Off-grid site report
Grayson County, KY
37.4864, -86.2659 · 728 ft elevationRead this before you act on anything below. This is my researched starting point for Grayson County, KY, not legal advice and not a guarantee. Rules change, and the deciding facts on any specific parcel (setbacks, perc results, overlay districts, deed restrictions, road frontage) live at the county or town office, not in any database. Before you buy land or build, confirm the current rules directly with the local zoning and health offices - the sources on this page tell you exactly who to call.
The local rulesGrayson County, KY
Zoning & raw-land occupancy
Unclear - verifyI couldn't confirm that Grayson County's fiscal court has adopted a countywide zoning ordinance. The City of Leitchfield, the county seat, does run its own Planning and Zoning Department for land inside city limits, so if you're looking at raw land outside Leitchfield, call the fiscal court directly to ask what applies. source
Dwellings, tiny homes & RVs
Unclear - verifyNo Grayson County ordinance on tiny homes, RVs, or minimum dwelling size turned up in my research. Absent that, you're likely looking at Kentucky's statewide residential code, but whether the county has opted into local permit/inspection enforcement under state law isn't confirmed, so ask the fiscal court or health center before assuming either way.
Building permits & codes
Unclear - verifyI found no official Grayson County page confirming whether the fiscal court enforces building permits countywide. The City of Leitchfield appears to run its own building/permit process within city limits, but for unincorporated land you'd need to confirm directly with the county. source
Septic & composting toilets
Generally allowedSeptic systems are permitted and handled locally by the Grayson County Health Center, which does soil evaluations for new installs and inspects existing and repair systems, working under Kentucky's statewide septic regulations. source
Greywater reuse
Generally allowedGreywater reuse falls under Kentucky's state regulation and is administered locally by the same Grayson County Health Center that handles septic permitting. I didn't find any county-specific rule going beyond the state baseline.
Rainwater harvesting
Generally allowedI found no Grayson County ordinance restricting rainwater collection for non-potable use, so this appears to follow the general state baseline of being allowed.
Private wells & water rights
Generally allowedMost of the county is served by the Grayson County Water District, a public utility the fiscal court created back in the 1970s, but private wells remain an option outside its service area under Kentucky's certified well-driller rules. No separate county well permit was found.
Living disconnected from utilities
Unclear - verifyI couldn't find an official Grayson County rule that either requires or explicitly allows going fully off-grid without utility hookups. This likely comes down to whatever zoning and building enforcement applies to your specific parcel, which itself isn't confirmed for unincorporated areas, so check with the fiscal court.
Sun30-year normals
- Peak-sun hours, annual average
- 4.9 hrs/day
- Worst month (sizes an off-grid array)
- 3.4 hrs/day
- Yearly output per 1 kW of panels
- 1,371 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 49 in/yr
- Snowfall
- 9 in/yr
- Heating degree days
- 4,888 (moderate)
- Frost-free season
- Apr 28 to Oct 11
How far help isstraight-line
- Hospital
Owensboro Health Twin Lakes Medical Center - 1.6 mi
- Fire station
Leitchfield Fire Department - 1.6 mi
- Hardware store
Bee Spring Lumber and Supply - 11.9 mi
- Grocery
Walmart Supercenter - 0.1 mi
From OpenStreetMap. Road miles will be longer, often much longer in hill country.
Plan this spot
These open with this location's real numbers already filled in (ZIP 42755).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Grayson County, KY?The rules above are the jurisdiction. The land check runs the parcel itself: flood zone, soils and septic suitability, wetlands, slope, access, climate, and these verdicts, from a parcel number or coordinates.
Check a parcel →Share or save this report:New report
Sources: US Census Bureau geocoder; NLR PVWatts v8 (solar); NOAA NCEI 1991-2020 climate normals (nearest station) or Open-Meteo (ZIP-centroid) for weather; Open-Elevation; OpenStreetMap contributors. Public data retrieved Aug 22, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.
New here, or not sure where this fits? Start here walks through the whole thing in order.