Portable Office Containers & Mobile Site Offices

Portable Office Container Units, Portable Office Container Unit, Portable Office Container, Mobile Site Office Units, Mobile Site Office Unit, Mobile Site Office

We provide customized storage containers for portable containers and mobile site offices for sale or rent. We have a variety of rental and purchase options to fit your needs with no hidden fees and a flexible delivery schedule. Call us at 1-800-686-9114 for a quick quote or fill out the form on our quick quote page.

Since 1995 Southwest has been a leader in cutting-edge development of modified, custom built containers.  We use the ISO shipping container that is 14 gauge heavy duty steel, and varies in length, all of which are 8’wide and 8’6” or 9’6” high.  Our experienced, licensed and certified fabricators, engineers and designers are adept at customizing the container into just about anything you could imagine.  Some examples include offices, guard shacks, homes, etc.  We can modify by adding insulation, HVAC, electrical, windows, doors, wind turbines, sky lights, partitions, work spaces, flooring, etc.  These portable units are much less costly and convenient than a conventional building, not to mention they’re portable and can move along with you if you so desire.  Call us to speak with one of our sales team members to assist you in bringing your concept to reality!

  • Our mobile office storage units range in length from 10′ to 40′ to meet your specific needs.
  • High security lock boxes are installed on all portable offices for the very best in security.
  • Mobile offices, ideal for construction sites, sit flat on the ground for safe and convenient access.
  • Options available to rent or purchase any of our portable field office units.

Our ground level office containers offer the quickest and easiest alternative to save you time, effort and money. No hassles with permits, set-up fees, stairs or tie-downs.

From our open bay office to our combo units comprised of part storage, part office, SMS has a rental choice to meet your diverse needs. Safe, secure and convenient.



Portable Office Container Units, Portable Office Container Unit, Portable Office Container, Mobile Site Office Units, Mobile Site Office Unit, Mobile Site Office