Off-grid site report
Carbon County, WY
41.8486, -106.3770 · 6,828 ft elevationRead this before you act on anything below. This is my researched starting point for Carbon 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 rulesCarbon County, WY
Zoning & raw-land occupancy
RestrictedCarbon County has adopted its own Zoning Resolution and Comprehensive Land Use Plan, administered by the Planning & Development Department, unlike many unzoned rural WY counties. source
Dwellings, tiny homes & RVs
Varies locallyRules for tiny homes, RVs, and manufactured homes depend on zoning classification per the county, but specific size or occupancy standards were not found in official text; not confirmed at the ordinance level. source
Building permits & codes
RestrictedThe county requires a building permit for most new structures (with some fence and ag-tank exceptions) and ties occupancy permits to state water-supply and electrical code compliance. source
Septic & composting toilets
RestrictedUnusually, Wyoming DEQ itself, not a county health department, is the direct permitting authority for septic systems in Carbon County under its Small Wastewater Facility program. source
Greywater reuse
Unclear - verifyNo Carbon County-specific greywater rule was found; the state DEQ permit-by-rule framework likely applies by default, but this is not confirmed locally. Ask Wyoming DEQ or the county Planning Department.
Rainwater harvesting
Unclear - verifyNo Carbon County ordinance on rainwater harvesting was found; the state baseline of no prohibition appears to apply, but this is not confirmed at the county level.
Private wells & water rights
RestrictedPrivate wells are permitted at the state level by the Wyoming State Engineer's Office, and the county's own building permit process cross-references this requirement. source
Living disconnected from utilities
Varies locallyNo countywide rule requiring utility hookup was found, so off-grid power appears workable, but occupied structures must still meet building permit conditions on water supply and electrical code. source
Sun30-year normals
- Peak-sun hours, annual average
- 5.3 hrs/day
- Worst month (sizes an off-grid array)
- 3.2 hrs/day
- Yearly output per 1 kW of panels
- 1,537 kWh
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Weather1991-2020
- Precipitation
- 12 in/yr
- Snowfall
- 79 in/yr
- Heating degree days
- 8,307 (severe)
- Frost-free season
- Jun 2 to Sep 11
How far help isstraight-line
Service data unavailable for this spot.
Plan this spot
These open with this location's real numbers already filled in (ZIP 82327).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Carbon County, WY?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.