Utah ADU Short-Term Rental Rules: Can You Airbnb an ADU?
In most Utah cities, no — you generally can’t run an ADU as an Airbnb or nightly rental. Utah’s ADU short-term-rental rules come down to two things that stack: state law defines an internal ADU as a 30-day-or-longer rental, and most cities separately ban short-term rentals in the residential zones where ADUs sit. This page is for homeowners weighing nightly income from a basement, garage, or backyard unit. The answer is city-specific, and a few cities have narrow exceptions — but the default across Utah’s major markets is no.
Last verified: July 2026. Rules change by city, zone, HOA, and legislative session. Confirm your specific property before you design, permit, or list anything.
What we verified for this page
- • Utah’s internal-ADU definition (Utah Code § 10-21-101) and the internal-ADU statute (§ 10-21-303 for cities / § 17-80-303 for counties)
- • Utah’s detached-ADU statute (§ 10-21-304, effective October 1, 2026) and the internal-ADU impact-fee rule (§ 11-36a-202)
- • Utah’s short-term-rental listing law (§ 10-8-85.4 for cities; § 17-50-338 for counties)
- • Utah Department of Commerce, Office of the Property Rights Ombudsman ADU guidance
- • Current short-term-rental and ADU rules for Salt Lake City, Provo, Draper, Lehi, Ogden, Park City, Moab, St. George, Saratoga Springs, Bountiful, and Hurricane
The short version
Two separate rules stack against short-term renting an ADU in Utah. You have to clear both, and in most cities you can’t.
| Your question | Practical answer | Why |
|---|---|---|
| Can I Airbnb an internal (basement) ADU? | Usually no | State law defines an internal ADU as a 30-day-plus rental, and cities can prohibit shorter stays. |
| Can I Airbnb a detached ADU or casita? | City-specific, usually no | The detached-ADU law is about building one. Cities can require detached ADUs be rented for 90+ days. |
| Isn’t a whole-home Airbnb different from an ADU Airbnb? | Yes | Some cities allow certain whole-home short-term rentals in specific zones but still restrict ADUs. |
| Does an Airbnb listing mean it’s legal? | No | Being able to post a listing is not the same as having zoning, ADU, license, and HOA approval to operate. |
| What should I do first? | Check feasibility | Confirm the legal path before you budget around nightly income. |
A short-term rental in Utah generally means renting a home — or part of one — for fewer than 30 consecutive days.
An ADU (accessory dwelling unit) is a second, smaller home on a single-family lot: a basement apartment, a unit over the garage, or a detached backyard cottage.
Not sure how the rules apply to your lot?
See what kind of ADU your property may support, and compare realistic long-term, family-housing, and estimate paths.
Check your Utah ADU feasibility →Can you use a Utah ADU as an Airbnb or short-term rental?
Sometimes, but for most Utah homeowners the answer is no. The safe starting assumption is that an ADU is a long-term housing tool — rented for 30 days or more — unless your city, zone, ADU type, permit, license, and HOA all specifically allow shorter stays.
Here’s why. Utah has become much more ADU-friendly in the last few years, and it’s easy to read “Utah now allows more ADUs” as “Utah now allows ADU Airbnbs.” They are not the same thing. Two independent rules decide the answer:
Rule 1: State law
Utah’s internal-ADU statute defines the unit around a rental of 30 consecutive days or longer, and it lets cities prohibit shorter-term rental of ADUs outright.
Rule 2: City zoning
Most cities separately ban short-term rentals in residential zones. Even if your ADU met every requirement, a nightly rental is usually not a permitted use on residential-zoned land.
You have to satisfy both. In the Utah cities we checked, the internal-ADU rule alone already limits most ADUs to 30-day-plus stays.
What is Utah’s 30-day rule for ADUs?
Utah’s internal-ADU law makes certain internal ADUs a permitted use in most residential zones — but it defines an “internal ADU” as a unit created inside an owner-occupied single-family home for the purpose of a long-term rental of 30 consecutive days or longer (Utah Code § 10-21-101). That 30-day floor is built into what an internal ADU legally is.
An internal ADU is a unit within the footprint of the main home — most often a basement apartment, but also space carved out inside the house or, in some cities, an attached-garage conversion. Under Utah Code § 10-21-303 (cities) and § 17-80-303 (counties), cities must allow one internal ADU in most residential zones, and they may not dictate things like its size relative to the main house or your lot’s total size. But the same statute lets cities impose specific conditions. Cities may require:
- •A rental license or permit
- •The property to be owner-occupied (the owner lives in the main home or the ADU)
- •One extra on-site parking space (and replacing garage parking if you convert the garage)
- •Prohibiting rental of the ADU for less than 30 consecutive days
- •Prohibiting internal ADUs on lots of 6,000 square feet or less, or in a limited share of residential zones
A note on fees: Utah law (§ 11-36a-202) prohibits impact fees — the one-time fees cities charge new construction to pay for roads, sewer, and services — on construction of an internal ADU within an existing primary dwelling. That’s a real savings, but it doesn’t make an internal ADU free of city fees: permit, license, inspection, and utility-connection charges can still apply.
Why “my city allows short-term rentals” doesn’t mean “I can Airbnb my ADU”
These are two different questions with two different answers. A city can allow some short-term rentals in specific commercial or resort zones while still requiring that ADUs be rented for 30 days or more. So “Airbnb is allowed somewhere in my city” tells you very little about your basement or backyard unit.
Most Utah cities only permit short-term rentals in named non-residential zones. Salt Lake City, for example, classifies any rental under 30 days as a short-term rental and allows it only in its Mixed-Use, Downtown, and Gateway zones — not in the residential zones where ADUs are permitted. Provo restricts short-term rentals to a short list of downtown and commercial zones and prohibits them in residential zones entirely. The pattern holds across Utah’s major markets, with a few narrow exceptions.
Utah ADU short-term rental rules, city by city
It depends on your city, but the pattern is remarkably consistent: across Utah’s major markets, short-term renting an ADU is generally not allowed, with a few narrow, city-specific exceptions. Find your city below, then confirm your exact parcel — zoning lines and ordinances change, and an HOA can be stricter than the city.
Screening tool only; not a permit, legal opinion, or substitute for property-specific verification. All rows verified against each city’s official sources, July 2026.
| City | Can an ADU be a short-term rental (under 30 days)? | Key detail | Official source |
|---|---|---|---|
| Salt Lake City | No in residential zones | Rentals under 30 days are treated as hotel/motel/bed-and-breakfast use and are allowed only in Mixed-Use, Downtown, and Gateway zones — not the residential zones where ADUs sit. ADUs may be rented long-term with owner-occupancy, a business license, and Good Landlord enrollment. | SLC Planning Division FAQ |
| Provo | No | Short-term rentals aren’t permitted in residential zones. Provo defines both internal and detached ADUs as 30-day-plus rentals, and requires owner-occupancy, a rental dwelling license, and a recorded deed restriction. | Provo City FAQ; Provo City Code 14.30 |
| Draper | No — ADU must be 30+ days | Both internal and detached ADUs must be rented for at least 30 consecutive days, and the main home must be owner-occupied. Draper does not currently have a separate short-term-rental ordinance. | City of Draper (ADU Permits) |
| Lehi | No | Lehi’s ADU FAQ states ADUs “are not allowed to be occupied as short-term rentals (terms less than 30 days),” and requires owner-occupancy. | Lehi City ADU FAQ |
| Ogden | Narrow yes — only if owner-occupied | A short-term rental “may not be housed within the accessory dwelling unit unless the primary single-family dwelling … is owner occupied,” and it needs an Ogden short-term-rental license in a zone that allows the use. | Ogden Municipal Code §§15-13-38, 15-13-39 |
| Bountiful | Narrow yes — but only inside an approved ADU | Bountiful flips the usual pattern: short-term rentals are allowed only within an approved ADU (internal or detached), never in a whole home, duplex, or multi-family unit. Requires an STR permit approved at a public meeting, owner-occupancy, one per lot, and neighbor notice. | Bountiful Municipal Code §§14-14-124, 14-14-127/128 |
| Hurricane | Narrow yes — one ADU per property | Hurricane allows one ADU per property to be used as a short-term rental (others must be long-term or a non-paying guesthouse). All STRs need a Hurricane STR business license, and single-family-zone licenses are capped and spaced 300 feet apart, with a waiting list. | Hurricane City Code §3-10-11; Hurricane land use ordinance |
| Park City | No | Park City prohibits nightly rentals in accessory apartments and requires longer rental terms; short-term rentals elsewhere require a Nightly Rental License and are limited to designated zones. Unincorporated Summit County sets its own rules — verify separately. | Park City Municipal Code (Title 4/15) |
| Moab | No | Moab’s ADU rules treat ADUs as long-term housing, prohibit nightly/short-term rental, and require a recorded deed restriction. | Moab Municipal Code (ADUs, Title 17) |
| St. George | No in residential zones | Rentals under 28 days are prohibited in single-family residential, mobile-home, and agricultural zones; short-term rentals are allowed only in commercial, approved resort-overlay, and qualifying planned-development zones. A narrow residential exception requires a lot over two acres plus written consent from neighbors within 300 feet. | St. George City Code (10-13B; 10-17A) |
| Saratoga Springs | No | The city’s ADU FAQ states an internal ADU “shall not be used as a Short-Term Rental and shall be rented only for a term of not less than 30 days.” (Saratoga Springs does not currently allow detached ADUs; that may change once Utah’s detached-ADU law takes effect October 1, 2026.) | Saratoga Springs (ADU FAQ; Land Development Code) |
Building or converting in one of these cities?
City rules, ADU type, owner-occupancy, parking, and utilities can all change the answer for your specific lot.
See what kind of ADU your property may support →When short-term renting an ADU might be possible in Utah
The honest answer isn’t a flat “never” — it’s “usually no, with narrow, verifiable exceptions.” If any of these describe your situation, it’s worth checking your specific city:
- A city that channels short-term rentals into approved ADUs. Bountiful is the clearest example: whole-home STRs are unlawful, but an approved ADU can be one, with a permit and owner-occupancy.
- An owner-occupied carve-out. Ogden allows an ADU STR only if the main home is owner-occupied and licensed; Hurricane allows one ADU per property as an STR with a license, subject to caps.
- The ADU sits in a zone that already allows short-term rentals. In resort and some commercial or overlay zones, nightly rental is a permitted use — but most ADUs aren’t in those zones.
- It’s not really an ADU question. Renting your whole home or a room short-term is governed by a different rule than renting an ADU, and may be allowed in certain zones with a license.
Every one of these still requires a permit or license, and every one turns on your exact address. None is a green light on its own.
But doesn’t Utah law protect my Airbnb listing?
Partly — and this is where a lot of people get burned. Utah law says a city can’t punish you solely for listing or advertising a short-term rental on a website like Airbnb or Vrbo. But that protects the listing, not the operation. A city can still prohibit actually running a short-term rental where it isn’t a permitted use, and it can enforce that with complaints, observed guest activity, and other evidence — not just the listing.
Under Utah Code § 10-8-85.4 (and § 17-50-338 for counties), a city or county may not enforce an ordinance that punishes someone only for the act of listing a short-term rental online. Homeowners sometimes read that as “Utah legalized my Airbnb.” It didn’t.
There’s also a specific twist for ADUs. When a city permits an internal ADU, it may record a notice on the property’s title stating the unit may only be used according to the city’s rules — so a future buyer knows the ADU can’t quietly become an Airbnb.
Does it matter if the ADU is internal, a garage conversion, or detached?
The ADU type changes the construction rules, and detached units even have their own rental-term rule — but no type gives you a right to short-term rent. Utah’s newest ADU law expands where you can build a detached unit, not how you can rent it. Here’s the quick breakdown:
Internal / basement ADU
Tied to the 30-day rule under state law. Long-term rental is the intended use.
Garage conversion
Usually treated like an internal ADU, and it often triggers a parking-replacement requirement — you may have to add off-street parking to replace the spaces you converted. That’s a feasibility and cost issue, not an Airbnb loophole.
Detached ADU or casita (backyard cottage)
Starting October 1, 2026, Utah’s detached-ADU law (Utah Code § 10-21-304) requires “specified municipalities” — generally larger cities — to permit a detached ADU on any lot of 11,000 square feet or larger with a single-family home. But the same law lets a city require owner-occupancy and prohibit renting a detached ADU for less than 90 consecutive days — an even longer minimum than the 30-day rule for internal units. It’s about whether you can build a detached ADU; it does not override a city’s short-term-rental ordinance. Because cities are still writing these rules, verify the specifics locally.
Do you need a license, and what taxes apply?
Where short-term rental is allowed, Utah cities typically require a local business or nightly-rental license, zoning verification, an inspection, and a local contact person. Taxes work differently depending on the length of stay — and that difference is one more reason long-term rental is simpler.
| Stay length | Tax treatment (Utah State Tax Commission, Pub. 56) |
|---|---|
| Fewer than 30 consecutive days | Generally subject to state and local sales tax plus transient room tax (lodging tax). Rates vary by city and county. |
| 30 consecutive days or more | Generally exempt from lodging taxes. Simpler compliance path and the minimum required for most Utah ADUs. |
Platforms like Airbnb and Vrbo may collect some taxes for you, but the compliance responsibility stays with the owner. State law also requires you to disclose your sales-and-use tax license on the listing. None of this changes the threshold question — whether nightly rental is even allowed at your property.
What happens if you short-term rent an ADU illegally?
The downside is real and specific. For an internal ADU, Utah law (§ 10-21-303) lets a city send a written notice of violation, give you a chance to cure it, and — if you don’t — record a lien against your property of up to $100 for each day of violation after the cure period ends. That’s separate from the title notice a city can record when it first permits an ADU. Where short-term rental isn’t allowed at all, cities also enforce their own zoning penalties, which can include daily fines.
When a Utah ADU still makes sense — even if you can’t Airbnb it
Often, an ADU is still a good project — just as a long-term rental, not a nightly one. A 30-day-plus lease is widely permitted in the cities above, can generate steady monthly income, houses aging parents or adult kids, and adds usable square footage without the licensing, tax, and enforcement risk that comes with short-term rental. The real question usually isn’t “can I Airbnb it,” it’s “does a compliant ADU actually pencil out on my specific lot?”
You want steady income.
A long-term rental ADU is the compliant, lower-risk path in most Utah cities. See our guide to ADU rental income by city. ADU rental income by city.
You need housing for family.
An internal or attached ADU can keep parents or adult kids close with independence — no rental question at all.
You want the lowest-risk version.
Owner-occupied, long-term, permitted, and licensed is the combination cities are actually set up to approve.
The project only works as an illegal Airbnb.
Then it may not be a smart project. That’s a genuinely useful thing to learn before you pay for plans.
Whether it works comes down to your lot, city, utilities, budget, and use case — the same factors that determine cost and timeline.
Request a Utah ADU feasibility review.
See what your property can realistically support, and what it might cost, before you request plans or builder quotes.
Request a Utah ADU feasibility review →How to check the rules for your specific property
Rules turn on your exact zoning, city, HOA covenants, and — for ADUs — any recorded deed restriction, and they change over time. Rather than assume, confirm the pieces that decide the answer:
- City and zoning district for your parcel
- ADU type: internal, attached, garage conversion, or detached
- Minimum rental term allowed (30 days for internal; up to 90 days for detached where required)
- Owner-occupancy requirement
- ADU permit or rental dwelling license required
- Short-term-rental license or overlay zone, if pursuing a narrow exception
- HOA / CC&Rs (an HOA can prohibit what the city allows)
- Parking requirement, especially for garage conversions
- Utilities and meters (some cities require separate connections for detached units)
- Building, fire, and egress requirements, including a separate entrance
- Recorded-notice or deed-restriction implications for resale
A quick way to read your odds before you spend anything:
| If your situation looks like… | Realistic read |
|---|---|
| 🟢 Likely worth pursuing | Your city has a clear ADU + short-term-rental path (or an exception like Bountiful/Ogden/Hurricane), the ADU type is allowed, owner-occupancy works, no HOA ban, and parking/license are clear. |
| 🟡 Proceed carefully | Rules are changing (especially detached ADUs under the 2026 law), HOA or planned-community rules are unclear, or owner-occupancy is uncertain. Verify before you design. |
| 🔴 Reconsider or pivot to long-term | Your city prohibits ADU short-term rental, your zone bans STRs, an HOA bans them, you can\u2019t meet owner-occupancy, or the numbers only work as an (illegal) nightly rental. |
Our feasibility check pulls these local factors together.
See which ADU paths realistically fit your lot — so you know your options before you commit.
Compare practical ADU options before you request quotes →Sources
State law
- Utah Code § 10-21-101 (definitions, including internal accessory dwelling unit) — le.utah.gov/xcode/Title10/Chapter21/
- Utah Code § 10-21-303 (internal ADUs — municipalities) and § 17-80-303 (counties) — le.utah.gov/xcode/Title10/Chapter21/
- Utah Code § 10-21-304 (detached ADUs; effective October 1, 2026) — le.utah.gov/xcode/Title10/Chapter21/
- Utah Code § 11-36a-202 (impact fees; internal ADU exemption) — le.utah.gov/xcode/Title11/Chapter36A/
- Utah Code § 10-8-85.4 (municipal short-term-rental listing) and § 17-50-338 (county) — le.utah.gov
- Utah Office of the Property Rights Ombudsman — Accessory Dwellings — propertyrights.utah.gov/find-the-law/legal-topics/adu/
- Utah State Tax Commission, Publication 56 (sales tax and transient room tax on lodging) — tax.utah.gov/forms-pubs/pub-56/
City
- Salt Lake City Planning Division — Frequently Asked Questions (short-term rentals; ADUs): slc.gov/planning/frequently-asked-questions/
- Provo City — Accessory Dwelling Units and short-term rental FAQ (Provo City Code 14.30, 6.26): provo.gov/1367/Accessory-Dwelling-Units
- City of Draper — Accessory Dwelling Units Permits: draperutah.gov/business-development/planning-and-development/accessory-dwelling-units-permits/
- Lehi City — Accessory Dwelling Units FAQ: lehi-ut.gov
- Ogden Municipal Code §§15-13-38 and 15-13-39 (short-term rentals; ADUs): codelibrary.amlegal.com/codes/ogdencityut
- Bountiful Municipal Code §§14-14-124 and 14-14-127/128 (ADUs; short-term rentals): bountifulutah.gov
- Hurricane City Code §3-10-11 (short-term vacation rentals) and Hurricane land use ordinance (ADUs): cityofhurricane.com
- Park City Municipal Code (accessory apartments; nightly rentals): parkcity.org
- Moab Municipal Code (accessory dwelling units, Title 17): moab.municipal.codes
- St. George City Code (short-term residential rentals, 10-13B; ADU standards, 10-17A): stgeorge.municipal.codes
- Saratoga Springs — FAQs for Accessory Units and Renting; Land Development Code: saratogasprings-ut.gov/1008/FAQs-for-Accessory-Units-Renting
This page is general information, not legal, tax, financial, or engineering advice. Utah ADU and short-term-rental rules change by city, zone, HOA, and legislative session. Confirm the current statute and your city’s ordinance for your specific parcel before you build, permit, or list.
Utah ADU short-term rental FAQ
Utah ADU Builders helps Utah homeowners understand local ADU rules, likely costs, and practical build paths before requesting estimates. We are not a city, HOA, law firm, or licensed contractor, and nothing here is legal advice.