A building permit submittal package on a desk with rolled construction drawings, forms on a clipboard, and a hard hat.

Barndominium Permits & Approvals in Michigan

Can you build a barndominium in Michigan? Yes. Michigan has one construction code for the whole state, and a barndominium is a house under it, permitted and inspected like any other home. What varies is who does the permitting: your city, village or township may run its own building department, or the county or the state Bureau of Construction Codes may do it instead. We work out which offices your parcel answers to, and line up the approvals in the order they come.

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Does Michigan Allow Barndominiums?

Michigan does not have a separate rule for barndominiums. The Michigan Residential Code applies throughout the state, and for homes the code in force is the 2015 Michigan Residential Code, in effect since February 2016. An update based on the 2021 model codes was put on hold by a July 2025 court order, so the 2015 code still applies. A steel or post-frame house meets the same code as a stick-built one.

Two things are not true, and both get repeated. There is no part of Michigan without a building code: where a township or city does not run its own program, the county or the state enforces the code. And a home is not a farm building. Michigan's code does not cover buildings incidental to the agricultural use of the land, but a house built on a farm, or living quarters inside a barn, is a dwelling and needs a permit.

Who Issues Your Building Permit

Michigan layers the job. A city, village or township may take on code enforcement by ordinance. Where it does not, the county may do it for that township, and where neither does, the state Bureau of Construction Codes enforces the code directly. The state publishes a Statewide Jurisdiction List that shows, unit by unit, whether building permits come from the local unit, the county or the state, and it lists electrical, mechanical and plumbing separately because they do not always match.

The order matters. Zoning comes first: whether a home is allowed on the parcel, its minimum size and its setbacks are usually set by your township, and county zoning applies only where the township has none. Off sewer, the county or district health department permits the septic system under its own sanitary code. An earth change of one acre or more, or within 500 feet of a lake or stream, needs a soil erosion permit, and the building permit is not issued until it is in hand. If the land is enrolled in a PA 116 farmland agreement, a new home generally needs local and state approval too.

Permits & Approvals: how the work runs

Four stages, in this order. The sequence matters more than it looks: settling the zoning, the septic and well permits and the building permit before anything is fabricated is what keeps a Michigan build from stalling.

1

Find the offices

We look up who zones the parcel, which building department serves it on the Statewide Jurisdiction List, and which health department handles the septic system and the well.

2

Zoning and land checks

Whether a home is allowed, its minimum size and its setbacks, usually from the township. We also check for regulated wetlands and floodplain, and whether the land is enrolled in a PA 116 farmland agreement.

3

Site permits

The septic permit from the county or district health department, the well by a state-registered drilling contractor, and a soil erosion permit where the earth change is an acre or more or within 500 feet of a lake or stream. The building permit waits for a required soil erosion permit.

4

Building permit and inspections

The application goes to the enforcing agency with plans drawn to scale and a site plan. Once the permit is issued, the work is inspected in stages through to the final inspection, and plumbing, electrical and mechanical work carry their own permits and inspections.

Overhead view of architectural floor plan and structural elevation drawings spread on a workbench with a scale ruler and pencil.
Local, county or state

One code for the whole state, applied by whoever serves your township

A barndominium on a lot inside a city and one on forty acres in the next township can answer to different building departments, and even to different offices for the electrical and plumbing. The code is the same. Knowing which office is yours before the plans are drawn saves the resubmission that comes from sending them to the wrong one.

Permits & Approvals across Michigan

In Michigan the question that matters is which local unit your land sits in. Who zones it, who issues the building permit, which health department permits the septic system and the well, and who reviews earth changes near water all vary from one place to the next. The service area pages set out who does what for each city and county we cover.

Barndominium builders across Michigan.

Every city, township and county in Michigan has its own answer on zoning, permits and septic. The service area pages set out who does what.

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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.

  • Permit fees

    Building, electrical, plumbing and mechanical permit fees are set by the enforcing agency that serves your land, and they differ from one local unit to the next.

  • Septic and well

    Septic permits come from your county or district health department under its own sanitary code, so soil tests, fees and system requirements vary by county.

  • Wetlands and water nearby

    Filling or building in a regulated wetland needs a state permit, and earth changes within 500 feet of a lake or stream need a soil erosion permit. Both take time and can move the house on the site plan.

  • Plans and living area

    Plans for a detached home of up to 3,500 square feet of living space do not need an architect's or engineer's seal in Michigan. A bigger house needs sealed plans, which adds to the design cost.

A building permit submittal package on a desk with rolled construction drawings, forms on a clipboard, and a hard hat.

Permits & Approvals in Michigan: common questions

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

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Can you build a barndominium in Michigan?
Yes. A barndominium is a house under the Michigan Residential Code, which applies throughout the state. It needs the same permits and inspections as any other home, and your local zoning has to allow a house on the parcel.
Are barndominiums legal in Michigan?
Yes, as homes. There is no statewide ban and no separate barndominium rule. What decides a particular parcel is its zoning and whether it can take a septic system and a well where there is no sewer or public water.
Who issues the building permit for my land?
It depends on where the land is. Your city, village or township may run its own building department; if it does not, the county or the state Bureau of Construction Codes issues the permit. The Statewide Jurisdiction List published by the state shows which one serves your township.
Is there anywhere in Michigan without a building code?
No. The state construction code applies throughout Michigan. Where a local unit does not enforce it, the county or the state does.
Can I build a barndominium on farmland without a permit?
No. Michigan's code does not cover a building incidental to the agricultural use of the land, but a home is not a farm building. A barndominium, or living quarters in a barn or shop, needs a building permit like any house.
Who handles zoning for rural land in Michigan?
Usually the township. Whether a home is allowed on your parcel, its minimum size and its setbacks are set by the township's zoning ordinance where it has one; county zoning applies only where the township has none. Cities and villages zone their own land.
Which code applies to a new home in Michigan?
The 2015 Michigan Residential Code, in effect since February 2016. An update based on the 2021 model codes was put on hold by a July 2025 court order, so the 2015 code still applies.
Do I need an architect for my barndominium plans?
Not for a detached one- or two-family home of up to 3,500 square feet of living space. Garages, basements, attics and open porches do not count toward that figure. A bigger house needs plans sealed by a licensed architect or professional engineer.
What happens if I build without a permit?
Knowingly building in violation of the state construction code is a misdemeanor in Michigan. Unpermitted work also tends to surface when the house is sold or refinanced, and permitting it at the start is far cheaper than fixing it afterwards.

Sources

Keep reading

The pages that answer the next question this one raises.

Can You Build a Barndominium in Michigan?

The longer read on the residential code, zoning and building on rural land.

Read it

Service Areas

Who issues the building permit, and which health department handles septic and wells, place by place.

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Site Preparation

What the soil evaluation and site work involve once the approvals are lined up.

Read it

Ready to put permits & approvals against a real plan? Start there and the rest follows.

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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.

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