First identify the controlling jurisdiction
A mailing address can say one city while the property is actually governed by another city or the county. Zoning authority controls the first layer of the answer.
Then identify the zoning district
ADU rules often vary by zone, lot type and whether the unit is internal, attached or detached. A general article can explain the process; the final answer must come from the current code for the parcel.
Physical feasibility is separate from legal permission
A code may allow an ADU while the lot remains difficult because of setbacks, slope, access, sewer, parking, fire access or building-code requirements.
Utilities can become the limiting factor
Confirm whether water, sewer/septic, power and gas can support the proposed unit and whether connection or impact fees apply.
Private restrictions still matter
HOA declarations and recorded covenants can create another layer of restrictions. Public zoning permission does not automatically override private agreements.
A practical ADU checklist
- Confirm parcel and jurisdiction.
- Confirm zoning district.
- Read the current ADU section of the code.
- Check setbacks, height and parking.
- Verify utility/service capacity.
- Review HOA/recorded restrictions.
- Confirm permitting path and fees.
FAQ
Does Utah law mean every property can have an ADU?
No. State law can shape local rules, but parcel-specific eligibility still requires local-code and property review.
Can I count future ADU rent when buying?
Only after legal feasibility, construction cost, lender treatment and realistic rent assumptions are verified.
Can an HOA restrict an ADU?
Recorded private restrictions may matter. Obtain qualified legal review when the issue is material.
Policy note: ADU rules change. Verify the current jurisdictional code and property-specific restrictions before relying on a general guide.
