Commercial Construction
Demien Construction
Building for a Better Community
Your Trusted Partner in Construction Excellence
Demien Construction has been a trusted name in commercial general contracting since 1956, bringing nearly 70 years of experience to every project. As a family-owned business based in Wentzville, MO, serving St. Charles County and St. Louis County, we specialize in delivering high-quality construction services with a focus on timeliness, precision, and client satisfaction. From comprehensive pre-project planning to expert execution, our team handles every aspect of the building process—allowing clients to focus on their vision while we manage the details. Our proactive planning approach includes detailed budgeting, critical path timelines, and value engineering to ensure cost-effective, on-schedule results.
In addition to traditional construction services, Demien Construction is proud to partner with Butler Manufacturing™ to offer cutting-edge pre-engineered building solutions. These systems are ideal for manufacturing plants, warehouses, and auto dealerships—delivering efficiency, durability, and design flexibility. With decades of experience and a commitment to excellence, we tailor each project to meet exact specifications using advanced engineering tools. Whether you're building from the ground up or expanding existing facilities, Demien Construction is your reliable partner for innovative, long-lasting commercial structures.
General Contracting
Demien Construction provides full-service general contracting, managing every phase of your project with precision and accountability. From site preparation to final finishes, we coordinate skilled trades, maintain quality control, and ensure your project is delivered on time and within budget.
Construction Management
Our construction management services offer clients a collaborative, transparent approach to building. We oversee planning, scheduling, budgeting, and on-site coordination—ensuring smooth execution, risk mitigation, and clear communication from start to finish.
Design-Build
With our integrated design-build services, Demien Construction streamlines the entire construction process by combining design and construction under one contract. This approach fosters collaboration, accelerates timelines, and delivers cost-effective, high-quality results tailored to your vision.
If you’re searching for a reliable and experienced commercial general contractor in St Charles, MO, look no further than Demien Construction.
Founded in 1956, our family-owned business has spent decades building a reputation for excellence in the construction industry. With nearly 70 years of experience, Demien Construction consistently upholds the highest quality standards in every project we undertake, ensuring that clients receive exceptional results tailored to their specific needs. One of the hallmarks of our service is the timely completion of all projects, a testament to our dedication to professionalism and customer satisfaction. This efficiency does not come at the expense of quality; rather, it is supported by our status as a licensed, bonded, and insured company, giving clients peace of mind from start to finish. In addition to delivering outstanding construction services, Demien Construction is also committed to fostering a strong team culture and regularly offers employment opportunities for individuals looking to grow in a supportive, reputable company. Choosing Demien Construction means partnering with a trusted commercial general contractor in St. Charles, MO, who values integrity, craftsmanship, and community relationships.
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