Off-grid site report
Calloway County, KY
36.6622, -88.3096 · 535 ft elevationRead this before you act on anything below. This is my researched starting point for Calloway 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 rulesCalloway County, KY
Zoning & raw-land occupancy
Unclear - verifyCalloway County's ordinance list shows subdivision regulations for 6+ lot developments but no general zoning ordinance dividing the county into land-use districts. Single-parcel raw land occupancy is likely unrestricted by county zoning, but this isn't fully confirmed, so I'd call the county to be sure. source
Dwellings, tiny homes & RVs
Unclear - verifyNo Calloway County ordinance on tiny homes or RVs as dwellings turned up in my research; this falls back to the state residential code baseline. Not confirmed at the county level. source
Building permits & codes
Generally allowedCalloway County has an active local building inspection program enforcing the statewide 2018 Kentucky Residential Code, so construction here goes through local plan review and inspection. source
Septic & composting toilets
Generally allowedThe Calloway County Health Department requires a two-stage site evaluation and permit-to-construct process for onsite sewage systems, with installation by a certified installer and a final inspection. source
Greywater reuse
Generally allowedNo county-specific greywater ordinance was found, so this defers to Kentucky's state regulation (902 KAR 10:085), which permits greywater reuse under state rules. source
Rainwater harvesting
Generally allowedNo Calloway County ordinance or health department guidance on rainwater catchment was found, so it appears to follow the unregulated state baseline for non-potable use.
Private wells & water rights
Generally allowedNo county-specific well permit or fee was found beyond the state requirement to use a certified driller; a majority of the county is on public water but private wells remain legal and used. source
Living disconnected from utilities
Unclear - verifyNo Calloway County ordinance requiring connection to electric, water, or sewer utilities for occupancy was found in county records; building code compliance is still required regardless. source
Sun30-year normals
- Peak-sun hours, annual average
- 4.9 hrs/day
- Worst month (sizes an off-grid array)
- 3.7 hrs/day
- Yearly output per 1 kW of panels
- 1,366 kWh
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Weather1991-2020
- Precipitation
- 56 in/yr
- Snowfall
- 8 in/yr
- Heating degree days
- 3,773 (moderate)
- Frost-free season
- Apr 2 to Nov 3
How far help isstraight-line
- Hospital
Murray-Calloway County Hospital. - 3.8 mi
- Fire station
City of Murray Fire Station #2 - 1.5 mi
- Hardware store
Lowe's - 2.5 mi
- Grocery
Walmart Supercenter - 2.5 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 42020).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Calloway 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.