Off-grid site report
Grundy County, MO
40.1185, -93.5572 · 892 ft elevationRead this before you act on anything below. This is my researched starting point for Grundy 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 rulesGrundy County, MO
Zoning & raw-land occupancy
Unclear - verifyI couldn't find an official Grundy County, MO zoning ordinance, and Missouri law requires second- and third-class counties like Grundy to pass a voter referendum before adopting countywide zoning, so it's possible the county has never done so. Zoning authority may instead sit with individual cities or townships, so check with Grundy County government directly and with the city/township where your land sits. source
Dwellings, tiny homes & RVs
Unclear - verifyThere's no statewide Missouri statute on tiny homes, dwelling size minimums, or RV residency, and I found no Grundy County ordinance on the subject either. This is the kind of thing that gets decided town by town, so ask Grundy County government or the relevant incorporated city if you're inside one.
Building permits & codes
Unclear - verifyMissouri has not adopted a mandatory statewide building code, leaving adoption up to individual cities and counties, and I could not confirm that Grundy County has adopted the IRC, IBC, or IECC or set up a countywide permitting office. Permitting may only exist inside incorporated towns like Trenton, so confirm directly with Grundy County government and any town office. source
Septic & composting toilets
RestrictedMissouri's Department of Health and Senior Services sets statewide minimum standards for onsite wastewater treatment systems, and in most counties the local health department handles permitting. The Grundy County Health Department is the most likely local contact for septic or composting toilet permits, though I couldn't confirm a county-specific septic policy page. source
Greywater reuse
Unclear - verifyI found no statewide Missouri rule specifically addressing greywater reuse, and no Grundy County policy on it either. Best bet is to call the Grundy County Health Department directly and ask how they want greywater handled.
Rainwater harvesting
Generally allowedMissouri state law protects a landowner's right to collect rainwater on their own property, and I found no Grundy County ordinance restricting this. This is a state-level protection, so it should hold across the county absent a local rule saying otherwise.
Private wells & water rights
RestrictedWells in Missouri are regulated entirely at the state level by the Department of Natural Resources under the Water Well Drillers Act and the Missouri Well Construction Rules (10 CSR 23), with no county-by-county permitting layer. Homeowners can drill their own well without a permit but still must meet the state construction standards, and I found no Grundy County-specific well rule layered on top. source
Living disconnected from utilities
Generally allowedMissouri state law protects reliance on a private water system instead of hooking up to a public utility, as long as you meet DNR's well construction rules, and I found no Grundy County ordinance mandating utility connection. Still, it's worth double-checking with Grundy County government in case any incorporated town within it requires hookup.
Sun30-year normals
- Peak-sun hours, annual average
- 5.0 hrs/day
- Worst month (sizes an off-grid array)
- 3.4 hrs/day
- Yearly output per 1 kW of panels
- 1,424 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 40 in/yr
- Snowfall
- 17 in/yr
- Heating degree days
- 5,774 (cold)
- Frost-free season
- Apr 20 to Oct 16
How far help isstraight-line
- Hospital
Hedrick Medical Center - 20.8 mi
- Fire station
Jamesport Fire & Rescue - 16.4 mi
- Hardware store
Trenton Plumbing Supply - 3.2 mi
- Grocery
Hy-Vee - 3.8 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 64683).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Grundy County, MO?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.