Building permits, zoning and land rules in Jefferson County, Indiana

Yes. Jefferson County requires an Improvement/Building Permit for most improvements or construction in the county zoning jurisdiction, and demolition also requires a permit even though the county charges no demolition-permit fee¹. The county identifies exceptions that include swimming pools, fences, retaining walls, pavement, playhouses, basketball poles, mailboxes, lamp posts, and home cable or internet utilities¹. An Improvement/Building Permit is valid for 3 years, and work must begin within 12 months⁸. Fees come from the adopted schedule; improvement-location fees are calculated during review, and reinspection or additional-inspection charges are due before the final inspection or certificate of occupancy when applicable⁹. Agricultural uses are excused from Development Plan approval for a new primary structure in the Agricultural District, but that exception does not waive other building, zoning, health or safety requirements⁹. Jefferson County has not expressly confirmed an owner-builder exemption, so ask the permit office who may apply and which trades require licensing³.

Jefferson County Planning, Zoning & Building Inspection is the first stop for county-jurisdiction permits, inspections, zoning and floodplain review³. The office is at 315 Jefferson Street, Annex Building, Madison, IN 47250, and its main phone is 812-265-8925³. A permit application may need builder or contractor details, electrical, elevation, floor, door and window, HVAC and plumbing information, estimated cost and use, septic or sewer approval, and a site plan¹. Payment is by cash or check; debit and credit cards are not accepted¹. Madison and Hanover handle planning and zoning inside their respective jurisdictions, so establish jurisdiction before filing, and ask those governments who issues building permits inside their limits, which we could not confirm². Septic permits are a separate county matter: on-site systems anywhere in Jefferson County are approved by the Jefferson County Health Department¹⁰.

Yes. Jefferson County zoning covers the Plan Commission area but not land under Madison or Hanover zoning jurisdiction². The county map assigns Agricultural, residential, business, industrial and overlay districts, so use the parcel's mapped district rather than countywide assumptions⁹. Setbacks and heights vary by district; for example, an R1 front yard is at least 25 feet from the right-of-way, while Agricultural District residential buildings may be up to 40 feet high⁹. In the Agricultural district, a lot without sewer needs at least 50,000 square feet (1.15 acres), more if septic requires it, and the front setback is 50 feet from the right-of-way, or 80 feet from the road center where the right-of-way is not dedicated⁸. Short-term rentals are limited to one per parcel, must be a detached, lawfully built single-family structure, and may not be an RV or accessory structure⁸. Parcel splits are also regulated: Jefferson County distinguishes exempt from major subdivisions, and major subdivisions require a sketch-plan application and Plan Commission review¹¹. Municipal water and sewer requirements likewise vary by district⁵.

A Jefferson County project involving plumbing that is not connected to municipal sewer needs a septic permit or approval letter from the Jefferson County Health Department before the building office can issue its permit³. Where public sewer is unavailable, the owner must obtain a written septic permit from the county Health Officer or designee¹⁰. An approved sewer connection is required when sewer is within 300 feet of the property line and its estimated construction and connection cost is no more than 150% of the estimated onsite-system cost¹⁰. Only about 7.3% of mapped Jefferson County soils avoid a “very limited” rating for a conventional septic drain field, so test feasibility before fixing the house site or closing¹². For a qualifying commercial system, Indiana may delegate local plan review, permitting and inspection when design flow is no more than 750 gallons per day¹³. The written septic permit is signed by the County Health Officer or designee, carries a $100 permit and inspection fee, and expires after one year if work has not occurred¹⁰. The Health Department must be notified before construction begins, before components are covered and when the work is ready for final inspection, which generally happens within 2 working days¹⁰. Ask the Health Department for the application form and its current site-evaluation steps¹⁴.

Jefferson County does not permit residential RV occupancy outside an approved campground or RV park in the county zoning jurisdiction⁴. Recreational RV use outside one is limited to 14 consecutive days, no more than six occupied RVs per parcel, no permanent utility service or attached structures, and vehicles ready for highway use⁴. A tiny home does not have blanket approval: the county's general tiny-home occupancy classification was not confirmed, so present its structure, foundation, utilities and intended use to Planning, Zoning & Building Inspection before purchase². A manufactured home may be permanently occupied in any district that permits a single-family dwelling if it meets HUD Code, foundation, skirting and permit requirements⁸. A qualifying accessory dwelling must be between 220 and 800 square feet, cannot exceed half the primary dwelling's area, and is limited to one unit on a parcel with an existing lawful, owner-occupied single-family dwelling⁵. It also needs municipal sewer or approved septic service and must satisfy state and local building-code requirements⁵.

1. Give Planning, Zoning & Building Inspection the parcel information and establish whether Jefferson County, Madison or Hanover has jurisdiction, then verify the mapped district, use, setbacks and height limits^2,9.

1. Ask the Jefferson County Health Department for a septic permit or approval letter if the project will have plumbing but no municipal-sewer connection¹⁰.

1. Confirm legal road access with the authority controlling the road; a state-highway connection requires permission through INDOT's permit system¹⁵.

1. Assemble the site plan and applicable building, trade, cost, use, septic or sewer information, then submit the application with cash or check¹.

1. Pay the calculated permit fee and any applicable later inspection charges, then schedule required inspections before occupancy^9,16.

1. Obtain the certificate of occupancy, which requires completed inspections, any required driveway-culvert inspection and, for a dwelling, a Health Department-inspected sewage system⁸.

Start with jurisdiction and the parcel's mapped zoning district because Jefferson County, Madison and Hanover administer separate areas^2,9. If a tract will be split, ask whether it qualifies as an exempt subdivision or needs major-subdivision review before relying on a proposed homesite¹¹. Make septic suitability a purchase contingency: only about 7.3% of mapped county soils avoid severe limitations for a conventional drain field¹². Check floodplain and floodway status before covered site work because floodway work also needs Indiana DNR approval before the county can issue its permit¹⁷. Confirm road ownership and entrance requirements with the Jefferson County Highway Department for a county road or INDOT for a state highway^15,18. Ask the Health Department whether a private-well permit is required because Jefferson County's rule could not be confirmed⁷.