Eaton County, Michigan requires a building permit before construction in jurisdictions served by the county code department, while some communities administer their own codes12. Eaton County zoning ended June 30, 2026, but township, village and city zoning can still apply3. On-site sewage systems and wells require review and permits through the Barry-Eaton District Health Department45.
At a glance
- Building permit
- Required before construction in the applicable construction-code jurisdiction and for a change of use or occupancy1
- Building department
- Eaton County Construction Codes serves many communities; verify the enforcing agency for the parcel67
- County zoning
- No county zoning after June 30, 2026; township, village or city zoning may still apply8
- Septic permit
- Site evaluation, permit and final inspection through Barry-Eaton District Health Department91011
- County minimum home size
- No county zoning minimum, but building-code and local-government rules may apply12
- County setbacks
- No county zoning setback, but local, septic, road, floodplain and other requirements may apply13
- Owner-builder exemption
- Unconfirmed; ask the applicable building department before relying on an exemption14
- Private well
- Site evaluation, permit, final inspection and water sampling through Barry-Eaton District Health Department5
Who to call
Building permits
Eaton County Department of Construction Codes
Building-code inspections and compliance in the county department's jurisdiction
1045 Independence Boulevard, Room 150, Charlotte, MI 48813
Also useful
Eaton County Department of Construction Codes - Jurisdiction List
Published list of local governments served by county code enforcement and jurisdictions that administer their own codes
Septic permits
Barry-Eaton District Health Department - Eaton County Office
On-site sewage site evaluations, permits and final inspections in Eaton County
1033 Health Care Dr., Charlotte, MI 48813
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in Eaton County, Michigan?
Yes, within the applicable Eaton County construction-code jurisdiction. Before construction of a building or structure, the owner or the owner's representative must apply to the appropriate enforcing agency, and a permit is also required when use or occupancy changes1. Eaton County applies the 2015 Michigan Residential Code to one- and two-family homes and the 2021 Michigan Building Code to commercial and industrial buildings in the communities it serves; some communities administer their own codes2. Ordinary repairs are exempt only within state-listed limits involving structural work, egress, utilities, and public health or safety1. County materials also specify permits for repairs or replacement after fire or natural-disaster damage15.
Who is the Eaton County building department, and how do you reach it?
The Eaton County Department of Construction Codes inspects work and verifies code compliance in the communities within its jurisdiction16. Its office is at 1045 Independence Boulevard, Room 150, Charlotte, MI 48813; call 517-543-3004 or email [email protected]16. Permit applications go through BS&A Online, and the county also provides staff help, public computers and payment options17. Inspection requests go by phone and must include the caller's name and phone number, the permit number or job-site address, and the inspection type18. Jurisdiction is parcel-specific: some communities administer their own building, electrical, mechanical, plumbing and zoning codes6.
Does Eaton County have zoning?
Eaton County has no zoning under county authority after repealing its zoning ordinance effective June 30, 20268. Local zoning varies: Eaton Rapids City and Windsor, Delta and Oneida townships are among the communities identified as administering zoning in their own areas19. At the county-zoning level, unincorporated Eaton County has no minimum dwelling-size rule, minimum lot-size rule, zoning setback, lot-coverage limit or building-height limit1220132122. Local zoning, building-code limits, septic separations, road requirements, subdivision controls and floodplain restrictions may still constrain a parcel13. Ask the parcel's township, village or city for its current zoning map and ordinance.
How do septic permits work in Eaton County?
The Barry-Eaton District Health Department evaluates Eaton County sites, issues on-site sewage permits and performs final reviews where municipal wastewater service is unavailable4. A site evaluation comes first; if the parcel can support development, the applicant submits the sewage-system application and fee before a sanitarian authorizes construction23. After installation, the owner or contractor must notify the department; the system can be covered after final approval and an approved tag24. Only 0.2% of Eaton County soils are rated without severe limits for a conventional drain field, so obtain the evaluation before fixing the house location or purchase budget25. The Eaton County health office is at 1033 Health Care Dr., Charlotte, MI 48813, and its phone is 517-543-243026.
Can you live in an RV or tiny home on land in Eaton County?
We could not confirm a countywide right to live in an RV on private land in Eaton County. Because Eaton County ended county zoning but townships, villages and cities retained zoning authority, ask the parcel's local government about RV occupancy, parking, utilities and time limits8. A tiny home is not automatically exempt from approvals: Michigan guidance for tiny houses used as resort cabins requires applicable local zoning, building, electrical and plumbing permits and final approvals, along with health-department approvals for wells and septic systems27. County zoning itself sets no minimum dwelling size, but local-government rules and building-code minimums may still apply12. Sanitary sewage must go to a municipal sewer or an approved onsite septic system28.
What are the steps to build a home in Eaton County?
- Identify the township, village or city and obtain its zoning rules because Eaton County no longer administers county zoning3.
- Use the county jurisdiction list to determine whether Eaton County Construction Codes or another agency enforces codes for the parcel6.
- If municipal sewer is unavailable, arrange the health department's septic evaluation; a private well also needs a site evaluation and permit235.
- Confirm driveway access with the Eaton County Road Commission for a land division entering a county road, or with MDOT for a state highway29.
What should you check before buying land in Eaton County?
Confirm local zoning and code jurisdiction first because the county zoning repeal does not answer what a township, village or city allows3. Test septic feasibility early because only 0.2% of county soils lack severe limits for a conventional drain field, and budget separately for the required well evaluation, permit, final inspection and water sampling if the parcel needs a well255. For a land division entering a county road, ask the Eaton County Road Commission whether a driveway can be established; MDOT handles access from a state highway29. The terrain is generally gentle, with 99.6% of land at a slope of 15% or less, while 33.6% is wooded3334. We could not confirm the complete floodplain-development rule, so ask the applicable local government before placing the building.
Watch-outs
- Eaton County's zoning repeal does not cancel township, village or city zoning; verify the parcel's local rules before assuming an RV, tiny home, setback or lot size is allowed8.
- Select county construction-code fees change October 1, 2026, and the published schedule includes a late fee when required permits are not obtained after formal notice; verify the current schedule before applying35.
- The owner-builder licensing exemption is unconfirmed; ask the applicable enforcing agency before pulling a permit for work you will perform yourself14.
Sources
- Building Permit Information, quoted and re-checked
- Department of Construction Codes, quoted and re-checked
- Resolution to Repeal the Eaton County Land Development Code, quoted and re-checked
- On-Site Sewage Systems, quoted and re-checked
- On-Site Drinking Water Wells, quoted and re-checked
- Eaton County Department of Construction Codes - Jurisdiction List (eatoncounty.org)
- Building Permit Information (Michigan statewide rule), quoted and re-checked
- Resolution to Repeal the Eaton County Land Development Code, quoted and re-checked
- On-Site Sewage Systems, quoted and re-checked
- On-Site Sewage Systems, quoted and re-checked
- On-Site Sewage Systems, quoted and re-checked
- Resolution to Repeal the Eaton County Land Development Code, quoted and re-checked
- Resolution to Repeal the Eaton County Land Development Code, quoted and re-checked
- (2026 county census)
- Eaton County Department of Construction Codes Fee Schedule (Proposed 2026), quoted and re-checked
- Eaton County Department of Construction Codes (eatoncounty.org)
- Homeowner Permit Applications, quoted and re-checked
- Department of Construction Codes, quoted and re-checked
- Jurisdiction, quoted and re-checked
- Resolution to Repeal the Eaton County Land Development Code, quoted and re-checked
- Resolution to Repeal the Eaton County Land Development Code, quoted and re-checked
- Resolution to Repeal the Eaton County Land Development Code, quoted and re-checked
- On-Site Sewage Systems, quoted and re-checked
- On-Site Sewage Systems, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Barry-Eaton District Health Department - Eaton County Office (barryeatonhealth.org)
- 2022 ARVC - General (Michigan statewide rule), quoted and re-checked
- Disposal of residential wastewater such as swimming pool water (Michigan statewide rule), quoted and re-checked
- Eaton County Land Division Application, quoted and re-checked
- Department of Construction Codes, quoted and re-checked
- Construction Booklet 2018, quoted and re-checked
- Construction Booklet 2018, quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- Wooded share of land: Bolthole Index county data
- Eaton County Department of Construction Codes Fee Schedule (Proposed 2026), quoted and re-checked
Written September 29, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.