Building permits, zoning and septic rules across Kentucky

At a glance

Residential building permits

25 counties require none; 32 require them only in some cases; 63 require them²⁸⁹

Countywide zoning

52 counties have none; 46 have zoning; zoning remains unconfirmed in 22³¹⁰¹¹

No building permit and no zoning

19 counties have both answers¹²

Septic permits

Local health departments: 80 counties served by districts and 40 by county offices¹³

RV living

31 counties have an answer: 18 allowed, 2 temporary-only, 8 limited, 3 prohibited; scope and conditions matter⁶

Tiny homes

26 counties have an answer: 21 allowed and 5 limited; scope and conditions matter⁷

Owner-builder

Owner-occupied HVAC work has a licensing exemption, but initial installation requires an HVAC permit¹⁴

Private wells

No property-owner well application or fee; use a Kentucky Certified Water Well Driller¹⁵

Who to call

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Which Kentucky counties don't require a building permit?

Kentucky has 25 counties without a residential building-permit requirement, 32 with requirements limited to particular cases, and 63 requiring residential building permits.²⁸⁹ The highest-scoring counties in the no-permit group are Wayne County, Butler County, Green County, Russell County, Livingston County, Morgan County, Ohio County, Webster County.²

Use the Kentucky no-building-codes list to find counties without a residential building-permit requirement, but Kentucky's mandatory residential code still applies statewide.²¹⁶ For a single-family dwelling, building permits are required only where a local ordinance requires them.¹ Separate plumbing permits remain required before plumbing construction, installation or alteration; homeowners may obtain them for their own personal residences.¹⁷ Owner-occupied HVAC work has a licensing exemption, but an initial HVAC installation still requires an HVAC permit before work begins.¹⁴

Which Kentucky counties have no zoning?

Kentucky has 52 counties without countywide zoning and 46 with zoning; we could not confirm zoning in the remaining 22 counties.³¹⁰¹¹ The highest-scoring no-zoning counties are Wayne County, Butler County, Green County, Lee County, Russell County, Livingston County, Metcalfe County, Monroe County.³

The Kentucky no-zoning list helps narrow the search, and the no-building-permit and no-zoning list identifies the 19 counties with both answers.³¹² Kentucky allows cities and counties to adopt zoning texts and maps through local planning units, so ask the planning commission which jurisdiction and district govern the parcel.⁴ Within a planning-unit jurisdiction, subdivision approval is a separate requirement before dividing land and recording the plat.¹⁸ Agricultural land is not a blanket housing exemption: Kentucky allows regulation of dwellings and floodplain structures even under its agricultural zoning protections.¹⁹

Who issues septic permits in Kentucky?

Kentucky septic permits are administered through local health departments: 80 counties are served by multi-county districts and 40 by county offices.¹³ Lake Cumberland District Health Department is the most frequently named district in the county answers.¹³ The Kentucky Onsite Sewage Disposal Systems Program can answer statewide program questions, while the local health department evaluates the site and soil.²⁰

Obtain the septic construction permit before constructing, installing or altering any portion of the system; the application follows a site evaluation and requires drawings, specifications and permit fees.²¹ The septic permit expires 1 year after issuance unless the Cabinet grants an extension.²¹ Arrange the installation inspection before backfilling.²² A homeowner installing a personal system needs a homeowner's permit from the local health department.²³ Where public sewer is unavailable, Kentucky requires an approved private sewage disposal system for buildings subject to its plumbing code.²⁴

Can you live in an RV or tiny home on your land in Kentucky?

Kentucky RV living has county-level answers in 31 counties: 18 allow it within the stated scope, 2 allow temporary use only, 8 impose limits and 3 prohibit it.⁶ The remaining 89 counties are unanswered, rather than presumed allowed or prohibited.⁶ Start with Wayne County, Lee County, Metcalfe County, Estill County, whose allowed answers concern county land-use regulation on unincorporated land.⁶ The Kentucky RV-living list links the county-specific conditions.⁶

Kentucky tiny-home occupancy has answers in 26 counties: 21 allowed and 5 limited; 94 counties remain unanswered.⁷ Wayne County, Lee County, Metcalfe County, Estill County have allowed county land-use answers, with conditions explained on their pages and the Kentucky tiny-home list.⁷ A tiny home built as a dwelling still falls under applicable Kentucky residential-code requirements, and an onsite sewage system needs its own approval.¹⁶²¹ Kentucky's temporary-vehicle-sleeping provision concerns lawful parking on public roads, streets or parking lots; it does not establish permanent RV occupancy rights on private land.²⁵

Where are the best Kentucky counties for a bolthole?

Wayne County leads Kentucky's Bolthole Index scores at 75, followed by Butler County and Green County at 74; all have no residential building-permit requirement, no countywide zoning and district-administered septic.²⁶ Lee County and Russell County also score 74 and have no countywide zoning and district septic, but Lee has a limited building-permit requirement while Russell requires none.²⁶ Livingston County, Metcalfe County and Monroe County score 73 and have no countywide zoning; their building-permit answers are none, limited and required respectively, with district septic in Livingston and Metcalfe and county septic in Monroe.²⁶

The median county farmland value is $4,347 per acre; Leslie County has the lowest listed value at $1,450 per acre.²⁷ These are farmland-value comparisons, not asking prices for a particular parcel.²⁷ The median county effective property-tax rate is 0.7%, and the median county tax bill is $935 annually.²⁸

What are Kentucky’s water, well and access requirements?

Kentucky's water regime exempts domestic and agricultural uses from withdrawal permitting, while the general withdrawal threshold is above 10,000 gallons per day.²⁹ For constructing or abandoning a private water well, Kentucky requires no property-owner permitting application or fee; construction, modification and abandonment must be performed by a Kentucky Certified Water Well Driller.¹⁵ The driller must submit the required documentation within 60 days after completion.¹⁵ Ask the Division of Water's Well Driller Certification Program for technical assistance on well construction and maintenance.³⁰

Before planning highway access, a new or additional farm or single-family driveway approach on Department of Highways right-of-way requires a formal written application to the District Engineer.³¹ Development in an identified Kentucky floodplain needs state and local floodplain permits, including in mapped A and AE zones.³² A county's no-building-permit answer therefore does not remove floodplain or septic approvals.²³²²¹

Watch-outs

• County counts concern unincorporated land; cities may adopt their own zoning, so ask the local planning commission which rules cover the address.³⁴
• Kentucky counties can adopt building-permit requirements and zoning; confirm the current ordinance with the county building official and planning commission before buying.³³³⁴
• Floodplain development permits and septic approvals remain separate requirements where no residential building permit is required.³²²¹²
• We could not confirm a statewide tiny-home occupancy rule or numeric minimum home size, minimum lot size, setbacks, lot coverage or general building-height limit; ask the local planning commission and Kentucky Division of Building Code Enforcement about the proposed dwelling.⁴³⁵

Sources

1. Kentucky: 815 KAR 7:125, Kentucky Residential Code, quoted and re-checked
2. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties that do not require a residential building permit in unincorporated areas
3. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties with no county-wide zoning
4. Kentucky: KRS 100.203 — Content of zoning regulations, quoted and re-checked
5. Kentucky: Onsite Sewage Disposal Systems Program, quoted and re-checked
6. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties' answers on living in an RV on your own land
7. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties' answers on living in a tiny home on your own land
8. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties that require a residential building permit only in some cases (for example floodplain or certain structures)
9. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties that require a residential building permit in unincorporated areas
10. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties with county zoning
11. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties whose building-permit or zoning answer we could not confirm
12. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Kentucky counties with neither a residential building permit nor county-wide zoning
13. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Who issues septic permits across Kentucky's counties: a state agency, a multi-county health district, or the county
14. Kentucky: KRS 198B.674 — Exemptions, quoted and re-checked
15. Kentucky: Water Well Information for Home Owners, quoted and re-checked
16. Kentucky: KRS 198B.050 Uniform State Building Code, quoted and re-checked
17. Kentucky: Division of Plumbing Fee Change and Permit Information, quoted and re-checked
18. Kentucky: KRS 100.277 — Commission approval required for subdivisions, quoted and re-checked
19. Kentucky: KRS 100.203 Content of zoning regulations, quoted and re-checked
20. Kentucky Onsite Sewage Disposal Systems Program (chfs.ky.gov)
21. Kentucky: 902 KAR 10:110. Issuance of on-site sewage disposal system permits, quoted and re-checked
22. Kentucky: 902 KAR 10:085. System Installation Inspection, quoted and re-checked
23. Kentucky: Onsite Sewage Disposal Systems Program, quoted and re-checked
24. Kentucky: 815 KAR 20:130. House sewers and storm water piping; methods of installation, quoted and re-checked
25. Kentucky: KRS 511.110 — Unlawful camping, quoted and re-checked
26. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: The 8 highest-scoring Kentucky counties on the Bolthole Index (off-grid and homestead land score out of 100), with each one's building-permit, zoning and septic answers
27. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Median farmland value per acre across Kentucky's counties (USDA census, the middle county's value; USD/acre), with the five least expensive counties
28. Bolthole Index county rulebook, 120 Kentucky counties, as of October 10, 2026: Median of Kentucky's county effective property tax rates and median county property tax bills
29. Kentucky water rights and groundwater management: National Agricultural Law Center and Bolthole Index groundwater review
30. Kentucky Division of Water — Well Driller Certification Program (eec.ky.gov)
31. Kentucky: 603 KAR 1:020 Driveway approaches, entrances; construction and maintenance, quoted and re-checked
32. Kentucky: Find Your Flood Zone, quoted and re-checked
33. Kentucky: KRS 67.380 — Authority of fiscal court to regulate construction of buildings, quoted and re-checked
34. Kentucky: KRS 100.201 — Interim and permanent land use regulations authorized, quoted and re-checked
35. Kentucky Division of Building Code Enforcement (dhbc.ky.gov)

Written October 10, 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.