• Base building kit package
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Metal Building Sizes

Listed below is a selection of the most common steel building sizes. These base packages include all primary and secondary framing, roof and wall siding panels, and two framed openings. You then customize this basic structure to include doors, windows, skylights, etc., to suit your intended application.

Made in USA
Steel I-Beam
Custom Kits
30 Yr Warranty

Common Standard Size Buildings

30x40 steel frame building

30x40 Buildings

The "30x40" 'Red Iron' building is the 'workhorse' of the prefab building world, providing 1,200 square feet of column-free space. It is ideally suited to end uses, including multi-car garages, small workshops, storage barns, or as a small warehouse. Pick a standard height of 10' to 22' to meet your access requirements. All kits are manufactured to your specification and can be installed by a professional crew in as little as 2-3 days.

Specs & Features
30x50 Metal kit building package

30x50 Buildings

A 30'x50' steel building is a great investment for anyone looking for a durable structure for a home, hobby, or farm outbuilding storage solution. With 1,500 sq ft of clearspan space, this structure can be used for various applications, including - large garages, mechanic shops, and ag storage buildings. With its durable construction and many customization options, a 30x50 building can be tailored to fit your specific storage requirements.

Specs & Features
30x60 steel framed structure

30x60 Buildings

With 1,800 sq. ft. of wall-to-wall space, prefab 30'x60' buildings are well suited to various end uses. They offer ample floor space for diverse applications such as outbuildings, commercial dog kennels, RV garages, and even mid-sized family homes. A building of this size can be ready for occupancy in as little as 3-5 days with a professional crew or in as little as a week for a DIY build.

Specs & Features
40x40 metal kit building

40x60 Building

The “40 by 60" is the market's #1 selling metal frame building. Its versatile 2,400 square feet of clear-span space is well suited to light industrial, residential, and farm applications. The generous floor space gives you many layout options and floor plan possibilities (even more if you add a second story!). Popular applications include flex warehousing, workshops, shops with living quarters (Shouses), and family-sized homes. Engineered with durable solid I-beam steel framing, 40 by 60 buildings can be erected in as little as 4-7 days.

Specs & Features
50x80 red iron building

40x80 Buildings

Bolt together 40'x80' buildings are built to last, are engineered to withstand the harshest environments, and come with warranties of 30+ years. They're also virtually maintenance-free. For a slightly higher investment, you get a custom, commercial-grade, solid steel framed (not light gauge) building that adds value to your property.

Specs & Features
50x80 steel frame building

50x80 Buildings

Looking for a cost-effective, maintenance-free building solution that’s built to last? Prefabricated 50'x80' metal structures are made from American-made steel and are engineered to meet your local building codes. With 4,000 sq. ft. of unobstructed space, they are ideal for large Shouses, retail spaces, office warehouses, and more. All building kits are manufactured to your specifications and can be customized to suit your specific application.

Specs & Features
50x100 steel pre-engineered structure

50x100 Buildings

With 5,000 sq ft of clearspan space, pre-engineered 50'x100' steel buildings are one of our most versatile and popular commercial buildings on the market. They are ideally suited to modern warehousing facilities, professional auto repair shops, large open-concept Barndominiums, and more. All buildings are custom engineered to meet your local codes, and their bolt-up design makes them a fast and economical construction option.

Specs & Features