A flatbed truck delivering banded steel frame members and stacked metal roof panels to a building site beside a finished concrete slab.

Barndominium Kits in Illinois

Barndominium kits are the fastest way to get a building on your land, and they are where most Illinois buyers start. We supply shell kits and fuller packages, then deliver and erect them, so you are not left with a flatbed of steel and a manual. A shell kit covers the structure and the weather envelope: frame, wall and roof panels, trim, fasteners and door and window openings. A fuller package adds framing for interior walls and more of the finish list. Either way, the kit is ordered to the county you are building in, not to a catalogue default, because snow load and frost depth are set locally. McHenry, Kane and Winnebago counties publish a 30 psf ground snow load, while Peoria County publishes 20 psf. We handle the order, the delivery schedule, the slab or pier layout and the frame erection, and the metal roof is installed by a licensed Illinois roofing contractor. If you want a prefab barndominium without becoming your own general contractor, this is that service.

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Plans checked against your local code
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Barndominium Kits: how the work runs

Four stages, in this order. The sequence matters more than it looks: getting the structural design and permitting settled before anything is fabricated is what keeps a build from stalling.

1

Pick the kit level

We start with what you want to do yourself and what you want done for you. A shell kit gets the building closed in; a fuller package carries more of the interior. We walk through the floor plan, the doors and openings, the porch and shop bays, and the finish level so the kit list matches the house you are actually building rather than a stock bundle.

2

Order barndominium kits to your county

Before anything is ordered we pull the design figures your building department publishes, because the kit has to be sized to them. Unincorporated Will County publishes a 42-inch frost line and a 30 psf ground snow load when taking reductions; Peoria County publishes 42 inches and 20 psf. Where a county asks for sealed drawings, a licensed Illinois design professional seals them before the kit is released for manufacture.

3

Delivery and site readiness

We schedule delivery against your slab or pier work so materials are not sitting on wet ground for weeks. The pad, driveway access and laydown area are set out before the truck arrives, and the septic reserve area is fenced off where you have one, because the Illinois private sewage code keeps driveways, slabs and accessory buildings off that ground and protects it during construction.

4

Erection and close-in

Our crew stands the frame, sets the wall panels, openings and trim, and coordinates the metal roof with a licensed Illinois roofing contractor. Plumbing rough-in is done by Illinois-licensed plumbers. Passive radon pipe goes in under the slab, as the Illinois Radon Resistant Construction Act requires in every new home. You end with a dried-in building ready for the finish stage you chose.

A red oxide primed structural steel frame partly erected on a concrete slab, showing bolted knee joints and anchor bolts.
Kits built to where you build

A barndominium kit is only as good as the county it was sized for

Illinois does not issue residential building permits or set one frost line or snow load for the whole state. Your city, village or county does, if it has adopted a building code, and since January 1, 2025 any code a city, village or county adopts must regulate structural design at least as strictly as the International Residential Code (20 ILCS 3105/10.18). That is why the same kit is not right everywhere. McHenry, Kane, DeKalb, Winnebago and Will counties each publish a 42-inch frost line, while Tazewell County's garage handout uses 36 inches. Peoria County publishes a 20 psf ground snow load; the northern and collar counties publish 30. We order every kit to the figures your jurisdiction publishes and build it to the code named for your parcel.

Where we deliver barndominium kits

We deliver barndominium kits across Illinois, from the collar counties outside Chicago to Rockford, the Quad Cities, Peoria, Bloomington-Normal, Champaign, Springfield, Quincy, the Metro East and Southern Illinois. Cross a city or county line and what can change is who reviews the drawings, what they charge, and how the land is zoned, so we confirm the authority for your parcel first.

Serving clients across Illinois.

Every locality we build in has its own reviewer and its own fee schedule. The location pages set out who issues the permit in each one.

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Before you commit

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.

  • Shell kit or fuller package

    A shell kit covers the frame, the wall and roof panels, trim and openings. A fuller package adds interior framing and more of the finish list. The more the kit carries, the less you buy separately later, so the comparison that matters is the total for the finished house, not the kit line alone.

  • Your county's snow load and wind figures

    Frame sections, purlin spacing and panel gauge follow the design loads your jurisdiction publishes. A kit ordered to 30 psf ground snow for a collar-county lot is a heavier building than one ordered to Peoria County's 20 psf. We size to the published local figure rather than a catalogue default.

  • Size, spans and openings

    Clear spans, eave height, porch depth and the number of overhead doors drive the steel or timber in the kit more than floor area does. A tall shop bay or a wide porch changes columns, headers and footings, so these choices are settled before the order goes in.

  • Delivery, foundation and erection

    Freight, site access for a long truck, the foundation type the frame sits on and the size of the crew needed to stand it all move the budget. A slab poured to your county's frost depth, piers where the county allows them and a clear laydown area keep erection days predictable.

A flatbed truck delivering banded steel frame members and stacked metal roof panels to a building site beside a finished concrete slab.

Barndominium Kits in Illinois: common questions

8 questions we get asked most often about building in Illinois. If yours is not on the list, ask it directly.

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What comes in a barndominium kit?
A shell kit typically includes the structural frame, wall and roof panels, trim, fasteners and framed openings for doors and windows. A fuller package adds interior wall framing and more of the finish list. Neither includes the foundation, septic, well, utilities or interior finishes unless we quote them separately, and we list exactly what is in and out before you order.
Do you sell barndominium kits in Illinois and put them up too?
Yes. We supply barndominium kits across Illinois and our crew erects them, so the kit, delivery, foundation layout and frame erection are handled by one team. The metal roof is installed by a licensed Illinois roofing contractor, and plumbing is done by Illinois-licensed plumbers.
What is the difference between a shell kit and a turnkey build?
A barndominium shell kit gets the building standing and closed in, and you or your own trades finish the inside. A turnkey build carries the project through to a finished, livable home. Many buyers start with a shell kit and add finish work in stages; we quote both so you can compare.
Does a kit still need a building permit in Illinois?
That depends on where the land is. Illinois does not issue residential building permits; your city, village or county does, if it has adopted a building code. Unincorporated Kane County, for example, requires building permits for all new construction. Where no local code applies, the Illinois Residential Building Code Act (815 ILCS 670) requires the contract for a new home to name the residential code it will be built to.
Why does my county matter if the kit is prefabricated?
A prefab barndominium is built to design loads, and those loads are set locally. Peoria County publishes a 20 psf ground snow load and the northern and collar counties we have checked publish 30. Frost depth also varies: McHenry, Kane, Will and DeKalb counties publish 42 inches, but Tazewell County's garage handout uses 36. The kit and its foundation are ordered to your jurisdiction's figures.
Will I need sealed drawings for a kit?
Sometimes. Unincorporated Will County requires documents signed and sealed by a registered design professional for all new one- and two-family residences. Kane County requires a seal for pier-supported detached accessory buildings. Where your building department asks for sealed drawings, a licensed Illinois design professional prepares and seals them before the kit is manufactured.
Can I put up a barndominium kit myself?
Some owners do. The catch is that Illinois licenses roofing and plumbing work, so the roof on a home and its plumbing are normally done by licensed trades even when the owner handles the rest. Having our crew erect the frame and close in the building takes the heaviest, most time-sensitive part off your hands.
Are there energy rules for a kit home in Illinois?
Yes. The Illinois Energy Conservation Code applies to new homes across the state; the current edition is the 2024 IECC with Illinois amendments, in effect since November 30, 2025. Insulation and envelope details in the kit and the finish package are planned to it from the start.

Keep reading

The pages that answer the next question this one raises.

Is It Legal in Illinois?

Who sets the building rules for your parcel, and why the answer can change at a city or county line.

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Barndominium Cost Guide

What the shell is as a share of finished cost, so the kit price is read correctly.

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Custom Plans

What you need drawn before a kit can be quoted properly.

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Ready to put barndominium kits against a real plan? Start there and the rest follows.

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Tell us about the land

Send the parcel ID or an address and we will come back with what can be built on it, who issues the permit, and a realistic budget range. That conversation costs nothing.

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