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

Yes. Brown County requires a residential building permit for one-, two- and three-family dwellings, additions, attached garages, detached garages exceeding 200 square feet, structural remodeling, and residential demolition¹. The Building Department administers the current Residential Code of Ohio for this covered work¹. The Building Department issues the county building permit, while zoning permits and septic permits come from other offices. The permit is issued after plan approval, and the application package includes two plan sets, the fee, and the listed health, planning, zoning, driveway, flood, and septic or plumbing approvals that apply to the project¹. Published fees for new residential construction, additions, garages, and accessory buildings run from $250 to $650 by project size, with the $100 plan-review and processing fee included⁷. Brown County says its department no longer permits or inspects manufactured homes; an Ohio-regulated manufactured home generally cannot be occupied until an inspector issues the state inspection seal^1,8.

The Brown County Building Department issues residential building permits and conducts the associated plan review and inspections¹. The office is at 800 Mt. Orab Pike, Suite 111, Georgetown, Ohio 45121, and its phone number is (937) 378-4716¹. Published weekday hours are 7:30 a.m. to 4:00 p.m., with a closure from 12:30 p.m. to 1:00 p.m¹.. The county page says to submit two sets of plans and the fee; the building permit follows plan approval¹. For new homes and additions, request inspections 24 hours ahead, and expect foundation, slab or under-floor, framing and mechanical, any applicable fireplace, and final stages¹. The final building inspection requires final electric, plumbing, and septic approvals¹.

A local zoning permit is required before a Brown County residential building-permit application, so do not assume an unincorporated parcel has no zoning rules¹. Zoning is township-by-township: Perry Township has zoning regulations, requires a zoning permit for all permanent structures and for portable buildings or sheds over 200 square feet, and lists a zoning permit fee of $0.20 per square foot². Eagle Township also has a township zoning inspector³. Other townships' current districts could not be confirmed; ask the Building Department which zoning authority serves the parcel and get written answers on allowed use, minimum dwelling size, RV occupancy, and accessory dwellings¹. In an unincorporated residential subdivision where no county or township zoning resolution applies, minimum lot area depends on public-water and central-sewer availability and ranges from 9,450 square feet to 1 acre⁹. Front setbacks also vary by street type and utility service⁹. Limited zoning controls can apply to certain agricultural uses or structures on tracts of five acres or less¹⁰.

A Brown County Health Department permit is required to install, repair, or abandon a household wastewater treatment system⁴. The property owner obtains the application, the Health Department evaluates the property, and a registered installer applies for the installation permit⁴. Ohio requires a site review before a new, replacement, or altered sewage-system permit; the review generally includes a soil evaluation and system design⁵. Only 0.7% of county soils are rated without severe limitations for a conventional septic drain field, so make the soil report and approved system design a purchase contingency rather than assume a conventional field will work¹¹. The completed installation must be inspected and approved before it is covered, and all applicable inspections must be approved before the home is occupied⁴. The Health Department also requires a permit to install or repair a private water system, including a well or cistern⁴.

Brown County's private-land RV occupancy rule could not be confirmed, and the statewide campground rule does not answer whether you may live in an RV on your own parcel. Ohio's rule governs licensed and temporary campgrounds, where a compliant site generally has at least 1,000 square feet and may contain one recreational vehicle plus two portable camping units¹². For private land, ask the zoning authority serving the parcel whether residential RV use or temporary construction occupancy is allowed, then ask the Health Department what sanitation approval is required^1,4. Brown County also has no confirmed countywide tiny-home occupancy or minimum-dwelling-size rule in the available material. A site-built tiny home that falls within the county's residential building scope still needs building review, while a manufactured home follows Ohio's inspection-seal process and is not permitted or inspected by the county Building Department^1,8.

1. Identify the zoning authority for the parcel and obtain the local zoning permit required before the residential building application¹.

1. Obtain Brown County Planning Commission subdivision approval when the project involves a subdivision⁷.

1. Arrange the Health Department's property evaluation, soil work, septic process, and any private-well or cistern permit⁴.

1. Obtain Brown County Engineer approval for the driveway curb cut and address, and obtain the applicable jurisdiction's flood permit if the site is in a flood-zone area⁷.

1. Submit the plans, fee, and applicable approvals to the Brown County Building Department; the county issues the building permit after plan approval¹.

1. Request building inspections 24 hours ahead, and have the septic installation approved before it is covered^1,4.

1. Complete final electric, plumbing, and septic approvals before the final building inspection and occupancy^1,4.

Start with legal use: identify the parcel's local zoning authority and get written answers on the proposed home, temporary RV stay, setbacks, lot size, and accessory structures before closing¹. If the tract is in an unincorporated residential subdivision without an effective county or township zoning resolution, confirm the subdivision table's utility-dependent lot area and front setback with the Planning Commission⁹. Make septic feasibility a central due-diligence item because only 0.7% of Brown County soils are rated without severe limitations for a conventional drain field¹¹. Ask the Health Department to explain the site evaluation, soil report, system design, inspection sequence, and private-water permit the tract will need⁴. Verify driveway approval and identify the jurisdiction that issues the required permit if the property is in a flood-zone area⁷. Brown County's effective property-tax rate is about 0.8%, and its median annual property-tax bill is about $1,497¹¹.