Farm equipment is one of the biggest investments in any operation, and leaving a tractor or combine sitting out in the weather shortens its lifespan quickly. An equipment storage building protects that investment and gives you a dry place to work when a repair cannot wait for better weather. So how do you plan one that fits your operation, rather than one you’ll outgrow in five years? It comes down to sizing, flooring, permitting, and several practical details that are often overlooked.
This guide covers what Virginia farmers need to know before breaking ground, from choosing the right dimensions to understanding the state’s farm building exemption.
Why a Dedicated Storage Building Matters
Equipment left outside is exposed to sun damage, rust, rodent nests, and weather-related wear that add up over the years. A dedicated farm equipment storage building slows all of that down considerably and keeps tools and machinery organized and ready to go, rather than scattered across the property under tarps.
Think about the difference between a shop that has a place for everything and one where you spend twenty minutes hunting for a part before you can start the day. A well-planned building saves time every season and protects the resale value of equipment you may eventually sell.
Sizing Your Farm Storage Building Correctly
The single most common mistake farmers make is building too small. Equipment dimensions grow with nearly every model year, and a storage building sized for last decade’s tractors often cannot fit what rolls off the dealer lot today. A mid-size grain operation typically needs at least 60 by 80 feet of space to store two tractors, a combine, a grain cart, a planter, and a tillage tool, with adequate clearance. The general rule of thumb is to size the building 20 to 30 percent larger than the current equipment lineup to account for future purchases.
· General Sizing Guidelines
Building size depends mainly on how many machines you own and how much room you leave for future purchases. The table below offers a starting point based on typical operation sizes across Virginia.
· Measuring Before You Build
Measure every piece of equipment that will live inside the building, including folded headers, raised augers, and extended mirrors. One simple approach is to add 2 feet of clearance on both sides of the equipment, plus an additional front-to-back buffer for safe maneuvering.
· Door Height and Width
Undersized doors cause more daily frustration than almost any other feature. A door width of at least 16 feet works well for combines, while 14 feet suits most tractors, and door height should reach at least 14 feet to clear GPS antenna mounts and exhaust stacks. If your lineup includes oversized implements, plan one larger opening specifically for that equipment.
· Ceiling Clearance
Beyond door height, interior ceiling clearance needs to account for raised loaders, folded planter wings, and any equipment with a cab. Building a few extra feet of height now costs far less than modifying the structure later.
Choosing the Right Building Layout
A tractor storage building works best when the layout matches how equipment moves in and out daily. A drive-through design with doors on opposite ends lets you pull equipment straight in and out without backing up, which saves time and reduces the odds of an accidental scrape against a wall or post.
Not sure what size or layout fits your operation? Integral Construction, a trusted pole building contractor in Winchester, VA, can help you plan a building that fits your equipment today and grows with your operation.
Choosing Between Gravel and Concrete Flooring
Flooring is one of the highest-cost and function decisions in any storage building project, and the right choice depends on how the space will actually be used.
· Gravel Floors
Gravel is the lower-cost option and drains well, which matters when you pull a wet tractor into the barn after a day in the field. A proper gravel floor typically includes geotextile fabric over native soil with 6 to 8 inches of compacted gravel, topped with a finer surface for a smooth finish, at a cost of roughly $2 to $3.50 per square foot installed. The tradeoff is that gravel is harder on jacks and small wheels, and it can allow moisture to wick up into stored equipment over time.
· Concrete Floors
Concrete costs more upfront but gives you a clean, level surface that makes maintenance work far easier. A 4-inch slab with wire mesh reinforcement runs about $5 to $7 per square foot and suits light vehicles, while a 6-inch slab with rebar, priced around $6 to $10 per square foot, is recommended for heavy equipment and commercial use. Concrete also holds up better against oil spills and tends to raise resale value.
· A Practical Middle Ground
Many farmers split the difference by pouring concrete only in the workshop or high-traffic bay and leaving the remaining storage area as gravel. This keeps costs down while still giving you a solid surface exactly where you need it most.
Do You Need a Permit in Virginia?
This is one of the most common questions Virginia farmers ask before building. Farm buildings and agricultural structures are excluded from the standards set by the Virginia Uniform Statewide Building Code if they meet certain criteria, though they are not exempt from local zoning regulations. To qualify, the structure must be used for a purpose directly related to an operating farm, such as storing farm machinery, equipment, or supplies used on the farm.
A few important notes apply to this exemption:
- The building cannot be used for residential purposes of any kind.
- Electric, plumbing, gas, and HVAC work is not exempt and will still require permits.
- Most counties require that an affidavit be signed confirming that the structure qualifies as a farm building.
- Zoning approval is still required even when the building code exemption applies.
Because requirements vary slightly by county, confirm the exact process with your local building department before you start.
Planning for Future Expansion
A storage building is a long-term investment, so it helps to think a few years ahead before finalizing the layout. Small adjustments made now can save you from a costly rebuild later.
· Leaving Room to Grow
Operations change, equipment gets bigger, and storage needs shift. Leaving space at one end of the building, or choosing a post-frame design that can be extended later, makes future growth far less expensive than starting over.
· Adding a Lean-To
A lean-to is one of the most cost-effective ways to add covered space to an existing building. It typically attaches along one side of the structure and suits equipment that does not need full enclosure, such as trailers or seasonal attachments.
· Ventilation and Moisture Control
Whatever the final layout, plan for ridge vents or gable vents to reduce condensation on stored equipment, especially with concrete flooring, which can trap moisture against metal surfaces without adequate airflow.
Frequently Asked Questions
Here are quick answers to the questions property owners ask most before starting a project.
Most mid-size operations need at least 60 by 80 feet to comfortably store two tractors, along with a combine, planter, and tillage tool. Always measure your equipment and add clearance before finalizing dimensions.
Buildings that meet Virginia’s farm structure exemption are generally exempt from the state building code, though zoning approval is still required and an affidavit is often needed.
Gravel costs less and drains well, making it a solid choice for general storage, while concrete offers a cleaner, more durable surface better suited for workshop space and heavy equipment traffic.
Yes, a lean-to is a common and cost-effective way to add covered storage space along the side of an existing building without the expense of a full standalone structure.
Standard tractors generally need a door width of at least 14 feet, while combines and larger implements often require openings of 16 feet or more.
Conclusion
Planning an equipment storage building comes down to a few core decisions made early. Size it generously, choose flooring that matches how you will use the space, confirm whether the farm exemption applies, and leave room to grow. Get those pieces right, and the building will protect your equipment and support your operation for years to come.
Ready to plan a storage building that fits your farm? Integral Construction has years of experience building equipment storage buildings that Virginia farmers depend on. Reach out today for a free site visit and written estimate.