Hopkins County, Kentucky requires a permit before construction, alteration or repair other than ordinary repairs1. The Hopkins County Joint Planning Commission handles the building-permit process, while the Hopkins County Health Department handles septic approvals where sewer is unavailable23. Unincorporated-county zoning could not be confirmed, so ask the commission about the parcel before relying on an RV, tiny-home or setback plan4.
At a glance
- Building permit
- Required before construction, alteration or repair other than ordinary repairs1
- Zoning
- Confirmed zoning ordinances cover only the member cities of Madisonville, Earlington, Hanson, Dawson Springs, and Mortons Gap; unincorporated county zoning is not confirmed45
- Septic permits
- Health Department site evaluation and installation permit required before a building permit where sewer is unavailable3
- Owner-builder exemption
- Not established on the county's official pages; ask the Joint Planning Commission directly6
- Residential permit fee
- $125 plus $0.08 per square foot for new residential construction7
- Agricultural structures
- Permit and inspection exempt when a completed affidavit is filed8
- Unsewered subdivision lots
- At least one acre, 100 feet wide at the building line and 25 feet of road frontage9
- Private wells
- Kentucky requires certified drillers; a separate owner-applied county well permit was not confirmed10
Who to call
Building permits
Hopkins County Joint Planning Commission
Building permits, subdivision plats, addressing, and floodplain administration for Hopkins County and its five member cities
67 North Main Street, Madisonville, KY 42431
Zoning
Hopkins County Joint Planning Commission (zoning page)
Publishes zoning ordinances for the commission's member cities
Septic permits
Hopkins County Health Department, Environmental Health
Septic system site evaluations, construction permits (including homeowner permits), and final inspections for Hopkins County
412 North Kentucky Avenue, Madisonville, Kentucky 42431
Septic permits
Hopkins County Health Department (Sewage & Septic Permits page)
Same Environmental Health division; this entry cites the septic-process description on its own program page
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 Hopkins County, Kentucky?
Yes. Hopkins County requires a permit before construction, alteration or repair other than ordinary repairs1. Ordinary repairs are limited to nonstructural work and do not include specified plumbing, electrical, mechanical or similar work11. Starting required work without a 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 $258. Agricultural structures are exempt from permit and inspection requirements only when a completed affidavit is filed under the Kentucky codes8. After issuance, the listed building inspections include footer, rough-frame and final inspections, with 24-hour notice required for scheduling12. A certificate of occupancy is issued when applicable after the final inspection and certification that the building complies13.
Who is the Hopkins County building department, and how do you reach them?
The Hopkins County Joint Planning Commission is the building-permit office2. Its office is at 67 North Main Street, Madisonville, KY 42431; call 270-825-4457 or email [email protected]2. Office hours are Monday through Friday, 8:00 a.m. to 4:00 p.m.2. A complete application may require the deed or recorded plat, plans and a plot or site plan when applicable, environmentalist approval when applicable, the application, a notarized affidavit and a workers' compensation form14. The commission asks applicants to allow five to seven business days for processing after the submission is complete14. The same office also handles local floodplain permits and subdivision plats1516. Ask the commission which separate electrical, plumbing, gas or other approvals and inspections apply to the particular project12.
Does Hopkins County have zoning?
Local zoning varies across Hopkins County17. The Joint Planning Commission publishes separate ordinances for Dawson Springs, Earlington, Hanson, Madisonville and Mortons Gap, but that does not establish zoning for unincorporated Hopkins County18. The commission should therefore confirm the jurisdiction and zoning status of a specific parcel before a buyer relies on a use, setback or dimensional plan2. Separate county subdivision standards can matter even where zoning is unconfirmed: an unsewered subdivision lot must have at least one acre, 100 feet of width at the building line and 25 feet of road frontage continuing to the building line9. Hopkins County subdivision lots also have a 30-foot front building line, subject to more restrictive applicable law19. Those rules concern covered subdivisions and lots severed from larger tracts; they do not prove a countywide minimum dwelling size, building-height limit or lot-coverage limit, none of which could be confirmed.
How do septic permits work in Hopkins County?
Where public sewer is unavailable, Hopkins County requires a Health Department site evaluation permit and septic installation permit before the building permit can be issued3. The Environmental Health division evaluates soil suitability and recommends a system; a certified installer must submit a drawing with grade shots before an installation permit may issue20. A homeowner who wants to install the system personally must obtain a homeowner's permit from the local health department20. The completed system receives a final inspection, and Kentucky requires every installed, altered or repaired onsite system to be inspected by a certified inspector2021. A Kentucky septic construction permit expires one year after issuance unless the Cabinet grants an extension22. Only 1.4% of county soils are rated without severe limits for a conventional drain field, so make the site evaluation a purchase contingency and budget for the possibility of a more involved system23.
Can you live in an RV or tiny home on your land in Hopkins County?
We could not confirm a Hopkins County rule allowing long-term RV occupancy, temporary private-land camping or tiny-home occupancy. Kentucky's vehicle-sleeping provision is much narrower: it addresses less than 12 hours in a vehicle parked lawfully on a public road, street or parking lot and does not authorize living in an RV on private land24. Unincorporated-county zoning also remains unconfirmed, while municipal zoning varies among the cities417. Before moving an RV or tiny home onto a parcel, ask the Joint Planning Commission whether the parcel is subject to zoning, building-code, utility, sanitation or occupancy requirements2. A tiny home used as a dwelling should not be assumed exempt from the county building-permit process, which requires permits for covered construction, alteration and repair1. Where sewer is unavailable, the building must connect to an approved private sewage-disposal system25.
Building a home in Hopkins County: the steps, in order
- Ask the Joint Planning Commission to confirm the parcel's jurisdiction, zoning status, subdivision standards, floodplain status and required application materials214.
- Where sewer is unavailable, obtain the Health Department site evaluation and septic installation permit before the building permit3.
- Obtain the proper driveway approval: state-road access goes to Kentucky Transportation Cabinet District 2, county-road access to the County Road Department and city-street access to the city26.
- If the site is in a special flood hazard area, obtain the state stream-construction permit and the commission's local floodplain-development permit before any work15.
- Submit the complete building-permit package and allow five to seven business days for processing14.
- Give 24-hour notice for listed building inspections, including footer, rough-frame and final inspections12.
- Complete the septic final inspection and all separate trade inspections before occupancy; a certificate of occupancy is issued when applicable after compliance is certified2013.
What to check before you buy land in Hopkins County
Make septic feasibility the first land contingency because only 1.4% of Hopkins County soils are rated without severe limitations for a conventional drain field23. Check whether the tract is a recorded subdivision or a proposed division: a plat needs Planning Commission approval before recording or sale, although a division for agricultural use without a new street is excluded from the subdivision definition16. Confirm road frontage and access before closing because covered lots need at least 25 feet of road frontage continuing to the building line, and driveway permits depend on whether the road is state, county or city maintained926. Check mapped flood hazards because development in a special flood hazard area needs both state and local permits before work15. For water, subdivision lots require an approved supply, while Kentucky requires a certified driller to construct, alter, repair or abandon a private well2710. The effective property-tax rate is about 0.8%, and the median annual bill is about $1,0572829.
Watch-outs
- No official source confirms a zoning ordinance for unincorporated Hopkins County; only the five member cities (Madisonville, Earlington, Hanson, Dawson Springs, Mortons Gap) have confirmed zoning ordinances, so ask the Joint Planning Commission directly about your specific parcel45.
- No source establishes an owner-builder exemption from Hopkins County's building-permit requirement; confirm directly with the Joint Planning Commission before assuming one applies6.
- Starting covered construction without the required permit adds a fee equal to the original fees1.
- Only 1.4% of Hopkins County soils are rated without severe limitations for a conventional septic drain field; secure the site evaluation before committing to a house location23.
Sources
- Hopkins County Building Permit Package, quoted and re-checked
- Hopkins County Joint Planning Commission (hopkinscountyplanning.org)
- Hopkins County Building Permit Package, quoted and re-checked
- (2026 county census)
- Hopkins County Joint Planning Commission (zoning page) (hopkinscountyplanning.org)
- (2026 county census)
- Residential Building Permit Fee Schedule, quoted and re-checked
- PLAN REVIEW FEE WORKSHEET — Residential Building Permit Fee Schedule, quoted and re-checked
- Hopkins County Subdivision Regulations, quoted and re-checked
- 401 KAR 6:320. Certification of water well drillers and water well driller assistants (Kentucky statewide rule), quoted and re-checked
- Hopkins County Building Permit Package (2026 county census)
- Hopkins County Building Permit Package, quoted and re-checked
- Hopkins County Building Permit Package, quoted and re-checked
- Hopkins County Building Permit Package, quoted and re-checked
- Hopkins County Building Permit Package, quoted and re-checked
- Hopkins County Subdivision Regulations, quoted and re-checked
- Zoning Regulations, quoted and re-checked
- Zoning Regulations, quoted and re-checked
- Hopkins County Subdivision Regulations, quoted and re-checked
- Hopkins County Health Department (Sewage & Septic Permits page) (hopkinscohealthdept.com)
- 902 KAR 10:085. System Installation Inspection (Kentucky statewide rule), quoted and re-checked
- 902 KAR 10:110. Issuance of on-site sewage disposal system permits (Kentucky statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- KRS 511.110 — Unlawful camping (Kentucky statewide rule), quoted and re-checked
- 815 KAR 20:130. House sewers and storm water piping; methods of installation (Kentucky statewide rule), quoted and re-checked
- Hopkins County Building Permit Package, quoted and re-checked
- Hopkins County Subdivision Regulations, 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.