ADU Permit Requirements in New Harmony, UT
The Town of New Harmony handles zoning/land use but does not run its own building-permit program. After Town Clerk approval (permission letter) and New Harmony Valley Fire District sign-off, the building permit is issued by Washington County Community Development. A building permit is required for buildings of 400 sq ft or more that have electrical and plumbing. Utah enforces the statewide 2021 IRC (Title 15A), effective July 1, 2023.
By Joey, Founder · Last verified June 1, 2026 · How we research →
When you need a ADU permit
UT (Washington County, ZIP 84757), an accessory dwelling unit (ADU) requires a building permit from Washington County Community Development Department plus electrical and plumbing permits, built to the 2021 IRC. Confirm that local zoning allows an ADU on the parcel and verify lot-size and setback rules with the county before designing. Apply through the Washington County online permit system at outpost.washco.utah.gov.
ADU Permit Costs: New Harmony vs. Nearby
| City | Estimated Fee |
|---|---|
| New Harmony | N/A |
| Salt Lake City | $500 – $5,000 |
| West Valley City | $500 – $5,000 |
| West Jordan | $500 – $5,000 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all New Harmony permit costs →
Zoning Considerations
ADU regulations vary dramatically by state and city. Many states (CA, OR, WA) have preemption laws that override local zoning restrictions. Check both state law and local zoning before designing.
Estimated Project Timeline
Here's a typical timeline for a adu project:
Timeline is based on the typical about 4 weeks permit processing time. Actual timelines vary by project complexity, completeness of application, and current department workload.
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Frequently Asked Questions
Contact the building department for current ADU permit fee information. Fees typically vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller ADU projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for ADU permits is about 4 weeks. More complex projects may take longer if plan review is required.
Learn More About ADU Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read ADU Guide →