Office & Classroom Trailers for Sale



At MO Great Dane, we design and deliver customized mobile office, classroom and job site trailers and can build you a trailer in nearly any width/height specification and with any number of custom options – see builds below for examples. We also have IN STOCK office trailers for sale that you can see below.

Whether it’s more storage or fold-up tables or desks that you need, you’ve got options when it comes to your trailer design! From 6×10, 7×16, 8×20 to 26-48 foot lengths and above, we’re able to meet your custom specifications. Any portable classroom or office trailer can be built with the color, flooring, heating/AC, windows, generator, etc. that you choose – like vinyl flooring, A/C, LED lighting, aluminum construction, and much more. Our custom trailers are perfect for a variety of environments, including construction, oilfield and rural classroom settings.

We’ll also ship across the U.S. from the location nearest you; see our factory & dealership locations here.


20’ aluminum frame office trailer including generator prep, electric roll out awning, scene lights, more ›

Includes strobe lights, flood lights, interior counter, 48″ overhead cabinet, entry doors, cable doors, baseboard heater, roof mount… more ›

Check out the all new 24’ Office PRO. Factory included are a half bathroom, three workstations, more ›

With side & rear entry doors, full length interior counter (w/ 48″ overhead cabinet), air conditioner with heat strip, insulation, windows, 50 amp… more ›

Check out this 24-foot mobile medical office that includes heating, AC, exterior awning, scene lights, all-aluminum frame for weight savings, front office with desk, cabinets, and more ›

Mobile classroom welding training trailers available at MO Great Dane. This past build featured 12 welding stations with curtains and partition walls, upgrade option to 480-volt 3 phase power, deluxe insulation package with more ›

This Mercedes Van comes with 14’ of floor space. It includes countertops, storage cabinets, AC with heating, and an electrical package. Custom interior layouts and additional options are also available.more ›


Click on a trailer image below to see galleries of our featured past builds and what we can do for you! We also offer a huge variety of trailer options. Request a quote below, contact us online or call +1 573-545-3065 today to get started on your custom build.