At Simpson Steel Building Company, we proudly serve Idaho with high-quality, pre-engineered steel building solutions tailored to meet a wide range of needs. Whether you’re looking for a metal building for agricultural use, a steel building for storage, or a commercial structure, we offer versatile kits that combine strength, affordability, and ease of assembly. Our patented steel truss design ensures that every metal building we deliver is engineered for durability and cost-efficiency, making it a smart investment for Idaho residents and businesses.
Engineered for Idaho’s Needs
We specialize in manufacturing metal buildings that are ideal for Idaho’s diverse landscape and industries. From mini storage units and airplane hangars to agricultural barns and workshops, our steel building kits are designed to meet local codes and withstand regional conditions. Each kit is pre-engineered with precision, allowing for minor modifications to suit your specific requirements. Our steel truss frame buildings offer the strength of rigid frame structures at a significantly lower cost, thanks to our innovative design approach.
Durable, Affordable, and Customizable
Choosing a professional manufacturer of steel building in California and Idaho like us means you benefit from decades of experience, patented engineering, and a commitment to quality. We’re not a design firm, but we do offer customizable options within our pre-designed kits, ensuring your building fits your purpose without compromising structural integrity. Our buildings are shipped nationwide, and our streamlined online ordering process makes it easy for Idaho customers to get started. If you’re ready to invest in a metal building that delivers on performance, value, and longevity, request a free quote. Simpson Steel Building Company is here to help. Contact us today to explore your options and get started on a structure that works as hard as you do.
Simpson Steel Building Company has been providing metal buildings in Idaho for over 40 years. The majority of steel buildings we provide in Idaho are used for agricultural purposes, grow houses, garages and shops, and residential houses. Simpson provides complete engineered plans, engineered design calculations, and even engineered foundation plans by a licensed Idaho engineer that you will need to obtain your building permit.

Our bolt-together building kits are easy to assemble and only require a forklift or tractor with tongs to move around. This makes our building kit the perfect solution for any Idahoans looking for an affordable DIY Kit for their project needs. Speaking of projects, our buildings work great for a multitude of uses, such as hay barns, stables, garages, shops, commercial buildings, and barndominium homes! In the event that you want someone to erect the building for you, we have a list of local contractors we can refer to help with that aspect of the project.
Simpson offers 18” roof overhangs for our building packages. These can be a very important addition in Idaho, particularly in areas with higher than normal snow load requirements. Adding overhangs to you buildings roofs not only enhance the buildings looks, they also help push any snow that is falling off the roof away from the buildings doors and foundation. Some building owners will use gutters & downspouts, others believe that the snow can break the gutters off too easily and elect to go with the overhangs. We also provide insulation packages of 3”, 4” and 6” thicknesses. Adding insulation to your building will help with climate control and will also help reduce any kind of condensation build up during the hotter months. This will be key to protecting your personal belongings and valuable items that you are storing.

Our Products
Whether you are looking for a simple metal building for sale or something that incorporates a more complex design, our experts can handle the job at hand. Some of the projects and structures we provide for our clients include:
- Idaho Agricultural Steel Buildings
- Steel Airplane Hangars In Idaho
- Idaho Churches
- Idaho Metal Garages and Workshops
- Industrial and Commercial Steel Buildings in Idaho
- Idaho Mini Storage Buildings
- Idaho Residential and Barndominium Buildings
This list isn’t comprehensive, so please reach out to our experts if you have another project in mind that isn’t on this list. Simpson Steel Building Company is able to manufacture our high-quality pre-fabricated buildings thanks to our unique steel truss designs. This metal truss is similar in shape to a wooden truss with a bottom cord except made entirely out of quality metal. We also use 26-gauge metal sheeting which is heavier and provides more durability. Twelve-gauge red iron structural steel is also used to provide additional strength and quality.
Advantages of Simpson Steel
The main advantage of doing business with Simpson is two-fold: we offer the highest level of quality & customer service at the most economical pricing.
- Over 5000+ buildings completed nationwide – chances are, there is a Simpson Steel building within 50 miles of where you live!
- Steel buildings shipped in all 50 U.S. states, including Idaho
- Engineering available for all 50 U.S. states
- UL 90 approved system
- Quick and efficient turnaround
- Drawings 10 days to 2 weeks, where industry standard is 3-4 weeks
- Anchor Bolt Plan can be provided as needed
- Delivery 2-3 weeks after receipt of signed fabrication release, where industry standard delivery is 8-12 weeks
- Dun & Bradstreet Superior Rating
Flexible, Inexpensive Shipping
- We ship from over 15 plants nationwide making freight cost affordable.
- Our metal buildings delivered in California are shipped directly from a steel plant located right near Salt Lake City, UT
- Freight cost is always included in the pricing of your Simpson Steel metal building
- Materials are nested together for economical shipping
- Insulation is shipped in a covered van to protect the product from the elements
- Clips and gusset plates are shipped via UPS Ground Service
- It is the responsibility of the customer to unload the building upon arrival
- Our mini storage kits include rollup doors that will be delivered separately from the building materials
Contact our Steel Building Experts Today
If you’re in the market for a pre-engineered steel truss frame building, look no further than Simpson Steel for your next project. Considered the experts in steel truss for nearly 40 years, our experienced team can help guide you in designing your steel structure. Contact us at Simpson Steel Building Company or request a steel truss frame quote.
Frequently Asked Questions
What makes your steel truss design more cost-effective than traditional rigid frames?
Our patented steel truss system uses design efficiency rather than heavy materials to achieve strength. This reduces the amount of steel required, lowering costs by approximately 30% compared to rigid frame buildings. It also simplifies transportation and assembly, saving time and labor.
Can your metal buildings be used for residential purposes in Idaho?
Yes, many Idaho customers use our metal buildings for garages, workshops, and even barndominiums. While our kits are not fully customizable like architectural designs, they offer flexibility for residential applications with proper planning and local code compliance.
Do you offer installation services or just the kits?
We specialize in manufacturing and supplying the kits only. However, we provide detailed assembly instructions and support, and many Idaho customers hire local contractors for installation. This approach keeps costs down and allows for local expertise to handle site-specific needs.