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Washington County, UT Accessory Structures: ADU Rental Restrictions (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

STR use
Prohibited unless licensed under § 10-13-23
Long-term rental condition
Recorded deed restriction required
License needed to rent
County business license, § 10-13-18.D.2.f
Rentable units per parcel
Only one dwelling may rent
Enforcing agency
Community Development Department

Summary

Washington County bars short-term rental use of either an accessory dwelling unit or its associated single-family home unless a Short Term Rental License is issued under § 10-13-23; renting one of the units long-term instead requires a recorded deed restriction.

City-specific rules exist: St. George has its own adu rental restrictions rules that differ from Washington County's county-level regulations. If you live in St. George, check the city-specific page instead.

Short term rentals not permitted. Neither the single family dwelling unit, nor the accessory dwelling unit, shall be used or licensed as a short term rental unless specifically permitted in accordance with section 10-13-23.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-17: Code current through: Ord. 2026-1329-O, passed 8-18-2026).

Full Breakdown

5 states plainly that "neither the single family dwelling unit, nor the accessory dwelling unit, shall be used or licensed as a short term rental" on an ADU parcel, unless the operator separately qualifies for and obtains a Short Term Rental License under § 10-13-23. That cross-reference matters because § 10-13-23's own owner-occupancy, density-limit, and size caps for STRs then apply on top of the ADU chapter's rules, closing off short-term rental as a routine option for ADU parcels. 3, the primary dwelling or the ADU may be rented long-term only if the owner first records a deed restriction, on a form the county accepts, against the property, acknowledging that the lot or parcel will remain owner-occupied.

4. f, and license renewal depends on the owner continuing to submit proof of continued compliance with these occupancy and restriction requirements. No more than one dwelling unit on an ADU parcel, whether the ADU or the primary home, may be rented at any time.

Violations & Fines

Noncompliance is enforced through the business license tied to the rental: § 10-13-18.E makes a failure to maintain the owner-occupancy and deed-restriction conditions "just cause" for the county to deny, decline to renew, or revoke the license that authorizes renting the unit, in addition to the zoning enforcement and penalty provisions the chapter otherwise incorporates.

Frequently Asked Questions

Can I short-term rent my Washington County ADU on Airbnb?
No, not by default. Washington County Code § 10-13-18.B.5 prohibits using or licensing either the ADU or its associated single-family dwelling as a short-term rental unless the property separately qualifies for and obtains a Short Term Rental License under § 10-13-23, with all of that section's owner-occupancy and size limits.
What paperwork does Washington County require to rent an ADU long-term?
Section 10-13-18.D.3 requires the owner to record a deed restriction, on a county-approved form, stating the property will remain owner-occupied, before either the ADU or the primary dwelling can be rented long-term. The owner must also hold a county business license under § 10-13-18.D.2.f.
Does the deed restriction on a Washington County ADU expire when I sell the property?
The code records the restriction "against the property" under § 10-13-18.D.3, meaning the owner-occupancy condition is tied to the land itself rather than the person who signed it, so it stays in effect through a change of ownership unless the county authorizes its removal.

Sources & Official References

Other rules in Washington County

All Washington County rules

Compare Washington County to another location·View the Utah accessory structures overview

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