Iron County, UT Parking Rules: Commercial & Oversized Vehicles (2026)

Section 17.36.150 flatly prohibits the storage of commercial vehicles on any lot zoned agricultural or residential in unincorporated Iron County, covering districts such as A-20, RA-20, RR-20, R-5, R-2, R-1, R-1/2 and R4K. The ban does not reach agricultural machinery and equipment that is ancillary to an agricultural use on the same property, recognizing that farm trucks, tractors and implements are part of normal agricultural operations rather than commercial storage. Construction equipment gets a narrower exception: it may be kept on a residential or agricultural lot only while a building is actively being constructed on that lot, and even then the storage cannot continue for more than one year.

The rule sits in Chapter 17.36, General Requirements and Property Development Standards, alongside the county's other yard and use restrictions, and applies regardless of whether the vehicle is parked in a driveway, side yard or open field on the property. It is separate from the home-occupation rules in Section 17.36.020, which separately limit a home business to one motorized vehicle no larger than one ton and one trailer under 20 feet, with no commercial vehicle allowed for that use either. Iron County Planning and Zoning/Building fields complaints about parked semi-trucks, dump trucks and similar commercial equipment in residential neighborhoods and can order the vehicle removed from the lot.