AmeriBuilt Steel Structures, Allied Steel Buildings, Armstrong Steel Building Systems and The Home Depot have a variety of options available for prefabricated steel buildings. The size and pricing of the available buildings vary depending on the manufacturer and the amount of customization involved.
Typically the least expensive options are to use standard building size kits. These are available from most suppliers in sizes ranging from small sheds to full-size buildings. Many manufacturers allow users to customize features, layouts and designs for their buildings. These designs are then prefabricated in kits at the manufacturer's facility before being shipped to the desired location and assembled.