Building permits, zoning and land rules in Johnson County, Kentucky

Kentucky does not require a building permit, building inspection or certificate of occupancy for a single-family dwelling unless a local ordinance requires them^1,2. Johnson County's local requirement for unincorporated land could not be confirmed; ask the County Judge Executive's Office before treating a parcel as permit-free^1,3. The mandatory state residential code still applies to single-family dwellings, two-family dwellings and townhouses in Johnson County, even where a single-family building permit is not required¹. Plumbing requires a separate permit before work begins, and applicable HVAC and electrical inspection requirements remain even without a local single-family inspection program^2,14.

For an unincorporated Johnson County parcel, start with the Johnson County Judge Executive's Office to ask whether a local ordinance requires a building permit and which inspector has jurisdiction^1,3. Kentucky's single-family exception does not establish a general owner-builder exemption from local building requirements¹. A homeowner may obtain a plumbing permit for an owner-occupied home or a home built for personal residential use by applying before work, filing an affidavit and personally performing code-compliant work¹¹. Only 1 new-home homeowner plumbing permit may be issued to an individual in a 5-year period¹¹. Septic has a separate qualifying-homeowner route through the Johnson County Health Department^5,10.

We could not confirm a zoning ordinance or map governing unincorporated Johnson County; ask the County Judge Executive's Office about the parcel's setbacks, minimum lot and dwelling sizes, manufactured homes and accessory dwellings^3,7. Inside Paintsville, the city has its own zoning code; the unincorporated county answer does not describe city zoning⁴. Septic site evaluations, inspections and homeowner permits remain with the Johnson County Health Department under Kentucky's statewide program⁵. Kentucky authorizes counties to regulate structure locations, distances and density through zoning, so an unconfirmed county ordinance is not permission to ignore parcel-specific restrictions^7,15.

Kentucky sets the onsite-sewage framework, while Johnson County Health Department Environmental Services inspects residential and commercial septic installation and repair⁵. Submit form DFS-307 to the local certified inspector with the $50 state permit fee and an additional local board-of-health fee^8,10. The local fee amount could not be confirmed, so ask Environmental Services for the current total before applying^16,17. A certified inspector or professional engineer must evaluate the proposed site, and every installation, alteration or repair must be inspected before backfilling⁶. A qualifying homeowner may receive a permit to do the work personally, subject to the application, eligibility and limited excavation exceptions¹⁰. Only 0.4% of Johnson County soils are rated without severe limits for a conventional drain field, so arrange the site evaluation early¹⁸.

Kentucky's residential code expressly covers a tiny house used as a single dwelling unit on a permanent foundation; the home must follow that code except where its tiny-house section says otherwise⁹. We could not confirm Johnson County's rules for tiny-home placement, minimum dwelling size, long-term RV occupancy or temporary camping⁷. Ask the Johnson County Judge Executive's Office about the exact parcel and any municipality with jurisdiction before placing or occupying a unit³. Inside a regulated recreational vehicle community, each RV space must contain at least 1,500 square feet, and RVs must meet state separation and boundary setbacks¹⁹. Those community standards do not answer whether long-term RV residence is allowed on an ordinary private parcel¹⁹. If sewer is unavailable, a dwelling's house drain must connect to an approved private sewage-disposal system²⁰.

1. Confirm the parcel's jurisdiction and ask the Johnson County Judge Executive's Office whether a local building permit, zoning approval or county-road entrance approval applies³.

1. Check the flood map before choosing a building site; construction in a Special Flood Hazard Area requires both state and local floodplain permits¹².

1. Arrange a septic site evaluation, then submit form DFS-307, the $50 state fee and the additional local fee to the Johnson County Health Department's certified inspector^6,8,10,17.

1. Decide whether a certified septic installer or a qualifying homeowner will do the work; the homeowner route requires an application before construction and personal performance subject to narrow exceptions¹⁰.

1. Obtain a Kentucky Transportation Cabinet permit for access to a state highway-system road or work in its right-of-way; ask the county about access from county-maintained roads^3,21.

1. Build one- and two-family dwellings and townhouses to the Kentucky Residential Code even if a single-family project ultimately does not require a local building permit¹.

Check usable terrain and septic feasibility before treating the asking price as the project cost. Only 11.7% of Johnson County land is at a slope of 15% or less, and only 0.4% of soils are rated without severe limits for a conventional drain field¹⁸. The county is 91.1% wooded, so clearing, access and grading can materially shape a rural build¹⁸. Check the flood map and contact the Floodplain Coordinator before development if the site lies in a Special Flood Hazard Area¹². Confirm legal road access: access to a state highway-system road requires a Kentucky Transportation Cabinet permit, ask the County Judge Executive's Office about county-maintained roads^3,21. If dividing land for septic-served lots, budget for an individual evaluation of every proposed lot or site⁶. A property owner does not file a permit application or pay a fee to construct or abandon a private water well, but a Kentucky Certified Water Well Driller must perform the work¹³.