About us
We supply steel buildings and we install them
AMF Steel Buildings supplies engineered red iron building packages nationwide and puts them up with our own installation crews. We specialize in large-format structures — the size where engineering, freight and crew economics work in your favor.
Rated 5 out of 5 stars.5-star trusted steel building company
25+
Years in steel
5,000+ sq ft
Specializing in
200'+
Clear spans to
48 continental
States served
Company info
We handle as much — or as little — of the steel scope as you need: building package and delivery, or the package plus installation by our own crews. We are not a general contractor — site work, slab, permits and finish trades stay with your local team, and we coordinate with them. Our crews are steel erectors who set and sheet the building shell, not licensed general contractors.
Every building is engineered and code-stamped for its jurisdiction, fabricated in the U.S. mainland, with freight coordinated straight to your job site.
Headquarters
AMF Steel Buildings Inc.1507 Gold Hill St
Castle Rock, CO 801091-800-204-7199info@amfsteel.comService areas
Our team

Family owned & operated
A family-owned national steel building company
AMF Steel Buildings is family owned and operated. We supply engineered metal building kits to contractors, DIY builders and owner-operators across North America, and we also provide professional steel building erection with our own experienced steel crews. When you request a price quote, just ask for installation to be included in your estimate.
- Family owned and operated since 1998
- Installation crews coast to coast, 48 continental states
- Supplied and installed packages available
- Specializing in buildings over 5,000 sq ft with clear spans to 200'+
Project consultants
Scope your footprint, bay spacing and openings, then price kit-only, supplied-and-installed or installation-only options.
Detailers & engineers
Stamped structural drawings for your jurisdiction's wind, snow and seismic loads, with anchor bolt plans for your slab contractor.
Installation crews
Insured steel erection crews mobilized nationwide for frame setting, sheeting, doors and trim.
Engineered & stamped
Structural drawings stamped for your local wind, snow, and seismic loads.
Code-compliant design
Built to IBC, ASCE, MBMA, and AISC standards for commercial steel structures.
Red iron framing
Primary rigid frames and secondary members fabricated to engineered shop drawings.
Nationwide delivery
Freight coordinated straight to your job site anywhere in the lower 48.
Reviews
5-star rated steel building company
AMF handled the full process from stamped drawings to installation. The crew was on site when promised and the building came out exactly as quoted.
We bought a steel building kit for our project and the piece-marked steel made assembly straightforward. Their detailers answered every call.
Our large building needed a long clear span and AMF delivered. The supply-and-install approach let us focus on operations instead of coordinating subs.
Talk to us about your building
Send us your project details and a building specialist will follow up with pricing and next steps — no email back and forth required. Prefer to talk it through? Call 1-800-204-7199.
- Supply-only packages or supplied and installed by our own crews.
- Engineered and code-stamped for your jurisdiction.
- Serving the 48 continental states.