Washington County · 11,546 residents
Ivins ADU rules
Ivins: internal ADUs allowed; detached ADUs allowed. Owner occupancy applies.
Internal ADU (inside the home)
Detached ADU (backyard building)
✓ Checked against city sources on September 24, 2026 See sources
Ivins ADU rules at a glance
| Rule | Internal ADU (basement, attic, inside the home) | Detached ADU (backyard building) |
|---|---|---|
| Allowed? | Allowed | Allowed |
| Minimum lot | Not yet verified — confirm with the city | The lot must meet the minimum lot size of its zone; state law effective Oct 1, 2026 also requires Ivins to allow a detached ADU on single-family lots of 11,000 sq ft or more. |
| Owner occupancy | The property owner (titleholder) must live in the main home, the internal unit or the detached unit as their permanent residence, and must show evidence of owner occupancy when applying. | The property owner (titleholder) must live in the main home, the internal unit or the detached unit as their permanent residence. |
| Parking | At least one additional off-street space beyond the home's required parking, separate from the main driveway; a second additional space if the unit is larger than 600 sq ft. | At least one additional off-street space beyond the home's required parking, separate from the main driveway; a second additional space if the ADU is larger than 600 sq ft. |
| Size limits | Not yet verified — confirm with the city | Between 400 and 1,000 sq ft, and covering no more than 30% of the rear yard. One detached ADU per lot; no ADUs on top of detached garages. |
| Height | Not yet verified — confirm with the city | One story only: up to 15 ft with a pitched roof or 13 ft with a flat roof, and never taller than the main home. |
| Setbacks | Not yet verified — confirm with the city | On lots under 20,000 sq ft, a detached ADU and its parking may be within 5 ft of the property line; otherwise the allowed height depends on the distance from the property line under the code's accessory building table. |
| Zones | Allowed only in medium-density and low-density single-family residential zones. | Allowed only in medium-density and low-density single-family residential zones. |
| Short-term rentals | Not yet verified — confirm with the city | Not allowed: detached ADUs may not be used as vacation rentals, short-term rentals or transient lodging and may only be rented long-term. |
| Permit process | The zoning administrator approves a Class II use application; no impact fees are charged for building an ADU. | The zoning administrator approves a Class II use application; no impact fees are charged for building an ADU. |
State law: detached ADUs from October 1, 2026
Ivins is a “specified municipality” under Utah S.B. 284. Beginning October 1, 2026, it must permit one detached ADU as a permitted use on a lot of 11,000 sq ft or more that has a detached single-family home. The city can still apply setbacks, height, design, owner-occupancy and limited parking rules, and it may allow detached ADUs on smaller lots. How the state ADU laws work.
How our property map screens Ivins lots
The map colors parcels using the rules on this page and the recorded lot size. A color is a planning screen, not a permit; Ivins makes the decision.
- No numeric external minimum is recorded for Ivins. The map keeps the statewide 11,000 sq ft external screen and shows the researched status (generally allowed) on the property report.
- "Likely" above 15,000 sq ft is this site's planning band for a large recorded lot. It is not a sentence in the Ivins code. Owner occupancy, parking, setbacks, zones, and HOA rules below still have to be checked.
Planned communities, PRDs and PUDs
Reviewed on September 22, 2026 against this city's research file, its published ADU page where one was found, and Utah meeting packets. No adopted sentence was confirmed that allows or bans an ADU in every PUD, PRD, PRUD, or planned community. If the assessor class or subdivision name says PUD, PRD, PRUD, planned unit development, planned residential development, planned community, resort community, or master planned community, the map keeps that lot highly unlikely regardless of size. A plat, CC&Rs, or development agreement can still prohibit an ADU where the zone allows one.
Sources
We link only to government sources and public meeting records. Codes change; confirm the current version with Ivins before you apply.
- Ivins City Planning Commission minutes, June 17, 2025 (Utah Public Notice)
Public hearing on amending Chapters 11 and 12 for ADUs (moderate-income housing plan); a lot may have one internal and one external ADU
- U.S. Census Bureau — Utah subcounty population estimates, Vintage 2025 (sub-est2025_49.csv)
July 1, 2025 population estimates for Utah cities and counties
- Utah S.B. 284 (2026) enrolled — Local Land Use Modifications
Enacts Utah Code 10-21-304 (detached ADUs on lots of 11,000 sq ft or more in specified municipalities, effective Oct 1, 2026) and the 'specified municipality' definition
- Utah Code Title 17, Chapter 60 (county classification, 17-60-104/105)
Current county class population thresholds: 3rd class 40,000-259,999; 4th class 12,000-39,999
- Official Ivins website
Common Ivins ADU questions
Can you build an ADU in Ivins?
Ivins: internal ADUs allowed; detached ADUs allowed. Owner occupancy applies. This is planning guidance, not a permit. Confirm the zone on your parcel with Ivins.
What lot size does Ivins require for an ADU?
Internal ADU: Not yet verified — confirm with the city. Detached ADU: The lot must meet the minimum lot size of its zone; state law effective Oct 1, 2026 also requires Ivins to allow a detached ADU on single-family lots of 11,000 sq ft or more.
Does Ivins require the owner to live on the property?
Internal ADU: The property owner (titleholder) must live in the main home, the internal unit or the detached unit as their permanent residence, and must show evidence of owner occupancy when applying. Detached ADU: The property owner (titleholder) must live in the main home, the internal unit or the detached unit as their permanent residence.
How much parking does a Ivins ADU need?
Internal ADU: At least one additional off-street space beyond the home's required parking, separate from the main driveway; a second additional space if the unit is larger than 600 sq ft. Detached ADU: At least one additional off-street space beyond the home's required parking, separate from the main driveway; a second additional space if the ADU is larger than 600 sq ft.
Can an ADU in Ivins be a short-term rental?
Internal ADU: Not yet verified — confirm with the city. Detached ADU: Not allowed: detached ADUs may not be used as vacation rentals, short-term rentals or transient lodging and may only be rented long-term.
What does it cost to build an ADU in Ivins?
Wasatch Front planning bands are often about $55,000–$145,000 for an internal suite, $70,000–$175,000 for a garage conversion, and $95,000–$250,000 or more for a new detached unit, before unusual site work. These are planning ranges, not bids.
Can an HOA block an ADU in Ivins?
City approval does not override CC&Rs or plat notes. Read the HOA documents and your subdivision plat before you design. A private restriction can stop a unit the city would otherwise allow.
Before you design: general checks for any Utah ADU
General planning advice, not Ivins code.
- Confirm the zoning district on the city zoning map. The county assessor’s “residential” class is not zoning.
- Read your HOA CC&Rs and subdivision plat notes; private restrictions can block a unit the city allows.
- Sketch existing and proposed parking. Driveway geometry and access often decide what fits.
- Ask early about sewer, water and electrical capacity; utilities can force a redesign.
- Expanding a building’s footprint usually triggers full setback and height rules.
Nearby city ADU rules
Want to know what fits on your Ivins lot?
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Utah ADU Builder provides educational planning guidance. This page is not legal advice and not a permit. Population: U.S. Census Bureau population estimate (2025). Editorial standards.