How this calculator prices a barndominium
The building is priced the way a barndominium is bought: a steel kit and its assembly per square foot of footprint, a concrete slab under all of it, and then the home finished inside. Doors and windows are priced per item, spray foam per square foot of wall and roof, drywall, paint and flooring per square foot of living space, and the wiring, plumbing and HVAC by the size of the home. A shop area shares the shell and the slab but skips the interior finish, which is why a shop house costs less per square foot than a barndominium that is all home.
Every rate is an installed price from HomeGuide's 2026 barndominium guide, or from its new-house and drywall guides where the barndominium guide gives no figure. The basic and high-end finish choices use the lower and upper halves of each finishing range; typical uses the whole range, which is why it gives the widest band.
How this compares with a flat per-foot price
HomeGuide prices a barndominium at a flat $65 to $160 per square foot, or $130,000 to $320,000 for 2,000 sq ft, without land. This calculator's 2,000 sq ft default comes out a little higher because it also prices the well, septic system, power run, site clearing and survey that a raw rural lot needs. Take those out, for a lot with water, sewer and power already at the site, and it lands at about the same range.
A flat rate also treats a 1,200 sq ft starter home and a 5,000 sq ft shop house the same way per foot. In practice a kitchen, an HVAC system, a well and a septic system cost about the same at any size, so small barndominiums cost more per foot and large ones less. The size table below shows how much.
FAQ
How much does it cost to build a barndominium in 2026?
A 40 x 50 (2,000 sq ft) barndominium with 12 ft walls, typical finishes, a drilled well, a septic system and a 150 ft power run runs about $147,700-$360,200 to build at national average prices, not counting the land. HomeGuide's 2026 guide puts a 2,000 sq ft barndominium at $130,000 to $320,000. Finishes, size and how much site work the lot needs move the price the most.
What does a barndominium cost per square foot?
The default 2,000 sq ft build works out to about $74-$180 per square foot, including the well, septic and site work. HomeGuide gives $65 to $160 per square foot. Small barndominiums cost more per foot because the kitchen, HVAC, well and septic cost about the same at any size.
How much does a 40x60 barndominium cost?
Finished entirely as living space (2,400 sq ft), a 40 x 60 runs about $170,300-$411,100. Built as a shop house, with 1,600 sq ft of home and an 800 sq ft insulated shop with two overhead doors and 14 ft walls, it runs about $159,400-$377,600. Both include a well, septic and site work.
How much does a barndominium shell or kit cost?
HomeGuide puts a barndominium kit at $20 to $35 per square foot for materials and $30 to $50 with on-site assembly. A 40 x 60 dry-in shell, with the kit assembled on a concrete slab, two overhead doors, eight windows, two entry doors, plans, survey, clearing and a permit, runs about $95,400-$186,200. The inside, the utilities and the systems are still to come.
How much do the well, septic and site work add?
On a raw rural lot, the default build's 150 ft well, septic system, 150 ft underground power run, site clearing and survey add about $10,900-$33,500. On a lot with city water, sewer and power at the site, the same 2,000 sq ft barndominium runs about $136,800-$326,800.
How much does a barndominium with a large shop cost?
A 50 x 80 shop house with a 2,400 sq ft home, high-end finishes, two HVAC systems, custom plans and a 1,600 sq ft insulated shop runs about $293,100-$571,500, including a 200 ft well and septic.
Is a barndominium cheaper than a traditional house?
Usually, for the same size and finish. HomeGuide puts a builder-grade house at $180 to $280 per square foot and a barndominium at $65 to $160. The steel shell goes up quickly and needs no load-bearing interior walls, but the interior finishing costs about the same either way, so a barndominium with high-end finishes can cost as much as a house.
How much can I save building a barndominium myself?
In DIY mode the default build comes to about $113,100-$283,900. That counts the kit at its full price, the work an owner can do (windows, doors, drywall, paint, flooring, interior doors, cabinets) at 50-60% of the installed price as materials, and the slab, spray foam, wiring, plumbing, HVAC, well, septic and power at installed prices because most owners hire them out. Permit fees are not counted in DIY totals.
How long does it take to build a barndominium?
HomeGuide puts it at about 6 months or longer for larger or more customized homes, against 12 months or more for a typical house. The kit shell itself goes up in weeks; the interior finishing, inspections and utility work take most of the time.
Can you get a mortgage for a barndominium?
Yes, but it is harder than for a conventional house because there are fewer comparable sales for an appraiser to use. Farm credit lenders and banks that have financed barn homes before are the usual route, and detailed plans, a materials list and a timeline help. Check that the lot is zoned for a residence before you buy it.
More questions
Steel frame or post-frame?
Barndominiums are built two ways: a red-iron steel frame with metal skin, or a wood post-frame (pole barn) building finished as a home. Steel spans wider without posts and resists rot and termites; post-frame is often cheaper for smaller buildings and easier to finish inside with conventional materials. The kit prices on this page cover either kind of shell. For a building without living space, use the pole barn calculator.
How big a barndominium can I build for my budget?
Work backward from the per-square-foot figure for your finish level, then take off the lot costs (well, septic, power, clearing), which do not shrink with the house. A shop area is a cheap way to add floor space: it costs the shell and slab but not the interior finish.
Do barndominiums hold their value?
They can, but the resale market is narrower than for a conventional house, and an appraiser may have few comparable sales nearby. A barndominium that looks and lives like a house, on land zoned for it, is easier to sell and to finance than one that reads as a shop with rooms inside.
What about condensation and noise in a metal building?
Both are handled by the insulation. Closed-cell spray foam on the walls and roof stops warm, moist air from reaching the cold steel, and it also deadens rain noise on the roof. Leaving any of the envelope uninsulated, even over the shop, is how condensation problems start.
