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Storage Unit Kits

Whether you are a business owner looking to expand your self-storage business, an entrepreneur wanting to start a mini storage business, someone waiting for a more permanent living situation, or just someone who needs a place to store an ever-growing collection of hobby vehicles, you need storage solutions. And Worldwide Steel has you covered.

Worldwide Steel Buildings offers a wide range of metal storage unit building kits and mini storage building kits that can be customized in all different building sizes, unit sizes, door styles, and roof pitches to best fit your self-storage industry needs. We offer open storage units for RV and boat storage and can handle any custom design needs you have in the most economical, high-quality mini storage facility kits available.

DIY Metal Storage Unit Kits

Sure, there are climate-controlled storage buildings, systems and complexes all over the country, each one advertising that they’ll take care of your storage needs for a monthly fee. There are probably plenty of them in your area. So why not just rent one of these mini storage units and save yourself the trouble of building your own? 

In some short-term situations, just renting a storage unit for a couple of months probably does make the most sense. But not for everyone and not for long. 

First, if you’re looking to store your own things (meaning, not get into the mini storage business), there’s the appeal of owning your own building on your own property, which you can design however you want. You know exactly what you need to store and what’s most important in that storage building (size, climate, HVAC and electricity, wide entry doors, generous clear span, etc.). Rather than choosing the best-fit unit size from an existing company, you can design your building based on your needs. Plus, you don’t have to check on a storage building regularly to ensure it keeps the elements out and your belongings protected. When you invest in one of our steel building kits, you won’t have to. 

Second, if you’re looking to make money from steel mini storage buildings (meaning, start your own storage unit business), you won’t be able to do that very quickly working through someone else. A prefab metal building kit from Worldwide Steel is affordable from the beginning. It goes up much more quickly than traditional construction (without the need to hire contractors, engineers, or rent heavy equipment), which means you can start making money and getting a return on your investment quickly. 

No matter your reason for DIYing a storage solution, Worldwide Steel has you covered. All our steel building kits are fully customizable, inside and out, and designed to last for decades into the future. 

High-Quality & Durable Storage Units

Worldwide Steel Buildings makes and manufactures its own steel building kits right in the heart of America. That means you don’t have to work with a middleman on your storage building project, and we can guarantee the quality of every piece and part that gets delivered to your job site. 

Worldwide Steel uses only high-quality American recycled steel for all our building components. Our trusses are built on jig tables to maintain the same quality on every custom storage building and dipped in our rust inhibitor/primer tank to help your new mini storage buildings last for decades. 

Each truss is then inspected and pre-assembled to ensure that your new storage building goes together smoothly, the first time. This makes construction cost-effective, especially compared to standard commercial building construction pricing. 

Your Worldwide Steel Building is built to last, and we guarantee it. Our 50-year structural warranties, offered on every self-storage facility kit, sets us apart from the standard one- to two-year warranties offered by many other steel building companies. The premium sheet metal we use for siding on our commercial buildings also comes along with a 40-year warranty, giving you a low-maintenance storage building with the durability to last a lifetime.

Storage Building Customization

Not all commercial storage buildings or self-storage units are created equal. At Worldwide Steel, we know what you’re storing affects the requirements of your storage facility and even its building type. That’s why we make it easy to customize your building kit, at a low cost per square foot. 

Whether you need enough space for RV storage or just the room to keep some boxes, we have floor plans to fit your needs. If you need roll-up doors large enough for a yacht or simple walk-through doors for smaller, affordable storage space, we can help you design your metal storage building kit in the way that works best for you and your belongings. 

Know what you want? You can start designing your own storage facility with our 3D Online Building Designer right now! Want to explore your options? Check out some of our customers’ recent steel building projects for some inspiration: 

Recent Projects

Why Choose Worldwide?

  • Quality

    High quality products throughout the building process.

  • Durability

    Durable building materials with a 50 year structure warranty.

  • Experience

    More than 100 years of building experience.

  • Factory Direct Advantage

    Shipped direct from our factory.

  • Strength

    Designed to withstand harsh weather conditions.

  • Ease of Assembly

    Engineered for simple modular assembly.

  • Versatility

    100% usable space clear to the peak.

  • Design

    Designed to meet required loads and codes for your area.

  • Service

    Dedicated support from first phone call to final bolt of assembly.

  • Value

    The longest lasting metal building kits at an affordable price.

Ready to take the first step toward designing and building your very own storage unit (or units) rather than continuing to rent? You’re in the right place. The experts at Worldwide Steel have helped hundreds of happy customers get their storage buildings off the ground.

Contact one of our experienced Mini Storage Building Consultants today for a free quote to get started on your custom steel self storage building kit. Call 800-825-0316 or click here to fill out our contact form to get a quote.

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Watch a video testimonial by a satisfied Worldwide Steel Buildings customer talking about his new steel building kit.
Use our 3D Building Designer to plan and design your own custom steel building and see what the final product will look like from Worldwide Steel Buildings.
Worldwide Steel Buildings provides a wide variety of custom options for steel building kits to produce the metal building that works best for you.

Download These Helpful Guides


Whether this is your first metal building project or you’re
looking to stretch your expertise with a more involved
custom metal building, Worldwide Steel Buildings is
beside you every step of the way. When you’re ready to
get started, our team of experts is here to answer any
questions you have about our building systems. For now,
if you’re brushing up on your metal building kit
knowledge solo, we provide these helpful guides to help
you get started.

Unlike many other steel building companies, Worldwide Steel operates as more than just a middleman. We’re your building manufacturer, your expert advisor (questions about clear span, job site requirements or local snow load recommendations? We’ve got answers) and your steel building project champions – from idea to completion.

When you need your metal barn, metal garage or other metal building kit to be high quality, cost-effective and fully-customizable, you need to work with Worldwide Steel Buildings.

Curious about Worldwide Steel building costs? Contact us today for a free quote

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