Pre-Engineered & Custom Steel Buildings
Full-service steel building design, fabrication, and erection out of Prescott, Arizona. From clear-span gable frames to multi-bay column systems, we deliver structures engineered for local snow, wind, and seismic loads and built to outlast the harsh Arizona climate.
.svg.png?dpl=dpl_D74bJGzRoKAAiSHi43qmVzw1iNXK){kind=logo}
“We needed a certified structural welder for our custom home project. Granite Mountain responded right away and worked directly with our framers and timeline to keep the project moving with no interruptions. Very professional, would definitely recommend and will use them again.”
Steel Buildings done right
If you have engineered plans, we shop-fabricate every column, rafter, purlin, and connection to spec, then mobilize a crew to erect on your site. Starting from scratch, we coordinate with engineers to size the frame for your spans, your loads, and your local code, then deliver the same complete package.
One accountable team from layout to last bolt. The frame is engineered for the location it lives in: correct gauge and grade on the primary steel, appropriate bracing and bay spacing, code-compliant anchor bolt patterns, and finishes that hold up to the Arizona climate.
Common projects
A shop or oversized garage
Equipment shops, workshops, and garages sized around what they will hold. We size the frame, bays, and door openings for the equipment, not a catalog template.
Ag buildings and arenas
Barns, hay storage, and riding arenas with wide clear spans, engineered for the snow and wind loads at your elevation.
Commercial and industrial buildings
Warehouses, hangars, and commercial structures with engineered occupancy, mezzanines, and crane runways where the operation calls for them.
Plans in hand, ready to build
If your building is already engineered, we fabricate to the plans and erect on your foundation, coordinating anchor bolt placement with your concrete crew.
If your project is not listed here, call and describe it. We take on a wide range of custom welding and fabrication work.
Getting an estimate
Call or send the quote form
Call or text 928-910-3805, or use the quote form. Describe the building: footprint, height, doors, and what it needs to hold.
Engineering and estimate
We size the frame for your location's snow, wind, and seismic loads, coordinate engineering, and quote the package with a timeline.
Shop fabrication
Columns, rafters, purlins, and connections are fabricated to spec in our shop.
Erection on site
Our crew erects the frame on your foundation. We coordinate close-in, including sheathing, insulation, and trim, through to a lockable shell.
Trusted across Northern Arizona
“We needed a certified structural welder for our custom home project. Granite Mountain responded right away and worked directly with our framers and timeline to keep the project moving with no interruptions. Very professional, would definitely recommend and will use them again.”
“They came over to my job and fabricated some railing and gate to match existing. Outstanding job matching the design. Would highly recommend.”
“Amazing and professional job. We expanded our deck and needed new metal railings plus a gate with a Native American thunderbird on it. The challenge was matching existing railing fabricated over 20 years ago and creating artwork panels from renderings, and making it look like it was all made at the same time. It came out amazing, right down to color matching the paint on the railings.”
Get an estimate for your steel buildings project
Estimates are free and we respond the same day. Licensed, bonded, and insured (ROC #350729).
Steel Buildings Questions
Do you offer pre-engineered metal building (PEMB) systems?
Yes. We work with established PEMB suppliers and can spec, order, and erect a complete pre-engineered system for your site. We also build fully custom steel buildings when an off-the-shelf system does not fit the program or the budget.
What sizes of steel buildings do you build?
Anything from a small 20x30 shop or storage building up through multi-bay commercial and agricultural structures over 100 feet wide. Clear-span gable frames, modular column systems, and lean-to additions are all in scope.
Do you handle erection on site, or just fabrication?
Both. We can fabricate to a contractor's specs and stop at delivery, or we can mobilize our own crew with crane and rigging support to erect the building on your site. Most clients prefer the full package because it keeps responsibility in one place.
Can you help with engineering and permitting?
Yes. We coordinate with structural engineers to size the frame for your specific loads (snow, wind, seismic) and produce the stamped drawings your jurisdiction needs for permit. We do not pull permits ourselves but we provide the drawings and documentation your contractor or owner-builder needs.
What about foundations and anchor bolts?
We supply the anchor bolt layout and reaction loads your foundation contractor needs before they pour. If you want a single point of contact, we can coordinate with a local concrete sub so the slab and the steel arrive ready for each other.
Let's Build Something Extraordinary
Whether you need structural steel fabrication, custom architectural metals, equipment repair, or a one-of-a-kind functional art piece, we're ready to bring your vision to life. Tell us about your project today.
We respond to all inquiries within 24 hours.