Building permits, zoning and septic rules in Madisonville, Kentucky

At a glance

Building permits

Required for new, moved, enlarged or structurally altered buildings¹

Zoning

City districts govern land use and dimensions²

Septic

Health department site evaluation, installation permit and final inspection⁴

Camper during construction

Renewable temporary occupancy certificate, no more than 6 months per certificate⁵

Minimum lot size

Agricultural: 5 acres; Rural Residential: 1 acre; Low-Density Residential: 12,000 square feet⁶⁷⁸

Occupancy

Certificate of occupancy before habitation⁹

Who to call

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Do you need a building permit in Madisonville, KY?

Madisonville requires a building permit before a building or other structure is erected, moved, added to or structurally altered.¹ Madisonville has adopted the Kentucky Building Code and Kentucky Residential Code for building construction, including dwellings and accessory structures.¹⁰ Applications must include building/development plans, and approval depends on compliance with zoning and other applicable ordinances and codes.¹¹ A Madisonville building permit becomes void after 6 months unless substantial progress has been made, so coordinate the application with the construction schedule.¹

Who is the Madisonville building department contact?

For a project inside Madisonville city limits, contact the City of Madisonville Zoning & Permit Office at 270-824-2196; the office is at 67 North Main Street Madisonville, KY 42431.³ The city identifies a Building Official responsible for commercial and residential building and mechanical inspection within its expanded jurisdiction.³ Madisonville’s development team asks applicants with a preliminary plan to discuss required planning documents and building permits before construction starts.¹² Septic installation approval is a separate health-department process, rather than a city building inspection.⁴

Does Madisonville have zoning, lot sizes and setbacks?

Madisonville has city zoning districts, including Agricultural, Rural Residential and Low-Density Residential; use the parcel’s district rather than a citywide lot-size assumption.² Madisonville’s Agricultural district requires a minimum lot size of 5 acres, Rural Residential requires 1 acre, and Low-Density Residential requires 12,000 square feet.⁶⁷⁸ Agricultural setbacks are 75 feet front and 25 feet at each side and rear; Low-Density Residential setbacks are 25 feet front and rear and 8 feet at each side.¹³¹⁴ Ask the city development team to review the parcel and proposed layout before preparing construction documents.¹²

How do septic permits work inside Madisonville?

For a Madisonville property using subsurface sewage disposal, the Hopkins County Health Department requires a site evaluation before the facility is constructed and inspects the sewage disposal system.⁴ Once the property is suitable, an installation permit may be issued to a certified septic installer; a homeowner installing their own system needs a homeowner’s permit through the local health department.⁴ The health department conducts a final inspection after installation.⁴ Hopkins County’s soil ratings show only 1.4% rated not limited for conventional drain fields; that countywide figure supports getting a site evaluation, not assuming a Madisonville lot cannot support septic.¹⁵

Can you live in an RV or tiny home in Madisonville?

Madisonville allows a manufactured/mobile home, travel trailer or camper as temporary living quarters at a construction or excavation site with a renewable temporary certificate of occupancy issued for no more than 6 months.⁵ That construction-site provision does not establish permission for permanent RV living on an otherwise vacant lot.⁵ We could not confirm a distinct tiny-home occupancy rule; ask the city Zoning & Permit Office about the proposed structure and use.³ The 320-square-foot minimum in Madisonville’s Manufactured Housing Park guidelines applies in that park context, so it should not be treated as a citywide tiny-home minimum.¹⁶

Building a home in Madisonville: what are the steps?

1. Discuss the address, intended use and preliminary layout with Madisonville’s development team to identify required planning documents and building permits.¹²
2. For onsite sewage disposal, arrange the health department’s site evaluation before construction and obtain the appropriate installation permit.⁴
3. Submit the building/development plans to the Administrative Official and provide the required compliance information, including workers’ compensation and unemployment-insurance affidavits for covered contractors.¹¹
4. Arrange city inspections to verify that construction follows the approved plans.¹²
5. Obtain the certificate of occupancy authorizing habitation after code compliance and required infrastructure are complete.⁹

What should you check before buying land in Madisonville?

Ask Madisonville’s development team about floodplain and driveway encroachment approval for the proposed site; the city lists both among its development approvals.¹² We could not confirm the city’s mandatory public-water or sewer connection threshold, so ask the Zoning & Permit Office before choosing a well or septic system.³ Kentucky does not require a property-owner permit application or fee to construct or abandon a private well, but a Kentucky Certified Water Well Driller must perform the work.¹⁷ For land outside Madisonville, consult the Hopkins County guide: the reviewed farm-building exemption requires land outside a municipality and should not be assumed to cover a city parcel.¹⁸

Watch-outs

• A Madisonville construction-site camper needs a temporary certificate of occupancy; parking a camper is not the same as approval to inhabit it.⁵
• We could not confirm an owner-builder exemption inside Madisonville; ask the city Zoning & Permit Office before planning construction without a building permit.³
• A Madisonville certificate of occupancy depends on completed required infrastructure as well as building-code compliance.⁹

Sources

1. § 156.074 Building Permit (Madisonville), quoted and re-checked
2. Chapter 156: Zoning Code (Madisonville), quoted and re-checked
3. City of Madisonville Zoning & Permit Office (madisonvilleliving.com)
4. Hopkins County Health Department septic program (hopkinscohealthdept.com)
5. codelibrary.amlegal.com (Madisonville), quoted and re-checked
6. § 156.021 Agricultural (Madisonville), quoted and re-checked
7. § 156.023 Rural Residential (Madisonville), quoted and re-checked
8. § 156.024 Low-Density Residential (Madisonville), quoted and re-checked
9. § 156.078 Certificate of Occupancy (Madisonville), quoted and re-checked
10. § 150.02 Adoption of the Kentucky Building Code and the Kentucky Residential Code (Madisonville), quoted and re-checked
11. § 156.074 Building Permit (Madisonville), quoted and re-checked
12. City of Madisonville Community Development & Construction Standards (madisonvilleliving.com)
13. § 156.021 Agricultural (Madisonville), quoted and re-checked
14. § 156.024 Low-Density Residential (Madisonville), quoted and re-checked
15. 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
16. codelibrary.amlegal.com (Madisonville), quoted and re-checked
17. Water Well Information for Home Owners (Kentucky statewide rule), quoted and re-checked
18. Building Permit Disclosure Statement — Agricultural Exemption, quoted and re-checked

Written October 12, 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.