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

Permitting & Approvals in Indiana

Indiana has one residential building code, and it applies everywhere: the 2020 Indiana Residential Code, 675 IAC 14-4.4, which adopts the 2018 International Residential Code with Indiana's own amendments. The state's Department of Homeland Security says in terms that there are no jurisdictions or locations in the state in which the code is not in effect, and since 2023 a city, town or county may not adopt building rules stricter than the state's. What the state does not do is permit or inspect houses. The state's plan review covers Class 1 buildings — commercial and public — while a house is a Class 2 structure whose plans are submitted "as required by local ordinance." Whether anyone issues a building permit or sends an inspector to a barndominium therefore depends on the city, town or county where the land sits, and some of them have no building department at all. Zoning is a separate permit from a separate office, and the septic permit comes from the county health department under a state rule. The job is to find out which of those doors your parcel actually has, and to go through each of them in the right order.

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Permitting & Approvals: how the work runs

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

1

Establish which offices govern your parcel

Three questions, in order. Is the land inside a city or town, or unincorporated? If it is unincorporated, has the county set up a building department — which Indiana leaves optional, since the county legislative body "may, by ordinance, establish a county department of buildings" — or has it designated a single city or county agency to enforce building ordinances throughout the county? And if neither exists, what does that mean on the ground? The Department of Homeland Security answers that last question itself: residential structures "fall under the jurisdiction of the local government entity," and in the event there is no local, "the residential issue becomes a private civil matter." The General Assembly wrote the same assumption into the statute book: its rules on residential plan review apply "only to a city, town, or county that requires a building permit, plan review, or inspection" for a house. The state keeps a directory of local building officials by county, which is where we start — but a directory row is a lead, and the answer we rely on is the one the county or town gives in writing.

2

Zoning and the improvement location permit

Zoning is a different permit from a different office, and in rural Indiana it is often the permit that actually exists. State law lets a zoning ordinance require "an improvement location permit for the erection, alteration, or repair of any structure," and says no such permit may be issued unless the use, character and location of the structure conform to the ordinance. Who issues it varies: a county plan commission, an area plan commission that one county and its towns have joined, or a city whose plan commission reaches into contiguous unincorporated land under its comprehensive plan. Shelby County's application shows how the pieces meet in one office — its improvement location permit form is also used for building, plumbing and electrical permits, asks for a site plan and a Health Department approval form with every application, and lists state design release for commercial construction only. Zoning is also where local choice survives: Indiana's ban on stricter local building rules expressly does not apply to a unit's architectural design standards or its zoning ordinances, so setbacks, lot-size minimums and exterior-material rules are read district by district.

3

Septic, floodway and the other gates

Where a house will not connect to a sewer, the septic permit comes before everything else on site. Indiana's residential on-site sewage rule, 410 IAC 6-8.3, is administered by the local board of health, and it requires a written construction permit signed by the health officer before the start of construction of a residence. The rule also closes a common gap in its own words: approval of a site by the local plan commission or the county recorder "does not constitute approval by the local health officer." The application carries a soils evaluation written by a soil scientist, not a percolation test. Next is flooding. Inside a regulatory floodway, Indiana's Flood Control Act says a person may not erect a permanent structure for use as an abode or place of residence except as the Act authorizes, and the Department of Natural Resources — not the county — is the permitting authority; its Division of Water publishes the application worksheets. Outside the floodway, the local floodplain rules apply. Finally the smaller permits that still stop a job: the driveway and culvert permit from the county highway department, and the notice to Indiana 811 before any digging.

4

Submittal, review, inspection and occupancy

Where a unit does run a residential permit program, Indiana has recently put that program on a clock. Under a 2025 law, once you apply the unit has three business days to say whether the application is complete, a plan review must be finished within seven business days of the completeness notice, and the unit must say whether it can inspect within three business days of a written request. If it cannot, you may use a private provider — a registered architect, a professional engineer or a certified building official — and a unit that promises a review and misses the deadline must issue a permit or limited permit by the next business day. Inspectors are held to a standard too: an official who finds a violation must identify the specific feature and the edition, chapter and section of the code it breaks. One more point that surprises people: Indiana deleted the model code's own administrative sections on fees, inspections and certificates of occupancy, so whether you receive an occupancy certificate, and from whom, is set by local ordinance. We confirm that at the start, so the finish line is known before the first footing is poured.

Overhead view of architectural floor plan and structural elevation drawings spread on a workbench with a scale ruler and pencil.
One code, local doors

Indiana's residential code applies in every county. Whether anyone enforces it on your land is a local question.

Indiana is unusual in how it splits the work. The rules are statewide: the 2020 Indiana Residential Code, 675 IAC 14-4.4, is in force in every location in the state, and every city, town and county "shall require compliance" with the state's building rules. Since 2023 a local unit may not adopt anything that "conflicts with or includes more stringent or detailed requirements" than the state's rules — so the technical code on a lot in Marion County and on a farm in Posey County is the same document. The state even fixes the design figures county by county in its own Table R301.2(1): minimum footing depth, ground snow load and seismic design category are set per county in 675 IAC 14-4.4, not left to local offices. Enforcement is the other half, and it is local and optional. The state reviews plans for commercial and public buildings, not houses; counties may create a building department but are not required to; and where no local program exists, the state's own code office calls residential compliance "a private civil matter." The regime is also mid-transition. A 2026 law abolishes the Fire Prevention and Building Safety Commission and moves its powers to the Department of Homeland Security on 1 July 2027, and the department may not revise or repeal the transferred rules unless the General Assembly authorizes it. For a builder that means the code your drawings answer to is stable, and the work is in finding the local doors.

Where we deliver permitting & approvals

Across Indiana the code is shared, but the office that applies it is not. Cross a city or county line and what changes is who reviews the drawings, what they charge, how the land is zoned, and the county design figures the work is drawn to. Two parcels twenty miles apart can carry different paperwork and a different structural answer.

Serving clients across the entire region.

Every locality we build in has its own reviewer, its own fee schedule and its own filled-in design criteria. The service area pages set out what each one publishes.

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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.

  • Which unit issues the permit, if any

    A parcel inside a city with its own building department, a parcel in an unincorporated county with a county department, a town served by a joint agency and a county with no residential building program at all are four different scopes of work. Permit fees are set by each unit's ordinance, not by the state, so there is no Indiana fee to quote — but a 2026 law now limits them: after 31 December 2026 a unit may not assess a fee "more than is reasonably necessary" to cover the cost of processing and review.

  • Your zoning district and any design standards

    The district text sets setbacks, minimum lot size, whether a shop and a dwelling can share a parcel, and sometimes exterior materials or roof pitch. Indiana has no statute stopping a local unit from regulating metal siding on a house — a 2021 bill to bar local regulation of residential design elements died after second reading. A 2026 law does require every county, city and town to hold a public hearing by 1 January 2027 reviewing its development rules with the goal of increasing housing, including design standards that restrict code-compliant products, so a district's rules are worth re-reading next year.

  • What the soils say about septic

    The septic permit rests on a soils evaluation by a soil scientist, recorded to five feet or to the first layer that cannot readily be penetrated, and it records the depth to seasonal high groundwater and to bedrock. That evaluation decides the kind of system the site can take, and the system decides where the house can go. The scale is large: the Indiana Department of Health counts more than 800,000 on-site systems in use in the state and says local health departments issue more than 15,000 permits a year for new systems.

  • Flood status, and whether it is floodway or fringe

    A regulatory floodway brings in the Department of Natural Resources, whose permit is required under the Flood Control Act before a residence can be erected there, with a nonrefundable minimum state application fee of two hundred dollars. The flood fringe is governed by the local floodplain ordinance instead. Which of the two a building site sits in is a map question we answer before a site plan is drawn, because it can move the house or rule the site out.

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

Permitting & Approvals in Indiana: common questions

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

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Do I need a building permit for a barndominium in Indiana?
It depends on where the land is, and the honest answer comes in two parts. The code is not optional anywhere: a barndominium with living space is a Class 2 structure, and the 2020 Indiana Residential Code, 675 IAC 14-4.4, applies to it in every location in the state. The permit is local. Indiana's code sends Class 2 plans to be submitted "as required by local ordinance," so a city, town or county building department — where one exists — issues the building permit and sends the inspector. Many rural counties run a county building department; some cover their towns through a single joint agency; and some have no residential building program for unincorporated land at all. Separately from any building permit, most Indiana zoning ordinances require an improvement location permit before a structure goes up, and every house that is not on a sewer needs a septic construction permit from the county health department before construction starts. So the useful question is not "do I need a permit" but "which permits does my parcel have," and we answer it in writing for your address before you commit.
What happens if my county does not have a building department?
The code still applies — the state is explicit that it is in effect everywhere — but nobody from government comes to inspect the house. The Department of Homeland Security's code enforcement office puts it plainly: residential structures fall under the jurisdiction of the local government entity, and "in the event there is no local, the residential issue becomes a private civil matter." That is not the same as no rules. The improvement location permit under the county's zoning ordinance, the septic construction permit from the county health department, a Department of Natural Resources permit if any part of the site is floodway, and the county highway department's driveway permit all still apply. What goes missing is the independent check on footings, framing and wiring. If you are building in a place like that, the sensible response is to arrange that check deliberately — Indiana law already recognizes private plan review and inspection by registered architects, professional engineers and certified building officials where a unit does run a program, and the same kind of independent professional can be engaged where it does not.
My land is agricultural. Is a barndominium exempt as a farm building?
No. Indiana's agricultural exemption is written into the definition of a Class 1 structure — the commercial and public category — and excludes a building used "only for an agricultural purpose." A barndominium contains a dwelling unit, and a building containing one or two dwelling units is a Class 2 structure by statute, to which the 2020 Indiana Residential Code applies. Living in a building is not an agricultural purpose. The state's own code office also groups agricultural buildings and houses together as matters for the local government, not as exempt categories. So a barndominium on farmland is built to the residential code and goes through whatever local permits the unit requires. A pure pole barn with no living space is a different building and can sit outside the residential code; the moment a bedroom and a bathroom go in, it is a house.
Can my town or county stop me building a metal-sided barndominium?
It can regulate it through zoning, and you should check before you buy. Indiana's 2023 law stopping local units from adopting stricter building rules expressly leaves out a unit's architectural design standards and its zoning ordinances, and there is no Indiana statute limiting local rules on exterior materials or roof pitch for site-built houses — the one bill that would have done it, House Bill 1114 in 2021, died after second reading. The only statutory limit on residential aesthetics is for manufactured homes, which a barndominium is not. Subdivision covenants can add restrictions of their own. What is changing is pressure rather than prohibition: a 2026 law requires every county, city and town to hold a public hearing by 1 January 2027 reviewing its development rules with the goal of increasing housing, including design standards that restrict code-compliant products. Until your unit acts on that, the district text and any recorded covenants are what decide the question.
Can you handle the permits for my barndominium build?
Yes — permits and approvals are part of every build we take on, and the order matters more than the paperwork. We start by confirming, in writing from each office, who issues the building permit for your parcel, who issues the improvement location permit, and which county health department handles the septic permit. We line up the soils evaluation the septic application needs, prepare the site plan the zoning office asks for, check the flood maps, apply for the driveway and culvert permit, and put the building permit submittal together where one exists. Where a unit offers its own plan review and inspection we use it; where Indiana law lets you choose a private provider instead, we tell you so. If your county has no residential building program, we say that up front and talk through the independent checks worth arranging. To start, tell us where the land is through our project survey and we will come back with the permit path for that address.
How long does it take to get a barndominium permit in Indiana?
The building permit itself now has statutory time limits, which is rare. Under a 2025 law that applies wherever a unit requires residential permits or plan review, the unit has three business days to tell you whether your application is complete, must finish the plan review within seven business days of saying it is complete, and must state whether it can perform inspections within three business days of a written request. If a unit says it can meet those times and then misses the plan review, it must issue a permit or limited permit by the next business day, and if it says it cannot, you may use a private provider and have the unit's review fees refunded, less a convenience fee of no more than one hundred dollars. The other approvals have no statewide clock: zoning, septic and any floodway permit run on each office's own schedule, and the septic application cannot go in until the soils evaluation is done. That is why we start those first.
Does a builder need a licence to pull an Indiana building permit?
Not from the state. Indiana does not issue a state general contractor or home-builder licence, and since 2013 state law has barred cities, towns and counties from creating new requirements that a builder be licensed, certified, permitted, registered or listed in order to build a new home. Two things survive that rule. Local builder licences adopted before March 2013 still stand — Indianapolis's Department of Business and Neighborhood Services, for example, issues a General Contractor licence whose authorized agents apply for permits on the business's behalf. And any unit may still license specific trades such as electricians and plumbers; plumbers are licensed by the state. Some zoning ordinances also require building contractors to post an annual zoning-compliance bond, which the statute sets at one thousand dollars. We register and carry whatever each jurisdiction requires before we pull a permit there.
What should I have in writing before I buy land for a barndominium?
Six things, each from the office that owns the answer. From the city, town or county: whether it issues residential building permits for that parcel, and if not, that answer in writing. From the zoning office or plan commission: the zoning district, whether a dwelling is permitted in it, the setbacks and minimum lot size, whether an improvement location permit is required, and any design standards on exterior materials. From the county health department: its septic permit process under 410 IAC 6-8.3, and a soils evaluation by a soil scientist if the seller has one or will allow one. From the flood maps: whether any part of the building site is floodway, which brings in the Department of Natural Resources. From the county highway department: whether it will permit a drive where you want one. And from the title work: any recorded subdivision covenants. With those six answers a parcel can be judged before money changes hands. If you would like us to gather them for a parcel you are considering, start with our project survey.

Keep reading

The pages that answer the next question this one raises.

Is It Legal in Indiana?

The statewide residential code, local permits and inspections, and where zoning decides the answer.

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How Long Does It Take?

Where plan review and inspections fall in the schedule.

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Where We Build

Which authority actually reviews your parcel, city by city.

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

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Sources

  1. Indiana Code Title 22 (2026) — Indiana General Assembly
  2. Indiana Code Title 14 (2026) — Indiana General Assembly
  3. Indiana Code Title 36 (2026) — Indiana General Assembly
  4. Adoption and Implementation of the 2020 Indiana Residential Code — Indiana Department of Homeland Security
  5. Fire Prevention and Building Safety Commission rules — Indiana Department of Homeland Security
  6. 675 IAC 14-4.4-2 (Indiana Residential Code, R101–R106 scope and administration) — Cornell LII
  7. Code Enforcement — Indiana Department of Homeland Security
  8. Improvement Location Permit application (rev. Oct 2023) — Shelby County Plan Commission
  9. 410 IAC 6-8.3 Residential On-Site Sewage Systems (rev. 28 Mar 2024) — Indiana Department of Health
  10. Division of Water permit programs — Indiana Department of Natural Resources
  11. Indiana Code Title 8 (2026) — Indiana General Assembly
  12. 675 IAC 14-4.4-5 (Indiana Residential Code, Table R301.2(1) county design criteria) — Cornell LII
  13. Onsite Sewage Systems Program — Indiana Department of Health

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

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