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ADU Construction · Emery County, Utah
In Utah, a ADU Construction requires a building permit.
An accessory dwelling unit (ADU) always requires a building permit because it adds a habitable dwelling, including electrical, plumbing, mechanical permits and egress/zoning review. Plans are reviewed under the Statewide (local may vary) code (IRC 2024); apply through Emery County Planning & Zoning before work begins.
Source: Statewide (local may vary), IRC 2024 · Verified 2026 by StateDataIndex
Building an Accessory Dwelling Unit requires complex zoning, structural, and utility permits.
With a population of around 10,046 residents, Emery County generally runs a more streamlined permitting process than major urban hubs.
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.
Regardless of the state permit rule above, Emery County still enforces property-line setbacks and local zoning for your ADU Construction. A permanent foundation or any electrical/plumbing hookup can also change what is required, so confirm with Emery County Planning & Zoning before building.
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.
Permit fees vary by jurisdiction and by your project's valuation, so there is no single fixed figure for Emery County. We only publish fees confirmed by real homeowners — none have been reported here yet.
Confirm the current fee directly with Emery County Planning & Zoning ((435) 381-5374). If you have paid for a permit here, you can add it here to help others.
Office: Emery County Planning & Zoning
Address: 75 E Main St, Castle Dale, UT 84513, USA
Phone: (435) 381-5374
Source: official Emery County government records. Hours and procedures can change — call ahead to confirm.
In Emery 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.
When applying for a ADU Construction permit, you or your contractor will generally need to submit the following documentation for the city's review:
Key code points for a ADU Construction in Emery 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 Emery County Planning & Zoning for a current estimate.
Building without authorization is considered a code violation. The local government can issue a Stop Work Order, forcing you to halt construction immediately. You may be subject to retroactive permit fees (often double the original cost), daily fines, or even a mandate to tear down the unpermitted work at your own expense.
Yes. Utah generally allows property owners to act as their own general contractor under an Owner-Builder exemption. If you take this route, you assume full legal and financial liability and must ensure all work complies with the Utah State Building Code.
Permit fees vary by jurisdiction and by your project's valuation, so Emery County does not publish a single fixed figure. Confirm the exact fee with the local building department before applying.
Processing time in Emery County varies by season and current application volume at the building department; contact Emery County Planning & Zoning for a current estimate.
You can apply through the Emery County Planning & Zoning or online via the county permit portal. For questions, call (435) 381-5374.
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