Off-grid site report

Teton County, WY

43.8106, -110.6488 · 6,933 ft elevation
Read this before you act on anything below. This is my researched starting point for Teton County, WY, 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 rulesTeton County, WY

Zoning & raw-land occupancy
RestrictedTeton County has adopted full countywide zoning through its Land Development Regulations, dividing land into zone districts with specific allowed uses and densities; this differs from many unzoned Wyoming counties. source
Dwellings, tiny homes & RVs
RestrictedThe county's LDRs prohibit using an RV or camper trailer as permanent living quarters except temporarily during active construction under a building permit. Tiny-house specific standards are not confirmed on an official page. source
Building permits & codes
RestrictedTeton County has adopted its own International Residential/Building Code with local amendments, and even small structures under 500 sq ft require a permit through the county's online portal. source
Septic & composting toilets
RestrictedThe county's Small Wastewater Facility Regulations, administered by a county Sanitarian, implement state DEQ standards and require permits for septic installation; self-contained composting/incinerating toilets skip the construction permit but need a Certificate of Completion filed. source
Greywater reuse
Generally allowedNo Teton County-specific greywater ordinance was found; the state DEQ wastewater-reuse permitting framework applies as the default. source
Rainwater harvesting
Generally allowedNo county ordinance restricting rainwater harvesting was found; this defers to the state, where the State Engineer's Office does not regulate typical residential rainwater collection.
Private wells & water rights
RestrictedWells are permitted entirely through the Wyoming State Engineer's Office, not the county; state statute requires a permit before any well construction begins. source
Living disconnected from utilities
Varies locallyNo county rule mandates grid utility hookups for a permitted dwelling, but because RV/camp living is restricted, off-grid power setups only really work paired with a code-compliant permanent house. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average
4.8 hrs/day
Worst month (sizes an off-grid array)
2.6 hrs/day
Yearly output per 1 kW of panels
1,323 kWh
JFMAMJJASOND

Weather1991-2020

Precipitation
22 in/yr
Heating degree days
10,313 (severe)

How far help isstraight-line

Hospital
Saint John's Medical Center
23.3 mi
Fire station
none within range
Hardware store
Jackson Lumber
23.6 mi
Grocery
General Store
6.5 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 83012).

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.