Off-Grid Living in Sanpete County, Utah

Researching off-grid options in Sanpete County, Utah means keeping two levels of government straight: the county itself, which has adopted comprehensive zoning under its Land Use Ordinance, and the various incorporated towns (Manti, Ephraim, Mt. Pleasant, and the rest) that run their own zoning on top of that. This brief is about unincorporated county land. If your parcel sits inside a town boundary, that town's code can be stricter and overrides what's below.

Zoning. Sanpete County is not a "no zoning" county. It's divided into zones under a Land Use Ordinance adopted pursuant to Utah's County Land Use Development and Management Act, and what you can do with raw land (park an RV, put up a yurt, live in a tent) depends on which zone your parcel falls in. I did not find an official statement that any zone allows unrestricted primitive living, so I'd call this restricted and confirm zone-specific rules with Planning & Zoning before assuming anything.

Dwellings and permits. The county's Planning & Zoning office is clear that approval is required before construction starts, and that the agricultural-exemption path is only for structures used exclusively for agriculture, not residential use. So a tiny home or cabin goes through standard permitting. There is one specific carve-out worth knowing: the county's Land Use Ordinance reportedly allows a single storage shed up to 120 square feet in any zone without a building permit. Note also that the county enacted a temporary moratorium on construction and development for anything accessing Pine Creek Road, so if that's near your land, check current status before you plan.

Septic and greywater. Septic permits don't come from the county directly, they come from the Central Utah Public Health Department (serving Sanpete, Millard, Sevier, Juab, Wayne, and Piute counties under state law allowing counties to form joint health districts). I found no Sanpete-specific greywater ordinance, so greywater reuse appears to fall back on the state's standard permit-through-local-health-department framework, administered by that same district office.

Rainwater. No county rule modifies the state's rainwater harvesting allowance, so this looks straightforwardly permitted under state law.

Wells. Well permits come from the state, specifically the Utah Division of Water Rights' Richfield regional office, not the county. You need an approved water right before drilling; the state issues a "Start Card" once that's approved, which functions as your construction permit.

Off-grid utilities. I could not confirm any blanket rule requiring grid hookup for occupancy. What I did find is that subdivision approvals have required letters confirming septic approval and power availability, which suggests utility documentation matters at the subdivision-creation stage, but that's not the same as banning off-grid living on an existing lot. Worth a direct call to Planning & Zoning to clarify your specific situation.

Bottom line: Sanpete County is workable for off-grid living, but nearly everything routes through either county Planning & Zoning/Building, or the Central Utah Public Health Department for septic, or the state's Division of Water Rights for wells. Don't rely on assumptions, call the named offices.