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

Yes. Unincorporated Utah County requires owners or their agents to obtain a building permit before starting construction, changing a building's use, or doing regulated electrical, gas, mechanical, or plumbing work¹. Utah County adopts the Utah State Construction Code and the agricultural-building appendix; its listed codes include the 2021 International Residential Code, 2024 International Building Code, and 2023 National Electrical Code, with frost depth of 30 inches or a deeper engineer's design¹¹. A structure used only for agriculture and not for human occupancy may qualify for an exemption, but the applicant must first file with Community Development and receive the county's determination; building without that approval can bring fines¹². Separate zoning approval and health, fire, plumbing, electrical, or mechanical requirements may still apply^13,14. A qualifying sole owner may use the county's owner-builder certification for personal, noncommercial residential work, subject to limits on project history and labor⁸. Permitted work must be inspected before concealment, and occupancy must wait for final approval^1,15.

Utah County Community Development's Building Division issues building permits for unincorporated Utah County from 51 South University Avenue, Suite 117, Provo, Utah 84601¹. Call 801-851-8343 or email comdev@utahcounty.gov¹. City building offices issue building permits in American Fork¹⁶, Payson¹⁷, Highland¹⁸, Alpine¹⁹. Utah County Health Department handles septic permits countywide³. Submit the building-permit application with the plans and documents required for the project type; Community Development approval is required before construction, alteration, or expansion begins^1,5. The published schedule prices residential building permits at $1 per square foot, with a $101 minimum and a $300 new-building submittal fee; it also lists distance surcharges per required inspection and says bonds are not included²⁰. Access permits, floodplain development permits, excavation permits, or land-disturbance permits may also apply⁵.

Utah County Community Development administers zoning only in unincorporated Utah County². Municipal zoning applies in American Fork²¹, Payson²², Highland²³, Santaquin²⁴, Town of Vineyard²⁵, Alpine²⁶, Bluffdale (mainly in Salt Lake County, reaching into Utah County)²⁷. Septic permits within Utah County remain with Utah County Health Department; Highland also requires city-inspector approval of a compliant percolation test unless connecting to approved sewer^3,28. A one-family dwelling generally needs 5 acres in RA-5 or RR-5, subject to exceptions, and 50 acres in CE-1^7,9. RA-5 generally requires a 30-foot front setback and 15-foot side and rear setbacks, subject to Chapter 3 alternatives and specified exceptions⁷. RR-5, TR-5 and CE-2 generally use the same distances, subject to street or plat requirements⁷. I-1 generally requires a 30-foot front setback; building and fire codes determine side and rear setbacks, with at least 15 feet at specified residential-zone or city boundaries⁷. Request written zoning clearance for the parcel¹³.

Utah County Health Department Environmental Health administers onsite wastewater review and septic permits throughout Utah County, including addresses inside cities³. The septic system permit and plan-review fee is $1,800, including the current state fee; repairs, alternative systems, holding tanks, and abandonment have separate entries⁶. A vault privy is a regulated off-grid option requiring county review, a septic permit, and inspection; the listed fee is $1,805⁶. Call Environmental Health at (801) 851-7525 or visit the Health and Justice Building, 151 S University Ave, Suite 2600, Provo, Utah 84601²⁹. Annual inspections are identified for operating permits associated with large underground wastewater disposal systems, not as a universal annual requirement for every residential septic system³⁰. A dwelling must connect to public sewer when available and practicable; otherwise it needs an adequate onsite or approved wastewater system³¹.

Unincorporated Utah County defines camping as recreational or temporary overnight use lasting less than 45 days per calendar year; applicable zoning, building, sanitation and fire rules still apply⁷. Recreation-vehicle courts and commercial campgrounds separately limit each RV or camp user to 45 days per calendar year⁷. We could not confirm private-parcel RV residence or tiny-home-on-wheels occupancy; ask Planning & Zoning about the proposed parcel and use¹³. Camping on county-owned, used or leased property in unincorporated Utah County requires a designated county campground or advance written authorization³².

In unincorporated Utah County RR-5, a qualifying primary dwelling needs 1,100 square feet of combined ground-floor and above-ground habitable area, excluding basements and non-habitable areas; A-40 instead requires 1,100 square feet on the ground floor⁷. An accessory dwelling requires a permitted zone, a complete application, code and water/sewage compliance, and a qualifying lot; the limit is one unit per parcel, normally up to 1,000 square feet, with two additional off-street parking spaces⁷. Larger units require the restrictive-covenant and moderate-income rental exception; detached units also cannot exceed 40% of the main dwelling or 1,500 square feet⁷. Manufactured homes have separate federal-seal, foundation, building-permit and zoning conditions⁷.

1. Confirm the jurisdiction: Utah County Community Development handles zoning approval and building permits only outside city limits; cities handle their own zoning and building permits².

1. Request written zoning clearance and verify the zone, dwelling use, lot size, setbacks, and subdivision status^7,9,13.

1. Secure water. A private well requires a valid water right and a state Start Card before construction¹⁰.

1. Obtain the Utah County Health Department septic permit, or confirm that connection to available, practicable public sewer is required^6,31.

1. Submit plans showing scope, location and elevation to Public Works and obtain a floodplain development permit before any construction, grading, excavation or other alteration in a designated floodplain in unincorporated Utah County⁴. Obtain a county-road access permit for a county-road driveway; a state-highway connection instead requires UDOT approval^33,34.

1. Submit the building-permit application and plans, respond to corrections, pay the building-permit fees, and obtain approval before work begins^1,20.

1. Schedule building inspections before concealment and obtain final approval before occupancy^1,15.

Start with zoning and buildability: Utah County's minimum lot size varies sharply by district, and recorded-development or nonconforming-lot status can change the answer^7,9. Dividing land generally requires subdivision review and a recorded plat, but a division of qualifying agricultural land can avoid plat requirements only while every resulting parcel remains agricultural and the required notice is recorded^7,13. Verify wastewater feasibility with Environmental Health and verify water rights before assuming a domestic well can be drilled^3,10. Map flood hazards because man-made development in a designated floodplain needs a floodplain development permit before work starts⁴. For a residential driveway onto a county road, the county generally allows no more than two driveways, each no wider than 30 feet, and requires engineered drainage and a hard surface rather than gravel or dirt³³. A state-highway connection requires UDOT approval³⁴.