Union County, Ohio

Barndominium Builders Union County, Ohio

Turnkey barndominiums, barndominium kits, pole barn homes and shouses for buyers in Union County. Send us your parcel or the land you are looking at and we will quote the build on it.

Get a quote (419) 406-4158

Union County at a glance

Population: 71,721
Building department: Union County Building Department

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Building a barndominium in Union County

We build barndominiums across Union County for families who want land within reach of Columbus, Dublin and the Marysville employers: turnkey steel and post-frame homes, barndominium kits for owners who want to take on part of the work, pole barn homes, and shouses that put a heated shop and the living space under one roof.

Union County is where Columbus growth meets open farm country. Its population grew 14.2 percent between 2020 and 2024, the largest percentage gain of any Ohio county, yet about 78 percent of its land is still in farms, with more than a thousand farms averaging over 200 acres. The growth is concentrated in the southeast corner: Jerome Township and the Marysville area in Paris Township carry most of the new subdivisions. The acreage is to the north and west. Jackson, York, Leesburg, Union, Liberty, Taylor and Millcreek townships all sit at roughly 40 to 75 residents per square mile, which is where 5 to 20 acre parcels still come up. Zoning is handled township by township, so the rules for lot size, setbacks and accessory buildings change as you cross a township line, and a rural lot will almost always need its own well and a septic system approved by the county health department. As barndominium builders serving Union County, we check the township zoning, the health department's septic requirements and the county building department's plan-review requirements for your parcel before we design, so the home is laid out for the land you actually own.

Barndominium services in Union County

Every service we offer is available to Union County buyers. We quote against your parcel rather than a rate card.

Barndominium Kits

Barndominium kits for Ohio land: we check the frame against your local frost depth, snow load and the statewide wind speed before you order.

Custom Plans

Custom barndominium plans and adapted stock floor plans for Ohio, drawn to your site, your local loads and a complete permit-ready set.

Pole Barn Homes

Pole barn homes built as real houses: posts or piers, local frost depth, and condensation control designed in from the first drawing.

Turnkey Builds

One contract from bare land to move-in: drawings, permits, site work, shell and interior finish, delivered by one Ohio barndominium builder.

Metal Homes

Metal building homes finished for Ohio winters: standing seam or ribbed panels, an insulated envelope that stays dry, and eaves detailed for ice.

Shouses

A shouse is a shop and a house under one roof. We design and build them for Ohio buyers with equipment, vehicles, a workshop or a hobby farm.

Steel Construction

A steel barndominium on a red-iron rigid frame: wide clear spans, a frame designed for 115 mph wind, and footings set to your local frost depth.

Site Preparation

Soil, drainage, septic, well, driveway and footings, handled in the right order so your Ohio barndominium starts on solid, permitted ground.

Permitting & Approvals

Zoning, building department, septic, well and driveway approvals for your Ohio barndominium, identified for your parcel and handled for you.

Local facts for building in Union County

Union County's building department, under the County Engineer, is certified by the Board of Building Standards to enforce the Residential Code of Ohio for the county, so a new home goes through plan review, permits and inspections. Four municipalities inside the county are certified in their own right, so a city or village department may cover your parcel instead.

Build conditions for Union County, drawn from the sourced facts on this page. Each local figure is cited in full below.

Residential building department: Union County building department, 233 W 6th St, Marysville, certified by the Ohio Board of Building Standards for residential work
Population growth: 71,721 residents in 2024, up 14.2 percent from the 2020 base, the largest percentage gain of Ohio's 88 counties
Farmland: 1,020 farms on 216,646 acres (average 212 acres), about 78 percent of the county's land area
Zoning: Township zoning: the county's zoning officials list names a township zoning official for each of 13 townships
Septic and well permits: Union County Health Department

Found land near Union County? Send us the parcel and we will check it before you buy.

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Where buyers find land near Union County

We build across these neighbouring areas too. Each has its own building department, zoning and health district, so check the page for the one your land is in.

Delaware County

County page

Madison County

County page

Columbus

Franklin County

The statewide rules, in brief

Ohio has one statewide residential code, the Residential Code of Ohio, adopted by the Board of Building Standards.
The Residential Code of Ohio sets a 115 mph design wind speed statewide. Frost-line depth and ground snow load are left to the local jurisdiction, so we design to the figures published where your land is.
Whether your build is plan-reviewed and inspected depends on whether a building department certified by the Board for residential work covers your land. We confirm which one does before anything is drawn.
A barndominium that people live in is a dwelling, not a farm building. In our reading, the agricultural exemption covers barns, not homes.

More detail in our guides to barndominium rules in Ohio and what a barndominium costs to build.

Building in Union County: common questions

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

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Do you build barndominiums in Union County?

Yes. We build turnkey barndominiums, supply barndominium kits, and build pole barn homes and shouses throughout Union County. Most of the acreage our clients buy is in the northern and western townships, such as York, Jackson, Leesburg, Taylor and Union, where parcels are larger and the county is still mostly farmland.

Do I need a building permit for a barndominium in Union County?

Yes, in most of the county. Union County's building department is certified by the Ohio Board of Building Standards to enforce the Residential Code of Ohio, so a new home needs plan approval, permits and inspections. Several municipalities inside the county have their own certified departments, and if your parcel is inside one of them, that department handles it. You will also need township zoning approval and septic and well permits from the Union County Health Department.

Who handles zoning for a rural lot in Union County?

The township. Union County's zoning officials list names a separate zoning official for 13 townships, so setbacks, minimum lot sizes and accessory-building rules depend on which township the parcel is in. We read the township's resolution for your lot before we draw the site plan.

Is Union County a good place to buy land for a barndominium?

It is one of the better counties near Columbus for it. It grew faster than any other Ohio county from 2020 to 2024, but about 78 percent of its land is still farmland. The new subdivisions are in the southeast, around Jerome Township and Marysville, while the northern and western townships still have fewer than 75 residents per square mile.

How much does it cost to build a barndominium in Union County?

The site is the biggest variable. A farm-country parcel usually needs a well, a septic system designed to the health department's requirements, a driveway and sometimes a long electric run. Then the size, the shell (steel or post-frame) and the finish level set the rest. Send us your parcel and a plan and we will give you a proper quote.

Ready to build in Union County?

Tell us about your land and the home you want. We will confirm which department covers the parcel and come back with a written quote for that site.

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