Off-grid site report

Buchanan County, MO

39.7376, -94.8017 · 965 ft elevation
Read this before you act on anything below. This is my researched starting point for Buchanan 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 rulesBuchanan County, MO

Zoning & raw-land occupancy
RestrictedBuchanan County has adopted countywide zoning under RSMo 64.510-64.690, administered by the county Planning & Zoning Office, covering all unincorporated land. Incorporated cities like St. Joseph have their own separate codes. source
Dwellings, tiny homes & RVs
Varies locallyA building permit is required for any structure in any zoning district regardless of acreage, per the county ordinance; mobile homes need a conditional use permit. No specific tiny-home or RV minimum-size standard was confirmed, so ask the county. source
Building permits & codes
RestrictedThe county Planning & Zoning Office requires a building permit for any structure countywide; unpermitted construction can have fees doubled or face demolition. It's not confirmed whether a specific IRC/IBC edition is formally adopted for unincorporated areas. source
Septic & composting toilets
RestrictedMissouri DHSS sets statewide minimum OWTS standards, but in Buchanan County it's the county Planning & Zoning Office, not a health department, that issues septic permits locally. source
Greywater reuse
Unclear - verifyNo Buchanan County or Missouri DHSS/DNR rule specifically addressing greywater reuse was found; check with the county Planning & Zoning Office, which handles onsite wastewater permitting.
Rainwater harvesting
Generally allowedNo Buchanan County ordinance restricting rainwater collection was found, so the general state allowance appears to apply, though this isn't formally confirmed at the local level.
Private wells & water rights
RestrictedWell construction is governed statewide by Missouri DNR's Well Construction Rules; no Buchanan County-specific well ordinance was found in official sources. source
Living disconnected from utilities
Generally allowedNo county ordinance prohibits disconnecting from public utilities, but any structure and its wastewater system still need county building/septic permits regardless. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average
5.1 hrs/day
Worst month (sizes an off-grid array)
3.5 hrs/day
Yearly output per 1 kW of panels
1,454 kWh
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Weather1991-2020

Precipitation
36 in/yr
Heating degree days
5,458 (moderate)
Frost-free season
Apr 16 to Oct 13

How far help isstraight-line

Hospital
Mosaic Life Care at St. Joseph
3.0 mi
Fire station
St. Joseph Fire Department - Station 11
1.8 mi
Hardware store
Ace Hardware
1.1 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 64503).

Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt

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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.