain’s Detroit Business ranked DeMaria as #15 on their Largest General Contractor list in 2019. We have also been honored for 17 years in a row as one of Detroit’s 101 Best and Brightest businesses to work for, in addition to being named one of The Best and Brightest Companies to Work For in the Nation in 2019. We have been working hard for 50 years to make our family-owned business a leader in the construction industry.