Building permits, zoning and land rules in Henry County, Ohio

At a glance

Building permit

Required within the stated jurisdiction; commercial coverage is countywide, while residential coverage is limited to Napoleon corporate limits¹

Zoning

Administered by the applicable township or municipality; the responsible inspector varies by parcel²

Septic permit

Required through the Henry County Health Department for household sewage systems³⁵

Private well permit

Required through the Henry County Health Department before installation or alteration⁴

Owner-builder

Trade-license exemption is conditional inside the stated residential jurisdiction; permits still apply⁶

RV or tiny home

Private-land occupancy was not confirmed; ask the zoning authority for the parcel²

Agricultural building

A qualifying agricultural-use structure can receive a zoning certificate tied to a building-code exemption⁷

Who to call

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Do you need a building permit in Henry County, Ohio?

The answer depends on the project and parcel. Wood County Building Inspection handles commercial construction throughout Henry County, but its residential jurisdiction in Henry County is limited to Napoleon corporate limits¹⁸. Commercial work in the department's Henry County jurisdiction receives ongoing inspection through completion and occupancy⁹. Ohio law says that when no certified municipal, township or county residential building department has jurisdiction, an owner is not required to make the state plan submission described by that law¹⁰. We could not confirm residential building-permit authority for every unincorporated parcel, so ask Wood County Building Inspection and the parcel's township zoning inspector before treating a rural home as permit-free.

Who issues building permits in Henry County, and how do you reach them?

Wood County Building Inspection processes applications, reviews plans, issues permits and inspects covered projects through completion and occupancy¹¹. The office is at One Courthouse Square in Bowling Green and can be reached at 419-354-9190 or buildinginspection@woodcountyohio.gov⁸. For residential work inside Napoleon, applicants submit the application, calculated fee and required drawings; a zoning permit and applicable utility information must be supplied before permit issuance¹²¹³. The owner-builder exception there applies only when the owner personally performs the electrical, plumbing or HVAC work on a home the owner occupies or intends to occupy; permits still apply, and starting without them can double the original fee⁶. For rural residential work outside Napoleon, begin with the parcel's zoning inspector and ask Wood County Building Inspection who has jurisdiction.

Does Henry County have zoning?

Zoning administration varies by township, city and village rather than coming from one uniform county desk². Henry County Planning serves Liberty, Flatrock and Napoleon townships and refers other parcels to their listed local inspector¹⁴. Ask that inspector for the parcel's setbacks, dwelling-size rules and allowed uses. A narrower subdivision rule sets a minimum lot width of 125 feet at the building setback line and a minimum area of 1 acre for unzoned minor-subdivision lots that lack both public or centralized sewer and public water¹⁵. Those figures are not countywide minimums. In residential subdivisions not under township zoning, the front setback line may not be less than 90 feet from the center of the traveled part of the street¹⁶. A qualifying agricultural structure may receive a zoning certificate declaring agricultural use and a related building-code exemption, although health, floodplain, environmental and other local requirements can still apply⁷.

How do septic permits work in Henry County?

The Henry County Health Department issues installation and operation permits for household sewage systems¹⁷³. A new system requires a soil evaluation, system design, site evaluation, Health Department review and installation-permit application⁵¹⁸. Operation permits run for five years, with qualifying inspection, service, maintenance or pumping evidence required during each operating period¹⁹. None of Henry County's mapped soils rate free of severe limitations for a conventional drain field in the cited USDA measure, so obtain the site evaluation before pricing a standard system²⁰. In an unincorporated subdivision where public sewer is not reasonably accessible, an on-lot system may be allowed only with Health Department approval; soil, drainage, groundwater and topography determine whether it is permissible²¹.

Can you live in an RV or tiny home on your land in Henry County?

We could not confirm a countywide Henry County rule allowing or prohibiting residential use of an RV or tiny home on private land. The practical answer depends first on the township or municipality because zoning administration varies by local jurisdiction². Ohio's statewide RV rule covers licensed and temporary campgrounds, so it does not answer whether someone may live in an RV on a private rural parcel²². A manufactured home follows a different statewide path and generally cannot be occupied until an inspector issues its inspection seal²³. Before relying on an RV during construction or choosing a tiny-home design, give the parcel number and intended occupancy to the listed zoning inspector and ask the Health Department how wastewater will be handled.

Building a home in Henry County: the steps, in order

1. Identify the township or municipality and ask its listed zoning inspector about use, setbacks and the zoning certificate².
2. Ask Wood County Building Inspection whether the parcel falls within a certified residential jurisdiction; its stated Henry County residential coverage is limited to Napoleon corporate limits⁸.
3. If the site will use septic, obtain the soil evaluation and system design, then apply to the Henry County Health Department for site review and an installation permit⁵.
4. Obtain a Henry County Health Department permit before installing or altering a private water system, including a well⁴.
5. Where Wood County Building Inspection has jurisdiction, submit the application, calculated fee, drawings, zoning permit and applicable utility information¹²¹³.
6. Do not start covered work until the building permit is issued¹.
7. Schedule required commercial inspections through Wood County Building Inspection⁹.

What should you check before buying land in Henry County?

Start with septic feasibility: none of the county's mapped soils rate free of severe limitations for a conventional drain field in the cited USDA measure²⁰. Henry County is very flat, with about 99.6% of land at a slope of 15% or less, and about 6.8% is wooded²⁴²⁵. Confirm zoning jurisdiction, flood exposure, water supply and legal road access before closing. Every subdivision lot in unincorporated Henry County must abut an accepted, improved public street unless a qualifying private drive satisfies township zoning and access-easement conditions²⁶. A driveway or curb cut in a Henry County subdivision needs a permit or approved-access letter from the Henry County Engineer or Ohio Department of Transportation, with a maximum 15% grade²⁷. Development in a Henry County special flood hazard area generally requires a development permit²⁸. Subdivision and health-department processes charge filing or permit fees, so request the current schedules before budgeting²⁹.

Watch-outs

• Wood County Building Inspection's Henry County residential jurisdiction is limited to Napoleon corporate limits, even though its commercial jurisdiction extends throughout Henry County⁸.
• Henry County zoning contacts vary by township or municipality, so a neighboring parcel across a jurisdiction line may have a different inspector and different local standards².
• None of Henry County's mapped soils rate free of severe limitations for a conventional septic drain field in the cited USDA measure, so arrange soil and site review before committing to a house location²⁰.
• Private-land RV occupancy, tiny-home occupancy and general parcel setbacks remain unconfirmed; the available lot-size and driveway rules apply only in stated subdivision contexts¹⁵²⁶.

Sources

1. Wood County Offices: Building Inspection, quoted and re-checked
2. Zoning Inspectors, quoted and re-checked
3. Household Sewage Treatment Systems, quoted and re-checked
4. Private Water Systems, quoted and re-checked
5. Household Sewage Treatment Systems, quoted and re-checked
6. Wood County: Residential Projects, quoted and re-checked
7. Section 3781.061 - Ohio Revised Code, quoted and re-checked
8. Wood County Building Inspection (wcbinspect.co.wood.oh.us)
9. Wood County Offices: Building Inspection, quoted and re-checked
10. Section 3791.04 | Submission of plan - approvals - prohibition - fine (Ohio statewide rule), quoted and re-checked
11. Wood County Offices: Building Inspection, quoted and re-checked
12. Wood County: Residential Projects, quoted and re-checked
13. Wood County: Residential Projects, quoted and re-checked
14. Henry County Planning Commission (henrycountyohio.gov)
15. Henry County Subdivision Regulations, quoted and re-checked
16. Henry County Subdivision Regulations, quoted and re-checked
17. Henry County Health Department (henrycohd.org)
18. Henry County Health Department: Sewage management, quoted and re-checked
19. Henry County Supplemental Sewage Rules, quoted and re-checked
20. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
21. Henry County Subdivision Regulations, quoted and re-checked
22. Rule 3701-26-04 | Campground requirements (Ohio statewide rule), quoted and re-checked
23. Chapter 4781-7 | Manufactured home inspections (Ohio statewide rule), quoted and re-checked
24. Share of land at 15% slope or less: Bolthole Index county data
25. Wooded share of land: Bolthole Index county data
26. Henry County Subdivision Regulations, quoted and re-checked
27. Henry County Subdivision Regulations, quoted and re-checked
28. Henry County Floodplain Regulations, quoted and re-checked
29. Henry County Subdivision Regulations, quoted and re-checked

Written October 9, 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.