Sizing It Right: Backhoes and Pole Barn Door Dimensions

[MikePhua]

The Backhoe Dilemma
When planning a pole barn, one of the most overlooked yet critical decisions is door height and width—especially if you intend to store heavy equipment like a backhoe. A common question among landowners is whether popular models like the John Deere 310E or Case 580L can fit through a 12-foot-high door. The answer? Usually yes, but with caveats.
Most backhoes measure between 11'6" and 12'6" in transport height. For example, the John Deere 310C sits at approximately 11'9", while the Case 580K with extend-a-hoe may just squeeze through a 12' door—though hoses and beacon lights might brush the top. Operators often lower the boom slightly to clear the entrance, a maneuver that becomes second nature over time.
Why Width Matters Too
While height is the primary concern, door width plays a major role in maneuverability. A 12' wide door may suffice for straight entry, but backing out or turning can be tight—especially if fencing or other obstacles are nearby. Many experienced builders recommend 14' wide doors for added flexibility, and some go as far as 16' to future-proof their investment.
In Perth, Australia, one operator found that his 4-meter (13.1 ft) tall shed barely accommodated his JD 315SE backhoe. Backing out required precision due to a nearby fence, and he later wished he’d opted for a wider opening.
Zoning and Code Considerations
Building taller or wider isn’t always straightforward. Zoning laws may restrict wall height or require variances for structures over 20 feet. In some counties, building height is measured from the midpoint between the eaves and the roof peak, which can offer wiggle room if trusses are designed strategically.
Sliding doors can also help maximize usable height. For instance, a 13'6" door can be installed in a 14' end wall using custom trusses with notched bottoms to accommodate door tracks.
Lessons from the Field
A retired contractor in Moose Lake, MN shared that his two-story garage was initially flagged by inspectors—until he proved that the legal height was measured halfway up the gable. This allowed him to keep his design without a variance.
In North Carolina, a couple built a barn for their Case 580SE for just $1,700 in materials. The door was 10' wide by 11' high, and they simply left the boom down when entering. Despite rain and a broken generator, they finished the build in 10 days—a testament to DIY resilience.
Pole Barns as Multi-Use Structures
Pole barns are increasingly used for more than just equipment storage. They serve as workshops, hay shelters, and even living spaces. According to Hansen Pole Buildings, small agricultural pole barns range from $7,000 to $18,000, while medium-sized ones can cost up to $40,000. Customization options include sliding doors, cupolas, attic trusses, and more.
Conclusion: Build for the Future, Not Just the Present
When designing a pole barn, it’s tempting to build just enough to meet current needs. But equipment evolves, and so do ambitions. Whether you're storing a backhoe, tractor, or planning for a workshop, door dimensions and layout flexibility are key. As one operator put it, “Every day I wish my door was wider… occasionally I wish it was taller.” That sentiment echoes across farms and job sites alike.