About Harrelson Modular Construction

Harrelson Modular Construction, Inc was founded in 1945 as R. F. Harrelson Company and served industrial accounts throughout the Southeastern United States with conveyors and associated material handling equipment. Since 1979, HMC has focused its efforts entirely on modular building concepts for all types of applications, both commercially and industrially.

Why Modular…Why HMC?
Specializing in modular in-plant offices, prefabricated guardhouses, prefabricated shelters, modular mezzanines, modular guardrail, and barrier systems and high speed doors, HMC has answers to your enclosure needs.

Modular Construction offers many advantages when compared to more "standard" types of construction. HMC specializes in designs for all types of applications from small in-plant offices to large modular office complexes in both single and two story configurations. Our modular mezzanines are code compliant in all states and designed to your specific needs and applications. Utilizing prefabricated modular materials, our specialty enclosures and modular mezzanine systems have provided many unique applications not possible with conventional construction methods.

Our capability includes complete CAD design and drawings, providing you with step-by-step approval as the project moves forward. And if required, complete engineering services and sealed drawings are available. Our experienced and attentive staff insures your complete satisfaction. Once onsite, materials are installed in a professional and efficient manner to minimize the impact on your daily operations.

If you have needs for modular in-plant offices, modular mezzanines or prefabricated buildings, you can rely on HMC. We have provided hundreds of enclosures for everything from control rooms to quality laboratories to guard stations and most everything in between. You can bet HMC has provided a modular enclosure for your type application. And if not, we'll do everything we can to help with your unique application.

HMC serves industrial and commercial accounts nationwide, offering sales and installation service for our complete line of modular enclosures and mezzanines.

We welcome you to our home on the web. Please browse our site and then contact us for any application you may have. We are ready, so call on us! Click Here to request additional information.

Design Services

Let HMC’s Staff Assist With Your Layout And Design.

Service Area

Nationwide Sales
and Service


For over 30 years we have set the standard for quality and superior design.