Barndominium kits
A barndominium kit is a pre-engineered building package, the steel or post-frame shell and structural parts, delivered ready to assemble on your land. Here is what kits actually include, what they cost by size, the types to choose between, and how to pick a supplier.
What a barndominium kit includes.
A kit is the structural shell, not a finished home. Most barndominium kits include the primary frame (steel columns and rafters or post-frame posts and trusses), roof and wall panels, fasteners, trim, and engineered drawings stamped for your area. Many also include framed openings for doors and windows, and some bundle the doors and windows themselves.
Think of the kit as the weather-tight box. It gets you to a "dried-in" structure fast. Everything inside, plumbing, wiring, HVAC, insulation, and finishes, is a separate cost, the same as it would be for any home. For the full picture beyond the kit, see our barndominium cost breakdown.
Barndominium kit prices by size.
Shell-kit pricing depends on the supplier, your snow and wind loads, and how complete the package is. These are typical ranges for the structural kit only, not a finished home.
| Size | Approx. sq ft | Typical shell-kit price | Best for |
|---|---|---|---|
| 30x40 | 1,200 | $25,000 – $45,000 | Compact home or starter build |
| 40x50 | 2,000 | $40,000 – $75,000 | Mid-size family home |
| 40x60 | 2,400 | $45,000 – $90,000 | Home plus attached shop |
| 50x60 | 3,000 | $60,000 – $120,000 | Large home with workshop |
Ranges are for the structural shell kit only. Foundation, interior finish, utilities, and labor are separate. Always get a written quote that lists exactly what the kit includes.
Popular sizes like the 40x60 and 30x40 dominate kit searches because they balance usable space against cost. Smaller footprints keep both the kit price and long-term upkeep down, which is why a small barndominium is the most common first build.
The three kinds of kits.
A bolt-together steel I-beam frame. The strongest and longest-spanning option, best for wide open layouts and big shops. Usually the priciest shell, but the most durable.
Wood posts set on or in the ground with trusses on top. Lower cost, faster to put up, and easy for experienced builders. The most common budget barndo kit.
Shell plus extras like doors, windows, insulation, or even interior packages. Higher sticker price, fewer surprises, and less sourcing work for you.
What the kit price does not cover.
The number one mistake buyers make is treating the kit price as the project price. The shell is often only a quarter to a third of the all-in cost. Budget separately for the foundation and slab, delivery and crane, interior framing, plumbing, electrical, HVAC, insulation, and all finishes, plus the land and utility hookups if you do not have them. Run the complete numbers on our cost page before you commit to a kit.
Choosing a kit supplier.
Kit quality and pricing vary widely, so compare quotes on the same terms. Ask each supplier the same questions: exactly what is in the package, whether the drawings are engineer-stamped for your county's snow and wind loads, what the lead time is, whether delivery and unloading are included, and what warranty covers the frame and panels. Confirm the kit meets your local building code before you order, and check that your county allows a post-frame or metal home on your parcel.
Kit pros and cons.
- Lower shell cost than custom on-site framing.
- Engineered parts arrive cut and ready, so the frame goes up in weeks.
- Predictable shell pricing makes budgeting easier.
- Wide clear spans give you open, flexible interior layouts.
- The kit is the shell only. Most of the budget is still ahead of you.
- You or your builder still handle the foundation and assembly.
- Financing a kit build can be harder than a finished home.
- Quotes are hard to compare unless you match what is included.
Barndominium kit FAQ.
How much does a barndominium kit cost?
A structural shell kit typically runs $20 to $40 per square foot, which works out to roughly $25,000 for a 30x40 up to about $120,000 for a 50x60, depending on the supplier and your local snow and wind loads. That price covers the shell only, not the foundation, interior finish, or utilities.
Do barndominium kits include everything to finish the home?
No. A kit is the weather-tight shell, including the frame, roof, and wall panels, and sometimes doors and windows. Plumbing, wiring, HVAC, insulation, and all interior finishes are separate costs, the same as with any new home.
What is the most popular barndominium kit size?
The 40x60 is the most searched size because it fits a full home plus an attached shop or garage. The 30x40 and 40x50 are close behind for buyers who want a complete home on a smaller, lower-cost footprint.
Can you build a barndominium kit yourself?
Many post-frame kits are designed for an experienced DIY builder or a small crew, which is part of the appeal. Steel red-iron kits are heavier and usually need equipment and a contractor to erect safely. Either way, the foundation and the interior trades are typically handled by professionals.
Are barndominium kits cheaper than building from scratch?
The shell usually is, because the parts are pre-engineered and go up fast with less on-site labor. The interior costs about the same to finish either way, so a kit saves most on the structure rather than the whole project.
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