Grayson County, Kentucky has a local building inspector, but we could not confirm exactly when a building permit is required in unincorporated areas12. Inside Leitchfield, the city's Planning Commission issues building permits and sets zoning, subject to stated exemptions34. Septic permits and site evaluations, in the city or outside it, go through the Grayson County Health Department5.
At a glance
- Building permit
- Required in Leitchfield; unincorporated-county requirements remain unconfirmed312
- Building code
- Kentucky's residential code applies to single-family homes, two-family homes and townhouses6
- Zoning
- Leitchfield has zoning; coverage of unincorporated Grayson County remains unconfirmed47
- Septic permits
- Required before construction, installation or alteration through the local health department89
- Owner-builder
- Owners may do qualifying work themselves, but permits and code compliance still apply1011
- RV or tiny home
- Permanent-foundation tiny houses are recognized by state code; private-land RV occupancy remains unconfirmed12137
- Septic soil difficulty
- Only 10.3% of county soils lack severe limits for a conventional drain field14
- Private well
- No owner permit application or fee, but a Kentucky-certified driller must do the work15
Who to call
Building permits
Grayson County Local Building Inspector
Local building-permit and inspection questions for Grayson County
Septic permits
Grayson County Health Department, Environmental
Local environmental contact for septic site evaluations, permits and inspections
124 East White Oak Leitchfield, KY 42754
Roads & driveways
Kentucky Transportation Cabinet District Four, Grayson County Maintenance
State-road maintenance contact; state-highway driveway applications go to the District Engineer
1026 Owensboro Rd. (KY 54) Leitchfield, KY 42754
Contact details are copied from each office’s official page and were checked against it on October 10, 2026.
Off-grid gear
Going off-grid in Grayson County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Grayson County, Kentucky?
The answer depends on the parcel. Inside Leitchfield, a building permit is required before construction, placement, demolition, excavation, moving or exterior alteration of a building, including accessory buildings, signs and fences; recurring maintenance and stated ordinance exemptions are excluded3. Leitchfield also requires a certificate of occupancy before a newly created, erected, changed, converted, enlarged or moved structure or premises is used, subject to the same kinds of exemptions16. For unincorporated Grayson County, Kentucky lists a local building inspector, but we could not confirm the local ordinance or the exact project classes that require permits117. Kentucky's default is that a single-family dwelling does not need a permit, inspection or certificate of occupancy unless local government requires it21819. The Kentucky Residential Code still governs covered homes20.
Who handles Grayson County building permits and inspections?
The Kentucky Department of Housing, Buildings and Construction lists the Grayson County Local Building Inspector and publishes the inspector's phone number17. Call that office first for an unincorporated parcel and ask which permit, inspection sequence and occupancy approval apply to the proposed structure121. Inside Leitchfield, the Planning Commission or its authorized agent issues the zoning-related building permit, may inspect buildings and premises as needed to enforce the ordinance, and issues the certificate of occupancy32216. Separate systems have separate approvals: plumbing work needs a state plumbing permit before work starts, although a homeowner may receive one for the homeowner's personal residence if the owner applies before work begins, files an affidavit and does all of the work personally2310. Septic permits stay with the county health department even inside Leitchfield; questions go to the Grayson County Health Department245. A driveway entering a state highway requires a written application to the Department of Highways District Engineer25.
Does Grayson County have zoning?
Leitchfield has zoning administered by the Leitchfield Planning Commission, but the city ordinance does not establish zoning coverage for Clarkson, Caneyville or unincorporated Grayson County4. Countywide zoning remains unconfirmed despite a planning-directory listing7. Inside Leitchfield, dimensional rules vary by district: the R-1 district has front and rear setbacks of 25 feet, side setbacks of 15 feet on both sides and maximum lot coverage of 35%2627. The Agricultural district uses 50-foot front and rear setbacks, 35-foot side setbacks and 35% maximum lot coverage2829. Agricultural-district land used solely for agriculture receives the treatment specified by Kentucky zoning law, but building-code, health and septic requirements can still apply30. Leitchfield subdivision regulations also apply when land is divided for eventual lot development31. Ask which planning authority covers the parcel before applying any city standard outside Leitchfield17.
How do septic permits work in Grayson County?
The Grayson County Health Department handles septic site evaluations and inspections for new, existing and repair systems53224. A site evaluation comes first; before construction, installation or alteration begins, the applicant needs a permit supported by a detailed drawing, specifications and the required fee8. The published schedule lists $300 for a basic site evaluation, $150 for a repair site evaluation and $300 for a new-system installation permit; alteration permits cost $175 or $265 depending on type33. The permit lasts one year unless the Cabinet grants an extension and may be issued to a certified installer or homeowner; a homeowner installing a system must obtain a homeowner's permit through the local health department834. A certified inspector must inspect an installed, altered or repaired system before backfilling35. Kentucky permits an approved private onsite system where public sewer is unavailable, but generally prohibits seepage pits, cesspools and dry wells except for narrow legacy-system exceptions3637. Only 10.3% of county soils lack severe limitations for a conventional drain field, so complete the evaluation before fixing the house site14.
Can you live in an RV or tiny home in Grayson County?
Kentucky's residential code recognizes a tiny house of 400 square feet or less, excluding lofts, when it is a single dwelling unit on a permanent foundation and complies with the code's tiny-house provisions12. That building-code path does not override local zoning, septic, floodplain or land-use rules12. We could not confirm a countywide minimum dwelling size or a Grayson County rule allowing long-term RV occupancy on private land. Countywide zoning coverage also remains unresolved7. Kentucky's rule for sleeping in a lawfully parked vehicle on a public road, street or parking lot for less than 12 hours does not authorize residential RV use on private land13. Before buying, give the local building inspector the parcel address and explain whether the unit is on wheels or a permanent foundation and whether occupancy is temporary or permanent17. Inside Leitchfield, also confirm the zoning district, permit and certificate-of-occupancy requirements4316.
How do you build a home in Grayson County, Kentucky, step by step?
- Identify whether the parcel is inside Leitchfield or in another part of Grayson County, because Leitchfield's zoning and permit rules do not establish the rules outside the city4.
- Call the Grayson County Local Building Inspector with the parcel and project type; confirm the building permit, inspection sequence and occupancy approval in writing171.
- Arrange the health department's septic site evaluation before fixing the house location; only 10.3% of county soils lack severe conventional-drain-field limits2414.
- Submit the septic drawing, specifications and fee, obtain the installation permit, and schedule inspection before backfilling835.
- Obtain the separate plumbing permit before plumbing work begins23.
- If access enters a state highway, apply in writing to the Department of Highways District Engineer2538.
- Build to the Kentucky Residential Code and follow every locally confirmed inspection and occupancy step20.
What should you check before buying land in Grayson County?
Start with wastewater feasibility: only 10.3% of Grayson County soils are rated without severe limits for a conventional septic drain field, so a satisfactory site evaluation can determine where a home can realistically sit14. For a private well, the owner does not file a construction or abandonment permit application or pay a permit fee, but a Kentucky-certified water-well driller must perform construction, modification or abandonment15. Check flood maps because development in an identified Kentucky floodplain requires both state and local permits39. Confirm legal access and use the District Engineer process for a driveway entering a state highway25. Inside Leitchfield, driveways generally must remain at least 5 feet from a property line, with an exception for single-family residential units and other ordinance provisions40. Also verify whether a proposed land division needs planning-commission plat approval before recording41.
Watch-outs
- Leitchfield's zoning ordinance does not establish the rules for unincorporated Grayson County; verify the parcel's jurisdiction before using city setbacks or permit standards4.
- A permanent-foundation tiny house has a state code path, but countywide minimum-size rules and long-term private-land RV occupancy remain unconfirmed127.
- A septic permit must precede system work, and inspection must occur before backfilling835.
Sources
- KY DHBC - Grayson County Local Building Inspector (2026 county census)
- 815 KAR 7:125, Kentucky Residential Code (Kentucky statewide rule), quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- Onsite Sewage Disposal Systems Program, quoted and re-checked
- 815 KAR 7:125 Kentucky Residential Code, quoted and re-checked
- Kentucky Planning & Zoning entity directory (KADIS) - Grayson County (2026 county census)
- 902 KAR 10:085 Kentucky on-site sewage disposal systems, quoted and re-checked
- Environmental Services, quoted and re-checked
- Frequently Asked Questions (Plumbing), quoted and re-checked
- KRS 198B.674 — Exemptions (Kentucky statewide rule), quoted and re-checked
- 2018 Kentucky Residential Code, Third Edition, quoted and re-checked
- KRS 511.110 — Unlawful camping (Kentucky statewide rule), quoted and re-checked
- 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
- Water Well Information for Home Owners (Kentucky statewide rule), quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- Grayson County Local Building Inspector (dhbc.ky.gov)
- 815 KAR 7:125, Kentucky Residential Code (Kentucky statewide rule), quoted and re-checked
- 815 KAR 7:125, Kentucky Residential Code (Kentucky statewide rule), quoted and re-checked
- KRS 198B.050 Uniform State Building Code (Kentucky statewide rule), quoted and re-checked
- Building Codes, quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- Division of Plumbing Fee Change and Permit Information (Kentucky statewide rule), quoted and re-checked
- Grayson County Health Department, Environmental (dhbc.ky.gov)
- 603 KAR 1:020 Driveway approaches, entrances; construction and maintenance (Kentucky statewide rule), quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- leitchfield.ky.gov, quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- Planning and Zoning – City of Leitchfield, quoted and re-checked
- Environmental Services, quoted and re-checked
- Grayson County Health Department Environmental Fee Schedule, quoted and re-checked
- Onsite Sewage Disposal Systems Program, quoted and re-checked
- 902 KAR 10:085. System Installation Inspection (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
- 902 KAR 10:085 Kentucky Onsite Sewage Disposal Systems (Kentucky statewide rule), quoted and re-checked
- Kentucky Transportation Cabinet District Four, Grayson County Maintenance (transportation.ky.gov)
- Find Your Flood Zone (Kentucky statewide rule), quoted and re-checked
- Zoning Ordinance, quoted and re-checked
- KRS 100.277 — Commission approval required for subdivisions (Kentucky statewide rule), quoted and re-checked
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.