The SEMCO Team

Serving Yukon, Oklahoma City, OK & surrounding areas

At SEMCO Construction, building a home is more than building a structure of sticks and bricks. We are building the anchor that allows families to grow for a lifetime. Our family legacy is building custom homes with integrity and unsurpassed quality craftsmanship, as well as commercial and remodeling projects.

The SEMCO Team of professionals have extensive knowledge of the construction industry and truly care about your needs. Our mission is to work closely with you ensuring the job is completed correctly, within your timeframe, and on budget. We want you to be a part of the process from beginning to end.
From construction finance, to design, to the actual construction, we’re a one-stop shop for new home construction, remodeling projects, and commercial construction. No matter the project, we can handle anything you throw our way and deliver the results you are looking for. Give us the opportunity to show you the SEMCO Construction’ way!

At SEMCO, two warranties are provided on all new homes built at no additional cost to you. Those warranties include; a one-year written Builder Warranty that covers the performance standards for each home built; and a 10-year written extended warranty with Residential Warranty Corporation. SEMCO Construction is honored to be one of the approved builders selected to offer a 10-year written warranty by Residential Warranty Corporation.

Semco Constructon staff of Yukon,OK and Oklahoma City, OK

Our Team

Donnie Marchant of Semco Construction

Donnie Marchant

Donnie Marchant oversees all aspects of SEMCO Construction and began his construction career more than 40 years ago. Donnie attended Bethany Nazarene College in Bethany, OK from 1972 to 1976 and gained building experience working to pay for his education. Donnie formed a building company with his father, and the business took a natural progression and began to flourish as he built quality homes in the tradition of those before him. Integrity in all facets of construction, plus experience is an unbeatable combination which assures unmatched excellence.

The 4th generation became a part of the SEMCO Construction legacy when Josh Marchant and Seth Marchant, Donnie’s sons, were added to the SEMCO team. SEMCO Construction is a builder member of the Central Oklahoma Homebuilders Association (COHBA), the Oklahoma State Homebuilders Association (OSHBA), and the National Association of Homebuilders Association (NAHB).

Debi Marchant

Debi Marchant manages the financial and organizational aspects of SEMCO Construction. Debi is a seasoned manager who brings financial knowledge, organizational skills, and marketing expertise along with the ability to make critical decisions needed in any successful company. Debi received her education at the University of Texas in Arlington and Nazarene Bible College. After working for many years as a marketing analyst, children’s pastor and a manager in legal administration, Debi joined SEMCO Construction in 2002. Debi is a licensed realtor with McGraw Realtors which allows her to help buyers sell their existing home using the experience and knowledge needed in a changing housing market.

For many years Debi’s love and passion was for children and their families. As co-owner of SEMCO Construction and serving clients as a realtor with McGraw Realtors, she is able to continue her passion by building and selling homes which become the anchor that allows families to grow for a lifetime. Her mission is simple: You, the client always comes first!

Josh Marchant of Semco Construction

Josh Marchant

Josh has been building and remodeling homes for more than 20 years and is the manager of the construction side of SEMCO Construction. Josh followed in the footsteps of those before him learning the building and construction industry from the ground up beginning in high school. Josh’s expertise includes knowledge of the commercial construction industry having worked as a superintendent for a commercial construction company.

Josh’s passion is to complete every project on-time with quality and integrity and to continue the tradition set before him three generations ago.

Seth Marchant of Semco Construction

Seth Marchant

Seth Marchant began his journey with SEMCO Construction more than 15 years ago while still in high school and continued the journey through college while attending Southern Nazarene University. Seth supervises and manages the new construction job sites and oversees the crews in several critical areas including managing Top Coat Paint Company a subsidiary of SEMCO Homes. Seth began as his forefathers, learning the practical aspects of home building and construction.

Seth’s greatest desire is to create lasting relationships by building homes with craftsmanship that ensures value and home buyer satisfaction.


Kind words from our customers

“We contracted with Josh Marchant and his family at SEMCO Construction to remodel our kitchen and paint our house. The house is 40 years old and had not been updated and had never really had a decent exterior paint job. Every remodel job has surprises and, of course, as the job proceeded our vision evolved. These folks can do anything – our water heater began leaking during the project and they had us up and running with a new one in a few hours. Both projects came in on budget and are beautiful. These guys are unflappable, honest, smart and talented. Sort of miss them actually. We unequivocally recommend the Marchant’s and their company SEMCO Construction.”

Joe Mallonee

“We built our first home in 2004 with SEMCO Construction and have now finished building our second home with them, as well and are very excited. We loved our first home! It was absolutely gorgeous! We received compliments all the time from friends who paid more for their new homes. The Designer was very helpful in selecting paint colors, tile, wood stain, and fixtures that complement each other. Our Construction Manager was always available to answer any questions that we had. All of the work crews did such a wonderful job that the end result is something to brag about.”

Jeff and Kathy Bright

“Incredible experience building our dream home with SEMCO Construction!
We were anxious about staying in budget, worried about how all the design would come together and hoping for a smooth process… they met with us at least weekly to ensure we were on track, their 35 + years of experience with design was very evident as we now have the most beautiful home we could have ever hoped for!! Smooth, worry free and fun process!!! Thank you!!! We built a forever friendship with your team!”

Amber Medved


“I have worked with Debi for a couple of years now. I can honestly say that SEMCO puts their reputation on the line with every home. They go above and beyond to build a quality product, but then take the extra steps to explain the home to the customer. This final step of customer service can not be overlooked. I searched in my home (NOT A SEMCO HOME for a year before finding the water shut off valve. I also had a plumber looking. I finally cut the damn wall out and found it on other side of where it was supposed to be…..bad customer experience. My point is: If the business owner is willing to discuss and develop a plan for your dream home and then close the deal by showing you the final product, then you can just about be assured they are in it to succeed.”

Daniel Heaton

“Outstanding home builder! I have worked with this builder many times and they continue to build amazing homes with great quality. I would highly recommend this builder to a friend or family member.”

Tyler S.

“Great family owned builder, top quality design and workmanship on our patio addition. Exceeded our expectations.”

Travis M.

Central Oklahoma Home Builders Association Logo
Oklahoma State Home Builders Association Logo
National Association of Home Builders logo
Residential Warranty Company LLC logo

Outdoor shot of a house constructed by Semco Construction
Interior warehouse work process of Semco Construction at work
Interior kitchen design and black marble countertop by SEMCO Construction
Interior bathroom designed by Semco Construction with black marble countertop