What Exactly Do We Do???

Harrelson Modular opened in 1979 and began with a limited product line.  Through the years we have evolved into so much more than just designing and selling modular offices.  HMC now offers custom steel or aluminum guardhouses, mezzanines, factory assembled modulars, equipments enclosures, vestibules and so much more.  We have a modular solution for almost any work environment.

The ease of modular construction has always been one of the main attractions.  All our products have continued this theme to help make installs quicker and easier than traditional construction.  Guardhouses are delivered onsite fully assembled and wired and ready to go.  The building is unloaded from the truck and literally set into place on a concrete pad and is ready for use.  This saves time and money for the end user.  Take a look at all we offer and give us call for a free quote today!

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Design Services

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Service Area

Nationwide Sales
and Service


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