Pole Barn Garages: Sizes, Layouts, and What They Cost to Build
A pole barn garage gives you a tough, wide-open place to park vehicles, store equipment, and work on projects, usually for less than a stick-built garage of the same size. Pole barn garages use post-frame construction, which means fewer interior columns, long clear spans, and a building that goes up efficiently. Here’s what to know about sizes, layouts, and what drives the cost.
Why choose pole barn garages?
Post-frame framing carries roof loads through posts set on footings or brackets, so the walls don’t have to be load-bearing the way a stick-framed garage does. That gives you a clear-span interior with no posts in the middle of your parking, wide door openings, and tall eave heights when you want them. For a full primer on the method, see our complete guide to pole barns.

Common pole barn garage sizes
Sizes run from a single bay to a multi-vehicle shop. A few starting points:
- Two car: commonly around 24 to 30 feet wide.
- Three car: commonly 30 to 36 feet wide. See how 3 car garage width is planned.
- Four car or shop combo: 40 feet wide and up.
A depth of 24 to 40 feet and eave heights from 10 to 16 feet cover most needs. For the full range, our pole barn sizes guide lays out dimensions and what fits inside.
Popular layouts and add-ons
The clear-span interior is a blank slate, so most pole barn garages get tailored to how you’ll use them. Common choices include a workshop bay with a concrete floor and a lift, a loft for storage or a bonus room, taller doors for RVs and boats, and a lean-to along one side for covered parking. If a shop is part of the plan, see our pole barn garage workshop combos, and for plans and design ideas, our main pole barn garage guide covers the options.

What affects the cost of pole barn garages?
Size is the biggest driver, followed by eave height, the number and size of doors, concrete, insulation, and finish. We break the numbers down in our pole barn cost guide. We won’t quote a price sight unseen, because site prep, permits, and the options you pick move the total.
The bottom line
Pole barn garages are one of the most cost-effective ways to add covered space for vehicles, gear, and projects. Settle on your bay count, door layout, and eave height, then let the clear-span design do the rest. To size one for your property, request a free quote or give us a call at (800) 833-9997. Steel Structures America builds custom post-frame garages across Idaho, Washington, Oregon, Montana, and Colorado, engineered for local snow and wind loads.