What a steel garage really costs — including the parts nobody quotes.

The single biggest lever. Each bay you add is another span of frame, roof, and wall — and at 26 ft the structure steps up to heavier triple-truss construction, a real jump from two-car to three.

One roll-up is included; each additional roll-up adds material and labor, and a walk door or windows add more. Door size follows your eave height, so a taller garage means a taller, pricier door.

Standard is around 10 ft. Raising to 12 ft for a truck or 14–16 ft for an RV adds a per-foot charge and, because the door grows with it, a second cost on top.

Regular is the baseline and A-frame a step up, but the garage twist is that vertical isn't just for snow here — it's required once the building runs wide or long, so span can force the choice.

14-gauge is standard; stepping to 12-gauge framing is what unlocks the higher wind and snow certifications an enclosed, occupied building often needs.

An engineer-stamped build rated to your county's loads costs more but is typically required to legally enclose and occupy a garage — more of a must-have here than on an open cover.

Radiant-barrier insulation, wainscoting, gutters, and a lean-to each add cost — worth it if the garage becomes a shop, skippable for pure storage.