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

Yes. Fayette County requires permits for new homes, additions, alterations and listed structural, plumbing, mechanical, electrical, manufactured-housing, boiler and elevator work within its jurisdiction; residential jurisdiction excludes the City of Washington Court House⁶. The county enforces the 2019 Residential Code of Ohio for residential construction outside the city and the 2024 Ohio Building Code for commercial construction countywide⁹. Some minor work is exempt, including a one-story detached accessory structure no larger than 200 square feet, but confirm the full exemption list before starting⁶. An agricultural barn is different: the Zoning Official decides whether it qualifies, and no building permit is required if the agricultural exemption is granted¹.

The Fayette County Building Department is at 121 E East Street, Washington Court House, OH 43160, and its phone number is 740-335-2212¹⁰. Applications may be submitted online, by mail or in person, and the county publishes separate residential and commercial forms¹¹. Published fee schedules are guidance; the Building Official calculates the actual charge, and payment is due after approval when the permit is ready for pickup⁶. The department conducts required inspections throughout construction⁹. A homeowner may perform building, electrical, HVAC or plumbing work in a home the owner occupies or intends to occupy, but remains responsible for code compliance and inspection access¹². For covered residential projects, all required inspections must be complete and a Certificate of Use & Occupancy issued before anyone occupies the premises⁸.

Yes. Fayette County's zoning resolution regulates buildings, structures, uses and land in unincorporated areas, while incorporated municipalities may administer their own rules². The county page identifies separate officials or materials across the county's township, village and city jurisdictions, so establish the parcel's jurisdiction before using any district standard³. In the Farm District, permitted and conditional uses need at least 75,000 square feet or the larger area required by Fayette County Public Health; SR-2 permitted uses need at least 10,000 square feet, while other district standards may differ². Minimum dwelling floor area and setbacks are district-specific, and front-yard setbacks are generally measured from the road centerline². Ask the responsible zoning official for the parcel's numeric standards and any rules on lot coverage or accessory dwellings.

Fayette County Public Health's Environmental Health Division handles household sewage treatment systems through site evaluation, system design, permits, soil review, installation inspection, and operation inspection; call 740-333-3590⁴. A permit to install follows a satisfactory site determination, every private septic system needs an operation permit, and each sewage system is inspected before it enters service^4,13. Ohio's process also calls for a site review with an application, fee, soil evaluation, and system design before a new or replacement installation permit is accepted, subject to limited waiver conditions¹⁴. Site feasibility deserves attention here because only about 0.1% of county soils are rated without severe limitations for a conventional drain field, so budget for evaluation and possibly a nonconventional design rather than assuming a standard field will work¹⁵. Private wells also require a health-board permit before most construction, alteration, or sealing work, and Fayette County Public Health states that it issues permits to install and alter private wells^4,5.

We could not confirm whether long-term RV living is allowed on ordinary private land in unincorporated Fayette County. Ohio's campground rule does not establish permission for residential RV occupancy on a private parcel¹⁶. Ask the zoning official for the parcel's jurisdiction about RV occupancy, temporary camping, setbacks and time limits³. We also could not confirm a special tiny-home rule. A tiny home used as a residence still needs the zoning and building approvals applicable to its parcel, including any district-specific minimum floor area and setbacks^1,2,7. A permanently sited manufactured home has defined standards, including at least 900 square feet of living area and dimensions of at least 22 feet by 22 feet at one point; manufactured-home communities in SR-2 also require public water and sewer plus Board of Zoning Appeals approval².

1. Identify the parcel's township or municipality and get the applicable zoning standards³.

1. Ask Fayette County Public Health to evaluate the septic and well path before fixing the house location^4,5.

1. Secure driveway approval: Fayette County Engineering handles county-road right-of-way approval, while ODOT handles curb cuts on state routes⁸.

1. Obtain Flood Plain Administrator authorization before development in the county's Flood Plain Overlay District².

1. Submit the zoning and building applications online, by mail or in person, then pay the calculated fee when approved plans are ready for pickup^11,17.

1. Complete required construction inspections, then obtain the Certificate of Use & Occupancy before moving in^8,9.

Start by confirming the zoning jurisdiction and district, because lot size, dwelling floor area, setbacks, use and access standards vary by location^2,3. Test septic feasibility early because only about 0.1% of Fayette County soils are rated without severe limitations for a conventional drain field¹⁵. Check flood status before assuming development can proceed, and verify whether county or state authorities control the proposed driveway^2,8. Ask the utility provider and Building Department about any disconnected service: utility companies require an inspection before reconnection, and the county requires a permit for that inspection¹. If the tract was split, confirm health-department review of the proposed sewage arrangement⁴. For carrying costs, the median property-tax bill is about $1,561 per year and the effective rate is about 1%¹⁵.