Barndominium Kits in Idaho: Kits for Sale, Prices & Shell Kits
Our barndominium kits in Idaho are the structural shell of the house: the frame, secondary framing, roof and wall panels, fasteners, trim and the drawing set, delivered to your land and assembled on your foundation. Sellers also call it a shell kit, a metal building kit or a kit home. In Idaho the thing that decides whether a kit fits is snow. The design criteria, including the ground snow load, are set by the city or county building department that serves your land, and they change a great deal between the Treasure Valley floor and a mountain valley, so we size the kit to your site's figure before it is quoted.
Barndominium Kits for Sale in Idaho
A barndominium kit for sale in Idaho should be quoted for one parcel, not for a catalogue. The same 40 by 60 building can need a far heavier roof in a high valley than on the Boise bench, because NOAA's climate summary for the state notes that the higher elevations of northern and central Idaho get up to four times the rain and snow of the low southern plains. So the first thing we ask is where the land is, and the first thing we confirm is the snow load the local building department requires there.
From there the kit is the building you want: footprint, eave height, a shop bay with a tall overhead door, a lofted living wing, a porch. We supply steel barndominium kits with a red-iron frame and pole barn home kits with laminated or treated posts and trusses, each with the frame manufacturer's stamped drawings. You can stand the kit yourself, hire an erection crew, or have us build the whole house.
Barndominium Kit Prices
We do not publish a price list, and the reason is honest rather than coy: a kit price quoted before the snow load, spans and door openings are known is a number that moves. Two kits of the same size can differ a lot once one of them is sized for a mountain valley roof load and a pair of 14-foot shop doors.
When you compare kit prices, check what each one includes. A shell kit is the frame, panels, trim and fasteners; foundation, insulation, windows, interior framing, plumbing, electrical and HVAC are separate, and together they cost more than the shell. Check freight to your land and who unloads it. And allow for sales tax: the Idaho State Tax Commission treats building materials as taxable, so a supply-only kit carries Idaho sales tax, while on an installed contract the contractor pays the tax on materials and it is built into the price. Our cost guide sets out finished-cost figures from third-party sources.
Modular, Prefab and Manufactured Barndominiums: How a Kit Differs
People searching for barndominium modular homes, prefab barndominiums or manufactured barndominiums are usually looking at three different products, and Idaho law treats them differently. Idaho Code defines a modular building as one of closed construction, built wholly or mostly away from the site with structural, plumbing or electrical work enclosed where it cannot be inspected on site. No modular building may be installed in Idaho unless it carries the insignia of approval of the Division of Occupational and Professional Licenses, which plan-reviews and inspects modular units in the factory.
A manufactured home is a third product again: built to the federal HUD manufactured home construction and safety standards, on a permanent chassis, and transportable in sections. "Prefab" is a looser word that sellers use for all of these, and for kit homes too.
A barndominium kit is none of those. It is prefabricated in the sense that the steel or the posts and trusses are cut and fabricated off site, but it is a site-built frame package: it goes up on a permanent foundation on your land, open for inspection, and where a city or county runs a building program it is permitted and inspected there under the Idaho residential code like any other house. We supply kits and build barndominiums. We do not sell modular buildings or HUD-code manufactured homes, and if one of those suits your land and budget better, we will say so.
Barndominium Shell Kits
A barndominium shell kit is the dried-in outside of the building and nothing inside it: frame, girts and purlins, roof and wall panels, trim, and usually the framed openings for doors and windows. It suits owners who want to finish the inside themselves, or in stages, and it is the most common way people start a kit home in Idaho. Plan the insulation before you order the shell, because the way a steel roof is insulated and vented against condensation decides what the purlins, liner and trim need to be.
Pole Barn Home Kits
If you would rather build on posts than on a steel frame, a pole barn home kit is the other common route: laminated or treated posts, engineered trusses, girts, purlins and steel cladding, finished inside as a house. Our pole barn homes page covers how those kits differ from steel and where each makes more sense.
Barndominium Kits: how the work runs
Four stages, in this order. The sequence matters more than it looks: settling the zoning, the septic site evaluation, the snow load and the building permit before anything is fabricated is what keeps an Idaho build from stalling.
Size, layout and the shop split
We start from footprint, eave height, door and window openings, and how much of the building is living space versus shop. That split drives the frame more than square footage does: a wide shop door in a gable wall, a tall eave for a camper or a tractor, and a lofted living wing each change the members. Settling it first means the kit is quoted once, not three times.
Your site's snow load
The city or county building department that serves your land sets the design criteria for it, including the ground snow load and frost depth. We confirm those figures for your parcel and the frame manufacturer's professional engineer sizes the frame and roof to them, so a kit for a mountain valley is not priced as if it sat on the valley floor.
Fabrication and delivery
The frame is fabricated and delivered on a date you confirm, timed for when the foundation is ready and the site can take a loaded truck. On most Idaho land that means planning around winter and spring thaw: a firm, graded drive and a staging pad beside the slab before the truck arrives, because soft ground will not carry a loaded trailer.
Erection and inspection
You get erection drawings and the anchor bolt layout. Whoever stands the frame, you, an erection crew you hire or our own crew, works from the same drawings, and where a building department serves the land it inspects the framing and connections before insulation and liner panels cover them.
The same kit is a different building in a different valley
NOAA's climate summary for Idaho describes large seasonal temperature swings, cold winters, and higher elevations in the north and centre of the state that get up to four times the rain and snow of the low southern plains. Idaho law lets each city and county set its own design criteria, so the snow load your roof has to carry is set locally. We size every kit to the figure for the land it is going on.
Where we deliver barndominium kits
In Idaho the line that matters is usually a city limit. Inside one, the city zones the land and, where it runs a building program, issues the permit. Outside one, the county zones the land and, if it runs a building program, permits and inspects the house. What changes from place to place is the zoning, the snow load and frost depth the local building department sets, which of the seven public health districts evaluates and permits the septic system, and whether irrigation ditches cross the parcel.
Barndominium builders across Idaho.
Every city and county in Idaho has its own answer on zoning, permits, snow load and septic. The service area pages set out what each one publishes.
What actually decides the price
Square footage is the number everyone leads with, and it is rarely the one that moves a barndominium budget. These four do.
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Ground snow load and elevation
Snow load sizes the purlins, rafters or trusses and the main frame. The building department that serves your land sets the figure, and a parcel at elevation can need a much heavier roof than one on a valley floor, so the same kit can price very differently a county apart.
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Clear span and eave height
A column-free shop floor wide enough for equipment, a camper or a boat needs deeper rafters than a narrow building with interior posts. Taller eaves add wall area, girts and bracing. Both are worth paying for when the shop is the point of the building.
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Openings and door count
Every large overhead door or wide window opening needs framing around it, and a big shop door in a gable end changes the end-wall design. Door count and size move a kit price more than most people expect.
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Freight, tax and what is included
Compare kits line by line: frame only or full shell, trim and fasteners, drawings, freight to your land and who unloads it. Building materials in Idaho carry sales tax, either charged on a supply-only kit or paid by the contractor and built into an installed price.
Barndominium Kits in Idaho: common questions
8 questions we get asked most often about building in Idaho. If yours is not on the list, ask it directly.
What is included in a barndominium kit?
Is a barndominium kit the same as a modular home?
What snow load is a barndominium kit in Idaho designed for?
Do I pay sales tax on a barndominium kit in Idaho?
Do I need a building permit for a kit barndominium in Idaho?
Can I put up the kit myself?
What does "prefab barndominium" mean?
Is a kit cheaper than a builder-delivered barndominium?
Sources
- Idaho Code 39-4301, modular buildings: definitions — Idaho Legislature
- Idaho Code 39-4304, insignia of approval for modular buildings — Idaho Legislature
- Idaho Code 39-4105, definitions (manufactured home) — Idaho Legislature
- Idaho Code 39-4116, local adoption and enforcement of building codes — Idaho Legislature
- IDAPA 24.39.31, Rules for Modular Buildings — Idaho Division of Occupational and Professional Licenses
- Contractors Working in Idaho (sales and use tax) — Idaho State Tax Commission
- State Climate Summaries 2022: Idaho — NOAA National Centers for Environmental Information
Keep reading
The pages that answer the next question this one raises.
Cost to Build a Barndominium in Idaho
Finished-cost figures from third-party sources, so a kit price is read in context.
Read itPole Barn Homes
Pole barn home kits: the other common kit route, and how it compares with a steel frame.
Read itFloor Plans
Starting layouts by footprint and feature, ready to be sized into a kit.
Read itReady to put barndominium kits against a real plan? Start there and the rest follows.
Tell us about the land
Tell us where the parcel is and what you want on it, and we will come back with who has jurisdiction, what the land needs before it can be built on, and a realistic budget range. Starting the survey costs nothing.