Salt Lake County Building Services only issues permits for unincorporated areas of the county. Most of the county population resides in incorporated cities like Salt Lake City, West Valley City, and Sandy, which maintain their own building departments and zoning authorities. Development in unincorporated areas is subject to specific Foothills and Canyons Overlay Zones (FCOZ) which impose strict design and environmental standards.
How this fits with the state
The state authority here is Utah Division of Professional Licensing. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.