Building permits, zoning and septic rules in Hopkins County, Kentucky

Unincorporated Hopkins County requires a building permit before construction, alteration or repair other than ordinary repairs¹. Ordinary repairs are nonstructural and exclude specified plumbing, electrical, mechanical and similar work¹. Starting required work without a building permit adds a fee equal to the original fees¹. The published new-home review fee is $125 plus $0.08 per square foot; additions are $50 plus $0.08 per square foot, and an unfinished basement is $25². Commercial plan review has a $300 minimum total, including the $50 administrative fee⁸. Kentucky adopted the 2018 Kentucky Building Code and Residential Code, subject to jurisdiction and exceptions⁹. The farm exception is limited to qualifying agricultural land outside a municipality where the resident owner builds a structure incidental to farm operations; file the affidavit and confirm eligibility with the Planning Commission^5,10. For nonexempt building work, Hopkins County lists footer, rough-frame and final building inspections and requires 24-hour notice¹. A certificate of occupancy is issued when applicable after the final inspection and approval of required trade inspections¹.

The Hopkins County Joint Planning Commission handles building-permit submissions for unincorporated Hopkins County². Call 270-825-4457, email hcjpc@hopkinscounty.net or visit 67 North Main Street, Madisonville, KY 42431¹⁰. Inside Madisonville, Dawson Springs and Hanson, municipal officials issue building permits under city requirements^11,12,13. Septic site evaluations and installation permits for Hopkins County addresses remain with the Hopkins County Health Department where sewer is unavailable¹. County submissions require the worksheet, plans and a check payable to the commission, with the project name and location on the plans and check². Depending on the project, bring the deed or recorded plat, site plan, environmentalist approval, notarized affidavit and workers’ compensation form; complete submissions generally take five to seven business days, and appointments are recommended¹.

We could not confirm zoning for unincorporated Hopkins County; municipal zoning applies inside the respective city limits³. Madisonville, Dawson Springs, Earlington and Hanson set their own zoning^14,15,16,17. Septic administration remains with the Hopkins County Health Department for Hopkins County sites¹. The Joint Planning Commission also publishes the Mortons Gap zoning ordinance³. Madisonville detached single-family dwellings must exceed 18 feet in both length and width and have at least 600 square feet of living space excluding porches and garages¹⁸. Dawson Springs requires at least 600 square feet per single-family or two-family dwelling unit, excluding porches and garages¹⁹. County subdivision lots without sewer need at least one acre and 100 feet of width at the building line; lots severed from larger tracts also need at least 25 feet of road frontage continuing to that line⁶. County subdivision rules require a 30-foot front building line, including both street fronts on corner lots, unless stricter law controls⁶.

The Hopkins County Health Department administers onsite sewage site evaluations, septic permits and inspections under Kentucky's statewide program¹. Where public sewer is unavailable, obtain a Certificate of Registration of Construction Activity from the Planning Commission before the Health Department's site evaluation; the site-evaluation and septic installation permits must precede the building permit¹. The Environmental Health division evaluates soil suitability, and a certified installer submits a drawing with grade shots²⁰. Kentucky requires a local health department permit before constructing, installing or altering a regulated onsite system; the state fee is $50 plus the local board of health fee²¹. A qualifying homeowner may obtain a homeowner permit, generally limited to one in a five-year period except necessary repair or alteration of the originally permitted system²¹. Every onsite system installed, constructed, altered or repaired must be inspected by a certified inspector²². Only 1.4% of Hopkins County soils are rated without severe limitations for a conventional drain field, so make the site evaluation a purchase contingency²³. Inside Nortonville, the city Superintendent also signs a private-sewage permit, and systems must meet county health standards²⁴.

We could not confirm long-term RV, private-land camping or tiny-home occupancy rules for unincorporated Hopkins County; ask the Joint Planning Commission which jurisdiction and approvals cover the parcel¹⁰. Madisonville prohibits using a camper, travel trailer or motor vehicle as a permanent or temporary residence except under its limited temporary-use rules; construction-site occupancy requires a renewable temporary certificate and may last no more than six months¹⁸. A tiny home used as a dwelling should not be assumed exempt from Hopkins County's building-permit process¹. Where sewer is unavailable, the building must connect to an approved private sewage-disposal system²⁵.

1. Ask the Joint Planning Commission to confirm the parcel's jurisdiction, zoning, subdivision standards, floodplain status and application materials^6,10.
2. Where public sewer is unavailable, obtain the Planning Commission registration certificate, then the Health Department site evaluation and septic installation permit¹.
3. Confirm driveway approval with Kentucky Department of Transportation District 2 for state roads, the County Road Department for county roads or City Hall for city streets¹.
4. In a special flood hazard area, obtain the state stream-construction permit and local floodplain-development permit before work¹.
5. Submit the worksheet, required plans and payment, then allow five to seven business days after the application is complete^1,2.
6. Give 24-hour notice for footer, rough-frame and final building inspections¹.
7. Complete septic and trade inspections before occupancy; Hopkins County issues a certificate of occupancy when applicable after compliance is certified^1,26.

Check whether the tract is a recorded subdivision or proposed division because land may not be subdivided before Planning Commission approval^6,27. Confirm frontage and access because covered lots need at least 25 feet of road frontage continuing to the building line, while driveway approval comes from the state, county or city authority responsible for the road^1,6. Check mapped flood hazards because work in a special flood hazard area requires state and local floodplain permits¹. Subdivision lots require an approved water supply⁶. Kentucky does not require the property owner to submit a well-permit application or fee, but well construction and abandonment must be performed by a Kentucky-certified driller⁷. The effective property-tax rate is about 0.8%, and the median annual bill is about $1,057²³.