Unincorporated Madison County, Ohio requires a building permit for a home, with building permits processed through the Village of West Jefferson portal1. County zoning applies in applicable unincorporated areas; London and incorporated villages use their own building and zoning officials, while household septic permits and inspections remain with Madison County Public Health countywide2.
Do you need a building permit in Madison County, Ohio?
Yes.
Yes. A home in unincorporated Madison County requires a building permit, and Madison County sends applicants to the Village of West Jefferson permit process1. West Jefferson enforces current Ohio residential and commercial building-code requirements in the jurisdictions it serves, including Madison County residential permits, although the reviewed material does not identify the code edition6. Ohio requires an owner of a covered building to submit plans and supporting documents to the building department with jurisdiction and wait for approval before beginning work4. Permit fees vary by the locally adopted schedule, so request a project-specific total7. A qualifying agricultural structure may receive a conditional state-law exemption based on its use8.
Who handles Madison County building permits, and how do you reach them?
Madison County contracts with the Village of West Jefferson for its building-permit process and directs applicants to the online portal for building-permit applications and research.
Madison County contracts with the Village of West Jefferson for its building-permit process and directs applicants to the online portal for building-permit applications and research1. Call the building-permit office at 614-379-5250 or email kristie.west@madison.oh.gov with building questions1. Zoning approval is separate: unincorporated land goes to the Madison County Building and Zoning Office at 1 N. Main Street, London, Ohio 43140, phone (740) 852-28332. Property inside London or an incorporated village goes to that municipality's building and zoning officials, but Madison County Public Health still administers household septic permits and inspections countywide2. An owner-builder may undertake covered work, but ownership does not waive plan approval or code compliance4.
Does Madison County have zoning?
Yes.
Yes. Madison County has a zoning resolution for applicable unincorporated areas3. London and incorporated villages use their own building and zoning officials, while unincorporated property goes to the Madison County Building and Zoning Office2. Comprehensive-plan map colors are not proof of a parcel's current district2. County materials identify lot-ratio, frontage and size rules for A-1 and R-1 lots in applicable areas without supplying the measurements on the reviewed page9. Darby Fields Section 5 has plat-specific front, rear and side setbacks, plus limited encroachments, but the plat says the zoning code controls if requirements conflict10. Before ordering plans, ask the correct zoning office to confirm the parcel's district, permitted use, setbacks, lot dimensions, dwelling standards and zoning-certificate requirements.
How do septic permits work in Madison County?
Madison County Public Health administers household septic permits and inspections throughout Madison County.
Madison County Public Health administers household septic permits and inspections throughout Madison County2. A septic permit is required for a new home or business not connected to public sanitary sewer and for specified alterations or replacements; replacing a pump or motor and certain minor tank-access work are exceptions2. The program includes site evaluation, design, soil surveys, installation inspections and operational inspections, although the county page does not say every system receives every inspection2. None of the county's mapped soils avoid a severe USDA limitation rating for a conventional drain field, so complete a site-specific evaluation before fixing the house location11. In a Madison County Sanitary Sewer and Water District service area, water or sewer connection work must wait for district approval and full fee payment, then use an approved installer and receive a final inspection12.
Can you live in an RV or tiny home on your land in Madison County?
Madison County has not confirmed a countywide rule allowing long-term RV residence or tiny-home occupancy on private land.
Madison County has not confirmed a countywide rule allowing long-term RV residence or tiny-home occupancy on private land. For unincorporated property, ask the Madison County Building and Zoning Office how the parcel's current zoning district treats the proposed unit and use2. For land inside London or a village, ask that municipality's building and zoning officials instead2. Ohio's campground rules regulate recreational vehicles within licensed and temporary campgrounds, but those rules do not answer whether an RV may serve as a residence on a private homestead parcel13. A manufactured home regulated under Ohio law generally cannot be occupied until an inspector issues its inspection seal14. For a tiny home, confirm zoning, building-code treatment, sanitation approval and legal occupancy before buying or placing the structure.
Building a home in Madison County: the steps, in order
Identify whether the parcel is unincorporated or inside London or an incorporated village, then have the correct office confirm its zoning district and site standards.
- Identify whether the parcel is unincorporated or inside London or an incorporated village, then have the correct office confirm its zoning district and site standards2.
- If land will be divided, complete the applicable county plat or subdivision review before treating a proposed lot as buildable3.
- Ask Madison County Public Health for septic site evaluation and a septic permit when public sewer is unavailable; in a district service area, obtain district approval before water or sewer connection work2,12.
- Submit the County Subdivision Review Board pre-application for covered zoning-certificate, building-permit, lot-split, driveway or other road-access proposals, then obtain any required driveway access permit5.
- Apply for the building permit through the contracted West Jefferson portal and wait for plan approval before construction1,4.
- Arrange applicable building inspections and complete the county health department's septic inspection process1,2.
What should you check before buying land in Madison County?
Start with jurisdiction and parcel zoning because planning-map colors may not show current zoning and incorporated municipalities use their own building and zoning officials.
Start with jurisdiction and parcel zoning because planning-map colors may not show current zoning and incorporated municipalities use their own building and zoning officials2. Check soils before selecting a house site because none of Madison County's mapped soils avoid a severe USDA limitation rating for a conventional septic drain field11. Confirm whether the tract is already a lawful buildable lot or needs subdivision review5. Verify road access because a qualifying new or modified entrance onto a county or township road requires an Engineer's Office driveway access permit in covered unincorporated areas5. Development in a regulated special flood-hazard area may require a floodplain development permit, engineering analysis, elevation documentation and utility protection15. Madison County's effective property-tax rate is about 1.1%, and its median annual property-tax bill is about $2,43711.
Watch-outs
- A comprehensive-plan map is not proof of current parcel zoning; confirm the district with the Madison County Planning and Zoning Office2.
- Do not assume an RV or tiny home can be occupied on private land; Madison County has not confirmed those rules, so ask the zoning office with the parcel address2.
- None of Madison County's mapped soils avoid a severe USDA limitation rating for a conventional septic drain field, so complete the health department's site and soil review before committing to a house location2,11.
- A qualifying new or changed driveway onto a county or township road needs a driveway access permit from the Madison County Engineer's Office in covered unincorporated areas5.
Sources
15 official pages, each quoted and re-checked · written October 10, 2026
- Madison County Building & Zoning - Building Permit (2026 county census)
- Madison County Zoning Standards and Regulations
- Madison County Zoning Standards and Regulations
- Section 3791.04 | Submission of plan - approvals - prohibition - fine (2026 county census)
- Madison County Access Management Regulations
- Department of Development
- Chapter 4101:7-7 | Fees (Ohio statewide rule)
- Section 3781.06 | Public buildings to be safe and sanitary - definitions (Ohio statewide rule)
- Madison County Zoning Standards and Regulations
- Darby Fields Section 5 Final Plat
- 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
- New Construction Process
- Rule 3701-26-04 | Campground requirements (Ohio statewide rule)
- Chapter 4781-7 | Manufactured home inspections (Ohio statewide rule)
- Flood Hazard Area Development Permit Application and Administrative Checklist
Written October 10, 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.
Off-grid gear
Going off-grid in Madison County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
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