About Us
Let us make your dream house a reality!
Leadership Built on Experience: Donnie & Debi Marchant
Today, SEMCO is led by Don and Debi Marchant, recognized experts in homebuilding, remodeling, and project management across Oklahoma. Their leadership embodies decades of experience, integrity, and a deep commitment to treating every client like family.
Working alongside their son Seth, daughter Amber and a highly skilled team of builders, designers, and project specialists, Donnie and Debi continue to elevate SEMCO as one of the area’s most trusted family-owned home builders.
ABOUT SEMCO CONSTRUCTION
At SEMCO Construction (SEMCO Homes), we are a family-owned, multigenerational home builderproudly serving Yukon, Oklahoma City, and surrounding communities. Our company is built on more than 45 years of hands-on construction experience, passed down through four generations of Marchant builders.
A Legacy Rooted in Craftsmanship and Family
The SEMCO story began after World War I, when Shelby Earnest “Daddy Ernie” Marchant, Sr. entered the construction industry as a contractor in Dallas, Texas. His dedication to craftsmanship and honest work shaped the values that still define SEMCO today. His son, Shelby Earnest (S.E.) Marchant Jr., expanded the family’s capabilities into new home construction, remodeling, and residential design.
In 1983, the third generation—Donnie Marchant—joined the business, quickly becoming a driving force in its growth and reputation. With a passion for quality and innovation, Donnie helped rename the company SEMCO Homes in 1993. Recognizing Oklahoma’s growing potential, Donnie relocated the company to Oklahoma City in 1998, establishing a solid foundation in the OKC and Yukon area.
As the company expanded beyond residential construction, SEMCO Homes officially became SEMCO Construction in 2019, reflecting its broader expertise in custom homes, barndominiums, steel structures, remodeling, and commercial construction.
What We Build
Our team brings expertise, precision, and professionalism to every project, including:
Custom homes and semi-custom homebuilding
Remodeling and renovations (kitchens, bathrooms, additions, whole-home updates)
Commercial construction, tenant build-outs, and steel commercial structures
Our Mission is Simple:
Deliver exceptional building experiences while honoring the values of honesty, trust, craftsmanship, and family.
Transparent Communication
We keep you informed at every stage of the build with clear, honest communication so you always know exactly what’s happening with your project.
High Quality Materials
We use premium, durable, and industry-proven materials to ensure your home or commercial project is built to last.
Energy-Efficient Construction
Our builds include modern, energy-efficient systems and materials designed to reduce utility costs and improve long-term performance.
Reliable Project Management
From planning to final walkthrough, our experienced team oversees every detail to keep your project organized, on schedule, and on budget.
Building Long-Term Relationships
We focus on trust, integrity, and exceptional service so our clients feel supported long after the project is complete.
