Off-grid site report

Audrain County, MO

39.1173, -91.8946 · 853 ft elevation

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

Zoning & raw-land occupancy

Unclear - verifyAudrain County confirms on its own FAQ page it has no Planning & Zoning department, so there is no countywide zoning ordinance for unincorporated land. Incorporated towns like Mexico, Vandalia, or Farber may have their own codes, not confirmed here. source

Dwellings, tiny homes & RVs

Unclear - verifyNo county-level rule on tiny homes, RVs, or dwelling minimums was found; because there's no county zoning or building code, this would fall to individual incorporated towns, not confirmed for any specific town.

Building permits & codes

Unclear - verifyMissouri has no statewide mandatory building code, and Audrain County has no county-level residential/commercial code on file. The City of Mexico has its own Building Official and Code Enforcement for property within its limits. source

Septic & composting toilets

RestrictedThe Audrain County Health Department actively administers an on-site sewage ordinance and issues septic permits, within Missouri DHSS's statewide onsite wastewater framework. Composting toilets are not addressed on any official page found. source

Greywater reuse

Unclear - verifyNo Audrain County or Missouri DHSS/DNR page specifically addresses greywater reuse. Not confirmed; call the Audrain County Health Department directly.

Rainwater harvesting

Generally allowedNo county-specific restriction was found; this inherits Missouri's generally permissive state-law stance on rainwater harvesting.

Private wells & water rights

RestrictedMissouri DNR regulates well construction, plugging, and contractor permitting statewide, and the Audrain County Health Department offers well-water bacteriology testing support. Public Water Supply Districts also serve parts of the county. source

Living disconnected from utilities

Generally allowedWith no countywide zoning, there is no confirmed county mandate to connect to public utilities on unincorporated land; incorporated towns may set their own rules, not confirmed for any specific town. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 5.0 hrs/day
Worst month (sizes an off-grid array): 3.2 hrs/day
Yearly output per 1 kW of panels: 1,417 kWh

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Weather1991-2020

Precipitation: 44 in/yr
Snowfall: 19 in/yr
Heating degree days: 5,228 (moderate)
Frost-free season: Apr 12 to Oct 24

How far help isstraight-line

Hospital SSM Health Saint Mary's Hospital - Audrain: 3.9 mi
Fire station Little Dixie Fire Station #1: 4.1 mi
Hardware store Orcheln Farm and Home: 1.9 mi
Grocery Walmart Supercenter: 0.3 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 65265).

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.