Utah

Utah Permit Guide for Metal Carports, Garages and Barns

In Utah, a metal carport, garage or barn usually needs a building permit from your city or county, because the State Construction Code applies in every part of the state. The main exceptions are small one-story accessory buildings covered by the code's exempt-work list, and buildings used only for agriculture that meet the acreage rules in state law. Getting a Utah carport permit means going to the building department for the city you live in, or to the county if you're outside city limits. Most of them will also check zoning setbacks before they sign off. Start by calling that office with your building size and parcel number.

Building code in effect

Utah has one building code for the whole state. It's called the State Construction Code, and you'll find it in Utah Code Title 15A. Homes and residential accessory buildings like garages and carports are built to the 2021 International Residential Code with Utah's own amendments. Other buildings fall under the 2024 International Building Code, which replaced the 2021 edition on July 1, 2026. State law (Utah Code 15A-1-204) says every city and county has to follow this code, and it generally can't add its own rules that are stricter than the code on the same subject. That means the structural rules are mostly the same across the state. Zoning, setbacks and fees still change from place to place.

Who issues permits

The state doesn't issue building permits. Utah Code 15A-1-205 says the state division doesn't do inspections or issue permits unless a local government designates it to. Your city's building official handles permits and inspections inside city limits. Outside a city, the county building department does it. Zoning is a separate review, and it's usually done by the same city or county planning office. Lot coverage, setbacks and accessory building height limits come from local zoning, not the building code.

County permit guides

County guides are coming soon.

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When you need a permit

Garages and enclosed buildings: A metal garage, shop or enclosed barn on a home lot is regulated under the State Construction Code, so plan on a building permit unless it qualifies for an exemption.
Small one-story buildings: The IRC exempt-work list (R105.2) applies in Utah with state changes. Utah's amendments rewrite the items on retaining walls and decks and add storage conex boxes under 350 square feet, so ask your building official what size accessory building is exempt where you live.
Farm buildings: A building used only for agriculture and not lived in is exempt from the State Construction Code if the land meets the acreage rules in Utah Code 15A-1-204(11). Most counties have you file a short exemption form first.
Electrical and plumbing: Even when the building itself is exempt, state law says a plumbing, electrical or mechanical permit may still be required for that work.
Commercial property: A carport or metal building for a business is reviewed under the 2024 International Building Code, which usually means sealed drawings and plan review.

Farm buildings

Utah Code 15A-1-204(11) says a structure used only for agriculture, and not for human occupancy, is exempt from the State Construction Code. State law defines agricultural use as tilling soil, raising crops, or keeping or raising domestic animals. The exemption doesn't apply inside a city or town on less than five contiguous acres, or inside a county-approved subdivision on less than two contiguous acres, unless the land is in an agricultural protection area. A plumbing, electrical or mechanical permit may still be required. Counties put this into practice with their own forms. For example, Utah County's Agricultural Use Exemption Application asks for a site plan and floor plan and requires a setback inspection before construction. It also says any later change from an exempt farm use needs a new permit.

Wind and snow

Snow is the big structural issue in Utah. Ground snow loads go up quickly with elevation. Utah's amendments to the residential code replace the IRC snow load table with values for listed Utah cities. For places not on that list, they point to the Utah Snow Load Study from Utah State University. So a building in a mountain valley can need a much stronger roof than the same building on the valley floor a few miles away. Canyon winds and open desert also matter in some areas. Before you order, ask your local building office what ground snow load and wind speed your building has to be engineered for at your exact address. Our partnered manufacturers offer certified buildings rated for 140 MPH wind and 35 PSF snow load, and higher ratings can be quoted where required.

Before you order

Call your city or county building department with your parcel number and ask three things: the ground snow load for your site, the design wind speed, and whether your building size needs a permit.
If you're counting on the farm exemption, check your acreage and whether you're inside city limits or a platted subdivision first, then file the county's exemption form before you build.
Look at your HOA or subdivision covenants. Many Utah subdivisions limit metal buildings, colors or height even when the county allows them.
Plan for engineered drawings that match your local snow load, and get the setback inspection or site plan approved before the pad is poured.

Common questions

Do I need a permit for a carport in Utah?
Usually, yes. Utah uses one State Construction Code statewide, and your city or county building department issues the permit. Small one-story accessory buildings on the IRC exempt list and qualifying farm buildings are the main exceptions, so check the size limit with your local office.

Do I need a permit for a metal garage in Utah?
Yes, in most cases. An enclosed metal garage on a home lot falls under the 2021 International Residential Code as amended by Utah, and you'll also need to meet local zoning setbacks. Your city or county will tell you what drawings and snow load rating they need.

Are farm buildings exempt in Utah?
They can be. Under Utah Code 15A-1-204(11), a building used only for agriculture and not for people to live in is exempt from the State Construction Code. Acreage limits apply inside cities and subdivisions. Electrical or plumbing work may still need a permit, and most counties ask you to file an exemption form.

Can my city have stricter building rules than the state?
Generally no. Under Utah Code 15A-1-204(8), cities and counties can't adopt building rules that are more restrictive than the State Construction Code on the same subject, with a few narrow exceptions. Zoning rules like setbacks and height limits are still local.

Sources

Permit rules change. Always confirm with your local permit office before you build.

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