ADU Construction Permits in Cache County, Utah

Building an Accessory Dwelling Unit requires complex zoning, structural, and utility permits.

With a population of around 140,046 residents, Cache County generally runs a more streamlined permitting process than major urban hubs.

Code Compliance & Inspections

Because of severe winter weather in Utah, any exterior structures or footings must be set below the local frost line to prevent shifting, as mandated by the Utah State Building Code.

Zoning & Cost Factors

Utah zoning is heavily influenced by rapid population growth and water availability, with local governments increasingly adopting high-density transit-oriented zoning. Fortunately, Utah maintains relatively builder-friendly regulations, keeping base permit fees competitive.

In Cache County, you can begin your application online through the county's permit portal, or submit blueprints and a property survey in person. Including your contractor's Utah Division of Occupational and Professional Licensing license number helps avoid rejections.

Typical Submittal Package

When applying for a ADU Construction permit, you or your contractor will generally need to submit the following documentation for the city's review:

Standard Ordinances & Processing Time

Key code points for a ADU Construction in Cache County: ADUs typically have maximum square footage limits (often 800-1200 sq ft), height restrictions, and usually require dedicated off-street parking depending on local zoning.

Typical processing time: a few days to several weeks, depending on current workload and the season. Contact Cache County Building Inspection for a current estimate.