Brown County, Ohio requires a building permit for new one-, two- and three-family homes, additions, attached garages, and detached garages over 200 square feet1. A local zoning permit comes before the residential building application2. Septic and private-well permits go through the Brown County Health Department34.
At a glance
- Building permit
- Required for covered residential work; Brown County issues the permit after plan approval15
- Local zoning approval
- Required before applying for the residential building permit2
- Septic permit
- Required through the Brown County Health Department36
- Private well or cistern
- Installation or repair requires a Health Department permit4
- RV living
- Private-land occupancy rules could not be confirmed; ask the local zoning authority2
- Tiny home
- No countywide occupancy or minimum-size rule was confirmed; verify local zoning and building review21
- Owner-builder exemption
- Not confirmed by an official Brown County source7
Who to call
Building permits
Brown County Building Department
Residential building permits, plan review and inspections in Brown County
800 Mt. Orab Pike, Suite 111, Georgetown, Ohio 45121
Planning & zoning
Brown County Planning Commission
Planning for unincorporated Brown County and subdivision review
325 W. State St., Bldg. B, Georgetown, Ohio 45121
Septic permits
Brown County Health Department, Environmental Health
Household sewage treatment, private water systems and plumbing in Brown County
9116 Hamer Road, Suite 101, Georgetown, OH 45121
Contact details are copied from each office’s official page and were checked against it on September 28, 2026.
Do you need a building permit 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 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 project5. Ohio's statewide process also says an owner must submit construction documents to the building department with jurisdiction and receive approval before covered work begins8. 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 seal910.
Who issues Brown County building permits, and how do you reach them?
The Brown County Building Department issues residential building permits and conducts the associated plan review and inspections9. The office is at 800 Mt. Orab Pike, Suite 111, Georgetown, Ohio 45121, and its phone number is (937) 378-47169. 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.m.9. The county page says to submit two sets of plans and the fee; the building permit follows plan approval9. 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 stages11. The final building inspection requires final electric, plumbing, and septic approvals11.
Does Brown County, Ohio have zoning?
A local zoning permit is required before a Brown County residential building-permit application, so do not treat an unincorporated parcel as unzoned2. The available county material does not identify a complete countywide zoning resolution, zoning map, or township-by-township district schedule. Ask the Building Department which zoning authority serves the parcel, then obtain that authority's written answer on allowed use, setbacks, minimum dwelling size, lot size, RV occupancy, and accessory dwellings before designing the project29. The Brown County Planning Commission maintains planning for unincorporated areas, advises the county commissioners on land use and development, and reviews surveys and plats for subdivision compliance12. Ohio law allows county commissioners to adopt zoning for unincorporated territory, but that statewide authority alone does not prove which Brown County districts or local rules apply to a particular tract13.
How do septic and well permits work in Brown County?
The Brown County Health Department issues permits to install, repair, or abandon household sewage treatment systems, and most county properties do not have sanitary sewer service14. Ohio requires a site review before a new, replacement, or altered sewage-system permit; the review generally includes a soil evaluation and system design6. Brown County's process begins with a Health Department application and property evaluation, after which the owner contacts a registered installer and the installer applies for the installation permit14. Only 0.7% of county soils are rated without severe limitations for a conventional septic drain field, so a buyer should make the soil report and approved system design a purchase contingency rather than assume a conventional field will work15. The Health Department also requires a permit to install or repair a private water system, including a well or cistern4.
Can you live in an RV or tiny home on your land in Brown County?
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 units16. 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 required214. 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 Department1910.
Building a home in Brown County: the steps, in order
- Identify the zoning authority for the parcel and obtain the local zoning permit required before the residential building application2.
- Ask the Brown County Planning Commission whether subdivision or plat review affects the tract12.
- Arrange the Health Department's site evaluation, soil work, septic approval, and any private-well or cistern permit144.
- Submit two sets of plans, the fee, and the applicable approvals to the Brown County Building Department; the county issues the building permit after plan approval5.
- Build to the approved documents and request county inspections 24 hours in advance11.
- Complete final electric, plumbing, and septic approvals before the final building inspection11.
A manufactured-home project takes a different route because Brown County does not issue its permit or perform its inspections, while Ohio generally requires an inspection seal before occupancy910.
What should you check before buying land in Brown County?
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 closing2. Next, 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 field15. Ask the Health Department to explain the site evaluation, soil report, system design, inspections, and private-water permit that the tract will need144. Confirm whether subdivision review applies with the Planning Commission, which reviews surveys and plats for compliance with county subdivision regulations12. For carrying costs, Brown County's effective property-tax rate is about 0.8%, and the median annual property-tax bill is about $1,4971718. Finally, verify legal road access and any driveway or flood approval because the county's building checklist identifies those as possible prerequisites5.
Watch-outs
- A local zoning permit must come before the Brown County residential building application2.
- Conventional septic conditions are difficult across nearly all of Brown County, with only 0.7% of soils rated without severe drain-field limitations15.
- Brown County no longer permits or inspects manufactured homes; Ohio generally requires the state inspection seal before occupancy910.
Sources
- Building Department (2026 county census)
- Brown County Building Department (2026 county census)
- Brown County Health Department (2026 county census)
- Environmental Health, quoted and re-checked
- Building Department, quoted and re-checked
- Rule 3701-29-09 | Site review and permits for STS installation and operation (Ohio statewide rule), quoted and re-checked
- (2026 county census)
- Section 3791.04 | Submission of plan - approvals - prohibition - fine (Ohio statewide rule), quoted and re-checked
- Brown County Building Department (browncountyohio.gov)
- Chapter 4781-7 | Manufactured home inspections (Ohio statewide rule), quoted and re-checked
- Building Department, quoted and re-checked
- Brown County Planning Commission (browncountyohio.gov)
- Section 303.02 | County commissioners may regulate building and land use in unincorporated territory (Ohio statewide rule), quoted and re-checked
- Brown County Health Department, Environmental Health (browncountyhealth.org)
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Rule 3701-26-04 | Campground requirements (Ohio statewide rule), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 28, 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.