Off-grid site report

Callaway County, MO

38.9162, -91.9502 · 801 ft elevation

Read this before you act on anything below. This is my researched starting point for Callaway County, MO, 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 rulesCallaway County, MO

Zoning & raw-land occupancy

Generally allowedCallaway County has not adopted countywide planning or zoning, so unincorporated land has no county use-district or setback rules. Incorporated cities (Fulton, Holts Summit, New Bloomfield, Mokane, Kingdom City, Auxvasse, Lake Mykee) may zone separately. source

Dwellings, tiny homes & RVs

Unclear - verifyNo county rule on dwelling size, tiny homes, or RV living was found; not confirmed. Any such rule would come from a city, not the county.

Building permits & codes

Generally allowedCallaway County states no occupancy or building permits are required in unincorporated areas. Cities within the county may require their own permits. source

Septic & composting toilets

RestrictedThe Callaway County Health Department handles onsite wastewater permitting (site evaluation plus permit to construct) under Missouri DHSS statewide OWTS standards. Composting toilets specifically are not confirmed either way. source

Greywater reuse

Unclear - verifyNo county or state source found addressing greywater reuse specifically; not confirmed. Ask the county health department about local nuisance-based expectations.

Rainwater harvesting

Generally allowedNo Callaway County ordinance restricts rainwater collection; the state baseline with no local modification appears to apply. source

Private wells & water rights

RestrictedMissouri DNR's statewide well construction rules govern private wells; no separate county well-construction ordinance was found. The county health department offers a water-testing referral. source

Living disconnected from utilities

Generally allowedNo county ordinance requires connecting a residence to utilities. A separate Utility Right-of-Way permit is needed only if lines cross a county road, issued by the County Road and Bridge Engineer. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 4.9 hrs/day
Worst month (sizes an off-grid array): 3.3 hrs/day
Yearly output per 1 kW of panels: 1,384 kWh

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Weather1991-2020

Precipitation: 45 in/yr
Snowfall: 20 in/yr
Heating degree days: 5,202 (moderate)
Frost-free season: Apr 10 to Oct 24

How far help isstraight-line

Hospital SSM Health Saint Mary's Hospital - Audrain: 18.1 mi
Fire station COU ARFF: 16.1 mi
Hardware store Orcheln Farm and Home: 16.1 mi
Grocery Walmart Supercenter: 3.6 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 65262).

Size a solar system Heat loss & insulation Firewood per winter Rainwater harvest Garden size Panel tilt

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.