Demien Construction

Our Story

Demien Construction Co. is a family-owned business with two generations of commitment to building for a better community. Founded in 1956 by Ralph Demien, the company has built a reputation for excellence, serving the greater St. Louis area and beyond. Today, Larry Juern, Ralph's nephew, continues the family legacy, bringing over 50 years of experience in the construction industry to every project.

Our Services

At Demien Construction Co., we offer a wide range of services to meet your building needs. Our team of experts is dedicated to providing the highest quality products and services, from traditional construction to complete turnkey design build services. With our expertise, you can trust that your project will be completed on time, within budget, and exceeding your expectations.

General Contracting

As a full-service General Contractor, we have over 50 years of experience providing the right products and services to meet your project needs. Our General Contracting Services include expert job site coordination, ensuring that all trades are managed effectively, and the project is completed on schedule.

Design Build Services

Our Design Build Services take your vision and turn it into a reality, faster and better than traditional construction. With our expertise, you can trust that your project will be designed and built to meet your specific needs.

Pre-Engineered Buildings

We specialize in modern systems construction, resulting in a simpler, faster, and better project at completion. Our Pre-Engineered Buildings offer cost-effective and efficient solutions for your building needs.

Pre-Project Planning

At Demien Construction Co., we understand that every project is unique, and we're committed to meeting each patron's specific needs. Our Pre-Project Planning Services help you get started on the path to a completed facility with a working knowledge of design, budget, and time involved.

Community Involvement

At Demien Construction Co., we believe in giving back to the community. We proudly support local organizations, including Rotary, Tri-County Builders, Habitat For Humanity, YMCA, Chamber of Commerce, St. Charles County Lutheran High School, St. Charles County Community College, 4-H, Therapeutic Horsemanship, and United Services YMCA.

Our Partnership with Butler Manufacturing

As an independent dealer of Butler Manufacturing Company, Inc., the world's largest and most experienced supplier of steel building systems, we bring expert design skills, quality craftsmanship, and superior materials to every project. With over 50 years of experience in the construction industry, we're committed to building for a better community.

Featured Projects

Take a look at some of our featured projects, including the Crestview Pool Deck and the Landmark 2000 Structural System. These are just a few examples of our expertise and expertise in providing quality facilities.