Off-grid site report

Platte County, MO

39.2087, -94.6438 · 945 ft elevation

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

Zoning & raw-land occupancy

RestrictedPlatte County has countywide zoning under its Zoning Order of 1990, as amended, enforced by the Platte County Planning Commission in unincorporated areas. source

Dwellings, tiny homes & RVs

Unclear - verifyNo specific tiny-home or RV residency standard was found on official county pages; general zoning/building permitting applies and incorporated towns like Platte City may add their own rules. Confirm with county Planning & Zoning. source

Building permits & codes

RestrictedPlatte County has adopted the 2018 International Residential Code and 2018 International Energy Conservation Code, plus its own Zoning Order and Subdivision Regulations, for unincorporated areas. source

Septic & composting toilets

RestrictedA permit from the Platte County Health Department's Environmental Health/Sanitarian is required before installing an onsite wastewater system, under the county's own sewage disposal construction standards. Composting toilets are not specifically addressed and should be confirmed with the department. source

Greywater reuse

Unclear - verifyNo Platte County or state-specific greywater ordinance was found; this matches Missouri's general silence on the topic, but ask the county Health Department before relying on any assumption.

Rainwater harvesting

Generally allowedNo county restriction on rainwater harvesting was found, so it appears to follow Missouri's general state-level allowance, though this isn't independently confirmed by a county-specific page.

Private wells & water rights

RestrictedWell construction statewide, including in Platte County, is governed by Missouri's Water Well Drillers Act and DNR Well Construction Rules; a homeowner can self-drill without a permit but must still meet state construction standards, and paid drilling requires a DNR-licensed contractor. source

Living disconnected from utilities

Generally allowedNo county ordinance bans full utility disconnection; a private well and onsite septic can substitute for public water/sewer, but the county's building permit process verifies a septic/sewer permit and water availability approval before sign-off. 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): 3.7 hrs/day
Yearly output per 1 kW of panels: 1,448 kWh

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Weather1991-2020

Precipitation: 39 in/yr
Snowfall: 13 in/yr
Heating degree days: 4,686 (moderate)
Frost-free season: Apr 5 to Nov 2

How far help isstraight-line

Hospital Camber Kansas City - Children's Mental Health Hospital: 4.6 mi
Fire station Kansas City Kansas Fire Station 18: 5.6 mi
Hardware store Locks and Pulls: 4.9 mi
Grocery Jasmine Mini Mart: 3.2 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 64151).

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.