Experts in container rentals, sales & customization
Let us help you today! 800.686.9114

Who We Are

About Us

Southwest Mobile Storage is a family owned business founded in 1995. Our 11-acre headquarters in Phoenix, AZ features a 90,000 sq ft indoor fabrication facility staffed with more than 40 certified engineers, welders, fabricators, electricians, carpenters and painters bringing over 500 years combined experience specialized in modifying steel containers. This level of facility and expertise is unmatched in the industry.

Our strength for more than 25 years comes from the specialized knowledge and passion of our people, along with serving over 24,000 commercial, construction and residential customers. While the rental side of our business is regional with branches throughout Arizona, California and Colorado, our sales and modification operations are nationwide and becoming global.

As leaders in high-end fabrication of steel containers, we have built thousands of projects from complex customizations for NASA and the US Navy to extensive projects for the City of Los Angeles, GCP Applied Technologies, Helix and Sundt to name a few. Customizing containers goes beyond just doors and windows to us. Whatever you can imagine, we can build without the need to outsource anything. Our certified safety and quality inspection throughout the process means you can expect reliable completion and excellence in steel container repurposing.

Our mobile storage containers and portable offices are rented by small businesses as well as some of the most recognized brands in the world like Amazon, Walmart, Boeing, Universal Studios and more. From service to delivery, we are committed to providing you the best experience and fleet maintained to the highest quality standard—our integrity depends on it.

Play Video about How to modify shipping containers the right way

Our Promise

Unrivaled Expertise & Facility

We know how much time, money and stress it costs when your project isn’t done right the first time. Modifying ISO containers correctly requires specialized knowledge of the nuances of corrugated steel. Our in-house experts have more than 500 years combined container modification experience through thousands of custom projects. We’ve even created unique jigs to make modifying containers more efficient, strong and precise. With our master level expertise and unrivaled 11-acre fabrication facility, you can rest assured your custom container will exceed your expectations.

Vault-Like Security 

You want your equipment, stock inventory and other valuables to be safe. You can rely on our storage containers for security. They are virtually impenetrable, weatherproof and with a high-security dual-locking system at no-extra cost to you. So, have piece of mind knowing your property is secure. You will not find that in any other container.

Superior Service 

When you need to rent, buy or modify shipping containers, you should be able to get what you need, when you need it — without the hassle of a call center. We make it as easy as possible for you by providing you one reliable, dedicated container expert you can trust. From order to delivery to pick up and to reorder, your expert is with you every step of the way.

Highest Quality, Best Value

No matter your budget, industry or whether you’re renting, buying or modifying, you deserve nothing less than the best. We pride ourselves on providing the best all-around value in steel containers. With vault-like security, superior service and unrivaled expertise and fabrication facilities, you’ll find that no other company offers as much.