Building permits, zoning and land rules in Sanpete County, Utah

Yes. A permit from the County Building Official is required before erecting, constructing, reconstructing or altering a building or structure in unincorporated Sanpete County¹. The county describes most new homes, additions, remodels, structural changes, accessory structures, and electrical, plumbing or mechanical work as permit work². Utah's adopted construction standards apply to construction, alteration, remodeling and repair, subject to statewide and local amendments and statutory exceptions⁶.

Permit work is inspected, and a permit closes when the county issues a certificate of occupancy or records a passing final inspection¹. A permit becomes void after 180 days, but that period restarts whenever a building inspector passes a required inspection; the Building Official may grant an extension for extenuating circumstances¹. Occupancy requires a certificate of occupancy from the county Building Inspection Department unless the Building Official authorizes qualifying temporary occupancy¹.

The Sanpete County Building Department is the first stop for a project in the unincorporated county; its published process begins with registration in the online permit system². The office is at 160 North Main, Suite 201, in Manti, and its phone number is 435-835-2113². Applicants may also need separate approvals from Planning & Zoning and Central Utah Public Health Department².

Sanpete County Planning & Zoning manages zoning applications online and is at 160 North Main, Suite 203, in Manti; call 435-835-2115⁷. A property inside city limits needs zoning approval from the applicable city before the county building-permit application is submitted². Zoning approval for unincorporated land comes from county Planning & Zoning, and septic permits come from Central Utah Public Health Department, not the Building Department^1,3. Starting without a required permit may bring investigation fees equal to the permit fee, although the actual building-permit fee schedule could not be confirmed; ask the Building Department for the current amount².

Yes. Sanpete County's land-use and zoning ordinance governs the unincorporated area, while incorporated cities and towns administer their own zoning approvals^1,2. Minimum lots are 1 acre in the Agricultural zone, one-half acre in RA-1, 1 acre in RA-2 and 5 acres in Sensitive Lands, with separate density standards¹. Agricultural and Sensitive Lands parcels also have a 25% built-area limit, while RA-1 and RA-2 list 100%¹.

The Agricultural, RA-1 and RA-2 zones generally require a 66-foot front setback from the road center or 30 feet from the property line, whichever is greater, plus 10-foot side and rear setbacks¹. Sensitive Lands uses the same front rule but 30-foot side and rear setbacks¹. Non-agricultural structures in the Agricultural, RA-1 and RA-2 zones are generally limited to a basement covered on 2 sides and 2 stories, while Sensitive Lands lists no maximum height; confirm accessory-building height directly with Planning & Zoning because the ordinance table is ambiguous¹. Commercial, industrial and public-facilities zones have different standards, and Sanpete County does not confirm how every tiny home is classified¹.

Central Utah Public Health Department issues onsite wastewater construction permits for Sanpete County³. Contact its Manti office at 125 North 100 East or (435) 835-2231⁸. The application requires a soil classification, site plan and system design; published nonrefundable fees are $600 for a conventional system, $900 for an alternative system and $200 for a repair or replacement³.

Public sewer connection is required when available and practicable⁹. For subdivision lots using septic or sealed vaults, sewer must be more than 300 feet from the subdivision boundary, written state and health-department approval is required, and soil mapping and percolation results must be submitted¹⁰. Operating permits for large underground wastewater disposal systems require annual inspections by qualified onsite professionals¹¹. Only about 6.2% of mapped county soils avoid a “very limited” rating for a conventional drain field, so resolve wastewater feasibility before treating a parcel as buildable¹².

Full-time residential living in a recreational vehicle on a parcel in unincorporated Sanpete County is prohibited¹³. No more than 2 RVs may be permanently placed on a parcel, and each must be licensed, operable, ready for highway use, and equipped with self-contained sewage-disposal and water systems¹³. An RV kept permanently or year-round, including a park model, must connect to a state-approved septic system; permanent skirting and additions are not allowed¹³. Temporary camping on an ordinary private parcel outside an approved RV park or campground could not be confirmed; ask Planning & Zoning before relying on it¹³.

An RV park is a conditional use in county zones and requires an annual business license after health, building and county approvals; if recorded covenants do not set a stay limit, a stay may not exceed 60 consecutive days¹³. Sanpete County does not confirm how every product marketed as a tiny home is classified, so ask Planning & Zoning before purchase¹. A detached accessory dwelling unit needs at least 1 acre, may not exceed 1,000 square feet of habitable floor area, must be site-built rather than a manufactured home, mobile home or RV, and is prohibited in the Sensitive Lands zone; it also needs a permitted septic system and an approved water source¹. A manufactured home is allowed only where a single-family residence is permitted and must sit on a permanent foundation while meeting the applicable zoning, building-code and subdivision rules¹.

1. Confirm that the parcel is in unincorporated Sanpete County; property inside a city or town needs that municipality's zoning approval before a county permit application².
2. Ask Planning & Zoning to confirm the use, zone, lot size and setback standards, then apply online^1,7.
3. Submit a complete development plan to the Planning Commission before dividing land in unincorporated Sanpete County; an agricultural plat exemption requires qualifying agricultural use, zone-compliant parcel sizes and continued agricultural use¹⁴.
4. Submit the soil classification, site plan, system design and fee to Central Utah Public Health Department before septic construction starts³.
5. Resolve access with the County Road Department or, for a state highway, UDOT^15,16.
6. Register online and submit the building-permit application and supporting approvals².
7. Complete required inspections and obtain a passing final inspection or certificate of occupancy¹.

Start with jurisdiction, legal access, water, wastewater feasibility, zoning and the legal status of the parcel. County zoning governs unincorporated land, but cities and towns handle their own zoning approvals^1,2. Sanpete County regulates division, sale and recording of parcels created from larger tracts in the unincorporated county¹⁴. An agricultural division avoids plat requirements only if every resulting parcel qualifies for agricultural use, meets its zone's minimum size and remains agricultural until a later zone change; the approved application must be recorded within 6 months¹⁴.

For county-road access, contact the Road Department; a state-highway connection or change in access intensity uses UDOT's conditional-access process^15,16. A non-production well needs Utah Division of Water Rights approval⁵. Check lot coverage, height and setbacks as well as lot size and density before assuming acreage is buildable¹. Only about 37.7% of county land has a slope of 15% or less, and about 6.2% of mapped soils avoid severe limitations for a conventional drain field¹².