Does Utah require owner occupancy for every ADU?

There's no single simple rule for every ADU. Utah's internal-ADU protection is built around an owner-occupied home, and every city we reviewed requires the owner (or a qualifying owner-occupant) to live in one of the units. Detached ADUs are governed by a separate framework and by each city's ordinance.

Can a Utah city require owner occupancy for an internal ADU?

Yes. State law makes a qualifying internal ADU a permitted use, but that protection applies to an owner-occupied home, and cities may add rental-permit, licensing, and occupancy requirements. Utah courts have upheld owner-occupancy conditions.

Can I rent both the house and the ADU in Utah?

Usually not where owner occupancy applies. West Jordan, for example, states you must live in one unit and rent the other, or rent both to the same person — you can't rent them separately to different tenants. Confirm the rule for your city.

Can I live in the ADU and rent the main house?

In many cities, yes — owner occupancy can be satisfied in either unit (Ogden and Salt Lake City both allow this). But some cities word the rule around the main dwelling, so verify before you plan around it.

Are Utah ADUs allowed as Airbnb or short-term rentals?

It's city-specific and often restricted. Internal-ADU rules generally require rentals of 30-plus days, and for a detached ADU a city may prohibit rentals shorter than 90 consecutive days. Where short-term rental is allowed, it's frequently tied to the home being owner-occupied.

Does a family member count as owner occupancy?

It depends on the city. Salt Lake City's definition includes certain relatives of a deed owner and a family-trust trustor, but that definition shouldn't be assumed statewide.

What if I leave temporarily for military, medical, work, or religious service?

Several reviewed jurisdictions allow limited temporary absences, but the length and documentation vary. Examples include up to three years in Salt Lake City and Provo, up to two years in unincorporated Salt Lake County, and defined temporary-absence treatment in Saratoga Springs.

What happens to the ADU when the property sells?

Verify your city's rule. Many cities record a covenant, affidavit, or notice that follows the property, and some — like Ogden — void the ADU permit on a change of ownership, requiring the new owner to reapply.

Can an HOA stop my Utah ADU?

Internal and detached units are treated differently. An HOA generally can't prohibit renting a compliant internal ADU, but it may be able to restrict a detached ADU — so read your CC&Rs before you plan a detached unit.

Utah ADU Owner Occupancy Requirements: Do You Have to Live on the Property?

Q: Do detached ADUs have owner-occupancy requirements in Utah?

They can. Even with the new state law (§10-21-304, effective October 1, 2026), a city may require the owner to live in either the main detached home or the detached ADU on the lot — and several cities already do, including Draper and Ogden.

Utah ADU owner occupancy requirements usually come down to one rule: in most Utah cities, if you add an accessory dwelling unit (ADU) — a second, self-contained home on a single-family lot — you (or, in some cities, a family member) must live in either the main house or the ADU as your primary residence. You generally cannot rent both units as a pure investment. This answer fits homeowners and “house-hack” owners who plan to live on-site; it’s a poor fit for absentee investors. The exact rule, the exceptions, and how it’s enforced vary by city — and detached-ADU rules are changing statewide in 2026.

Who this is from: Utah ADU Builders is a Utah-focused ADU planning, feasibility, and builder-matching resource — not a city, permit office, law firm, lender, architect, engineer, or contractor. We may earn compensation when homeowners request a feasibility review or get connected with local professionals. That compensation does not control the rules, risks, or feasibility factors explained on this page.

Last verified: July 2026. ADU statutes and city ordinances change; see How we checked this and Sources below.

What we verified: Utah’s internal-ADU statute (Utah Code §10-21-303), the detached-ADU statute enacted by SB 284 (§10-21-304, effective Oct 1, 2026, including its 11,000-square-foot threshold and rental rules), guidance from the Utah Office of the Property Rights Ombudsman, and the current ADU ordinances or official pages for Salt Lake City, Ogden, Provo, Draper, West Jordan, Millcreek, Saratoga Springs, and unincorporated Salt Lake County.

The short answer, by question

Your question	Bottom line
Is there one simple statewide owner-occupancy rule for every ADU?	No. Internal ADUs and detached ADUs are treated differently, and city rules matter.
Are internal ADUs tied to owner occupancy?	Yes, in practice. Utah’s internal-ADU protection is built around an owner-occupied home, and the cities we reviewed require the owner to live on-site.
Can a city require the owner to live on the property?	Yes. Every Utah city we reviewed requires it. The wording varies — some let you live in either the main home or the ADU; others require the main home to be owner-occupied.
Can I rent both the house and the ADU separately while living elsewhere?	Usually no where owner occupancy applies. West Jordan, for example, says you may not rent the two units separately.
Are detached ADUs different?	Yes. A new state law (§10-21-304) takes effect October 1, 2026, but it still lets cities require the owner to live on the lot.
What should I check next?	Your city, ADU type, rental plan, HOA, recorded notices/affidavits, parking, utilities, and whether you’ll live on-site.

Not sure how your city or your exact lot fits? That’s the one thing a general article can’t tell you.

Check ADU feasibility for your property

What “owner occupancy” means for a Utah ADU

Owner occupancy means the property owner — and in some cities a defined family member or family-trust owner — must live on the property as their primary residence while the ADU is in use. It is not enough to own the property; you generally have to live in one of the two units. The exact wording differs by city, so it’s a mistake to assume every Utah city defines it the same way.

Key terms, defined plainly

ADU (accessory dwelling unit):: A complete, separate living space — its own kitchen, bathroom, and entrance — on the same lot as a single-family home.
Internal ADU:: An ADU created inside the existing home’s footprint, such as a basement apartment or a converted lower level.
Attached ADU:: A new unit added onto the main home (an addition that shares a wall).
Detached ADU:: A separate building on the lot — a backyard cottage, a casita, or a converted or newly built structure.
Owner of record:: The person named on the recorded deed as owning the property.
Short-term rental (STR):: A rental of fewer than 30 consecutive days (think nightly stays on platforms like Airbnb or Vrbo).
Deed restriction / restrictive covenant:: A legal condition recorded against the property that future owners inherit.
Impact fee:: A one-time fee some cities charge new construction to help pay for roads, water, sewer, and parks.

Does the owner have to live in the main house, or can they live in the ADU?

It depends on the city. Many Utah cities let owner occupancy be satisfied by living in either unit — the main home or the ADU. Ogden, for example, lets the owner occupy either the main dwelling or the ADU as their permanent, principal residence. Some cities word their rule around the main dwelling being owner-occupied, so don’t assume you can move into the ADU and rent the house everywhere.

Does a family member count?

Sometimes. Salt Lake City is the clearest example: its code counts an “owner occupant” as someone listed on the recorded deed, a person related to a deed owner by blood, marriage, or adoption, or the trustor of a family trust that holds title. That is generous — but it is a Salt Lake City rule, not a statewide one. Confirm your city’s definition before you build around it.

What Utah state law actually says about internal ADU owner occupancy

Utah gives internal ADUs strong protection, but that protection is built around an owner-occupied home. Under Utah Code §10-21-303 (for cities) and §17-80-303 (for counties), one internal ADU is a permitted use in areas zoned primarily for residential use — meaning no special hearing or conditional-use approval is required for a qualifying unit. The catch is in the definition: the law’s protection applies to an internal unit created inside a detached single-family home occupied as the primary residence of the owner of record.

In other words, the statewide protection assumes you live there. On top of that, Utah cities commonly require owner occupancy for ADUs through their own ordinances — every city we reviewed for this page does — and Utah courts have upheld owner-occupancy conditions (see Anderson v. Provo City, 2005 UT 5). Either way, the practical result is the same: in most of Utah, plan to live on-site, and confirm your city’s rule.

Note on the old citation: This law used to sit at Utah Code §10-9a-530. Utah renumbered its land-use code in a 2025 special session, effective November 6, 2025, so the current section is §10-21-303. The substance carried over.

What your city can still control

Even for a protected internal ADU, state law lets a city:

Apply building, health, and fire codes (egress windows, ceiling height, fire separation, a separate entrance).
Require an additional off-street parking space, and require replacing garage parking that gets converted.
Require a permit or license to rent the unit.
Prohibit short-term (under-30-day) rental of the ADU.
Prohibit internal ADUs in a limited slice of the city — up to about 25% of the area zoned primarily for residential use (up to about 67% for cities with a university of 10,000-plus students).
Prohibit an internal ADU on a lot smaller than 6,000 square feet.
Record a notice tying the ADU to the property’s land-use rules.

Two facts that often surprise homeowners:

1. Building an internal ADU is exempt from impact fees under state law — a real cost savings compared to a detached unit.

2. Your HOA generally cannot prohibit you from renting a compliant internal ADU that meets local rules and safety codes. Detached units are different — see below.

City-by-city owner-occupancy snapshot

The state answer is not enough on its own. In the Utah cities and the county we reviewed, an owner-occupancy requirement is common — but the details differ: who counts as the owner, whether you can be temporarily absent, whether an affidavit or covenant is recorded, and how rentals are handled. The table below reflects each place’s current ADU ordinance or official ADU page.

City / area	Owner-occupancy rule (verified July 2026)	How it’s recorded / key exception	Source
Salt Lake City	Owner must live on the property (main home or ADU). "Owner occupant" can be a deed owner, a family member related by blood/marriage/adoption to a deed owner, or a family-trust trustor. Not required where the property's principal use is a duplex, multifamily, or non-residential.	Recorded restrictive covenant; ADU can’t be a short-term rental. Temporary absence up to 3 years (military, job, sabbatical, service) and certain medical-care situations.	SLC Code 21A.40.200
Ogden	Owner (titleholder) must occupy the main home or the ADU as their permanent, principal residence to qualify for an ADU.	Change of ownership voids the ADU permit — a new owner must reapply. A “seasonal residence” of up to 4 months/year is allowed, but you can’t rent the vacant main home during that time.	Ogden Code 15-13-39
Provo	Owner occupancy required; the dwelling must be your primary residence at application and at every rental-license renewal.	Recorded deed restriction that runs with the land; annual rental-license renewal. Temporary absence up to 3 years if you lived there at least 1 year first.	Provo Code 14.30.030
Draper	The primary dwelling must be owner-occupied for both internal and detached ADUs. One ADU per lot; long-term (30-plus-day) rental.	Check Draper’s interactive map to confirm your lot qualifies.	Draper ADU page
West Jordan	You must live in one building (main or ADU) and rent the other, or rent both to the same person. You cannot rent the two units separately to different tenants.	A business license is required to rent. (Confirm current lot-size and garage-conversion details with the city, which has updated its ADU ordinance.)	West Jordan ADU guidance
Millcreek	You can rent an ADU as long as you live on the property and obtain the required approvals.	City records a title notice that ADU eligibility depends on owner occupancy.	Millcreek ADU page
Saratoga Springs	For internal ADUs, the owner — someone with at least 50% ownership — must occupy one of the units.	During a qualifying temporary absence, you may rent the whole home to one household, or rent one unit and leave the other vacant. Some areas are mapped as “internal-ADU prohibited.”	Saratoga Springs FAQ
Salt Lake County (unincorporated)	The main home or the ADU must be owner-occupied.	Record an owner-occupancy affidavit and get a business license before renting. Short exceptions up to 2 years for military deployment, medical care, or a religious mission.	Salt Lake County ADU page

Each row was verified against the linked official source in July 2026. City rules change, and where an older explainer page and a newer adopted ordinance disagree, the current adopted code controls — so confirm the current requirements for your parcel.

Don’t see your city? Rules vary by community and change often, and the wording matters more than most homeowners expect. The reliable way to know is to check your specific parcel.

See what kind of ADU your property may support

Can you rent both the main house and the ADU in Utah?

Often the answer is no — and that’s the whole reason this page exists. If your city requires owner occupancy, the classic investor plan (rent the main house to one tenant, rent the ADU to another, and live somewhere else) usually isn’t allowed under a standard ADU approval. Here’s how the common plans tend to shake out in owner-occupancy cities:

Your plan	Typical result where owner occupancy applies
Live in the main home, rent the ADU long-term	Usually the cleanest path — if the ADU is permitted and licensed.
Live in the ADU, rent the main home	Allowed in cities that let owner occupancy be in either unit (e.g., Ogden, Salt Lake City). Confirm your city’s wording.
Rent both units to different tenants and live elsewhere	Usually not allowed. West Jordan states you cannot rent the two units separately.
Rent both units to the same household	Allowed in some places — West Jordan permits renting both to the same person — but not a universal Utah rule.
Use the ADU as a short-term rental (Airbnb/Vrbo)	Often restricted. Many cities allow it only if the home is owner-occupied, and internal-ADU rules generally require 30-plus-day rentals.
Bought a home with an existing basement apartment	Don’t assume it’s legal or that the rental right transfers. Verify permit status, any recorded notice/affidavit, and whether you must reapply.

Here’s the honest part: an ADU is not automatically a smart project just because Utah has become more ADU-friendly. If your entire plan depends on renting both units while living somewhere else, that plan will not work under a standard ADU approval in most Utah cities. The right project depends on your lot, your city, utilities, budget, and how you actually plan to use the space. A feasibility review checks exactly that before you spend money on design or quotes. For income projections once you know the ADU is feasible, see our Utah ADU rental income by city guide.

Internal vs. detached ADU owner-occupancy rules (2026 update)

Internal and detached ADUs are not the same legal product, and detached rules changed in 2026. An internal ADU (inside the home’s footprint — a basement apartment or converted level) has the strongest state protection. An attached ADU (an addition that shares a wall) is largely up to your city. A detached ADU (a separate building — a backyard cottage, casita, or converted structure) was historically left almost entirely to each city — until a new state law.

What changed: SB 284 and §10-21-304 (effective October 1, 2026)

By October 1, 2026, “specified municipalities” — generally Utah’s larger cities (first- through fourth-class cities, plus fifth-class cities of at least 5,000 people in the more populous counties), not small towns — must have a land-use regulation that permits a detached ADU on any lot of 11,000 square feet or larger that has a single-family home. Cities may also choose to allow detached ADUs on smaller lots.

What it does NOT do — erase owner occupancy

The new law sets a floor, and it expressly lets a city require the owner to live in either the main detached home or the detached ADU on the lot. It also lets cities set size, height, setback, design, and parking rules, require replacement parking when a detached garage is converted, limit a lot to one ADU, and — importantly for rentals — prohibit renting a detached ADU for fewer than 90 consecutive days. That 90-day figure is specific to detached ADUs; internal-ADU rules generally use a 30-day threshold, so don’t assume the only rental-duration limit is the 30-day one. Cities like Draper and Ogden already require owner occupancy for detached units. Because cities are adopting or updating these ordinances through 2026, confirm your city’s current detached-ADU rule before you rely on it.

One more difference: while an HOA generally can’t block renting a compliant internal ADU, an HOA may be able to restrict or prohibit a detached ADU. If you’re in an HOA, read your CC&Rs (an HOA’s recorded covenants, conditions, and restrictions) early.

Thinking about a detached or prefab unit? Feasibility still comes first — lot size, owner occupancy, setbacks, utilities, and city approval. Our detached ADU builders guide and prefab ADU Utah guide cover build options and any partner relationships we may have.

What happens when you sell or buy a Utah home with an ADU

An ADU that’s legal for one owner may not be legal for the next one the same way. Many cities record a document tying the ADU to owner occupancy — a restrictive covenant (Salt Lake City), a deed restriction that runs with the land (Provo), a recorded affidavit (unincorporated Salt Lake County), or a title notice (Millcreek). Those follow the property, so a buyer typically inherits the owner-occupancy obligation if they keep the ADU.

Some cities go further. In Ogden, the ADU permit is valid only while the owner who obtained it owns and occupies the property — a change of ownership voids the permit, and the new owner must reapply if they want an ADU. The lesson for buyers, sellers, and agents is simple: “this home has an ADU” is not the same as “you can legally rent it the way the last owner did.”

Buyer due-diligence checklist

Before you count on ADU rental income from a home you’re buying, confirm:

Is the ADU permitted, and is there a certificate or land-use permit on file?
Is there a recorded notice, affidavit, or covenant tied to the ADU?
Does the city require the owner to live on-site — and can that be in either unit or only the main home?
Is the ADU licensed for rental, and is annual renewal required?
Are short-term rentals prohibited?
Will you live on the property?
Does the permit survive a change of ownership, or must you reapply?
Is there an HOA?
Are parking, utilities, egress, and safety-code items documented?

Owner-occupancy red flags to resolve before you request quotes

Some situations turn a “great idea” into an expensive dead end. Treat these as reasons to check feasibility first:

You want to rent both units separately while living elsewhere.
You want to buy purely as an absentee investor rental.
The home is in an HOA and you’re considering a detached unit.
The existing basement apartment was never permitted.
Your city requires a recorded affidavit or covenant and you don’t plan to live there.
You’re counting on nightly (short-term) rental income.
A garage conversion leaves you short on required parking.
Utility or sewer capacity for a second unit is unknown.
Your city’s detached-ADU rules are still being written for the 2026 law.
You’re relying on a real estate listing description instead of the city’s approval documents.

Utah ADU owner-occupancy feasibility check (run this yourself)

Use this quick framework to see which lane you’re in before spending on plans or quotes. Answer in order:

1
Is the property in a city or in an unincorporated county?
Rules and even the definitions differ.
2
Is the ADU internal, attached, or detached?
Internal has the strongest state protection; detached depends heavily on your city.
3
Will you live on the property?
If no, you’re in a high-risk lane in most Utah cities.
4
If yes, which unit will you live in?
Some cities require the main home specifically.
5
Long-term or short-term rental?
Short-term is often restricted or tied to owner occupancy.
6
Is the property in an HOA?
This matters most for detached units.
7
Is the ADU new, existing, or unpermitted?
An existing unit is not automatically a legal one.
8
Is there already a recorded covenant, affidavit, or notice?
It may set conditions you’ll inherit.

Reading your result:

If you plan to live on-site, rent long-term, and build or keep a permitted unit, you’re likely in a workable lane. If you don’t want to live on the property, or you want to rent both units to different tenants, pause before you spend — that’s exactly the scenario that fails most often.

Request a Utah ADU feasibility review before you request builder quotes

How we checked this

Because this topic affects money, rental legality, permits, and resale, we prioritize primary and official sources over generic summaries. When sources disagree, we rely on the current adopted code or signed ordinance over older explainer pages, and we date every check. For this page we reviewed:

Utah Code §10-21-303 (internal ADUs, municipalities) and §17-80-303 (counties).
Utah Code §10-21-304 (detached ADUs), enacted by SB 284, effective October 1, 2026 — including the 11,000-square-foot threshold, the option for cities to require owner occupancy on the lot, and the option to prohibit rentals shorter than 90 consecutive days.
Utah Code §10-21-101 (definitions of ADU, internal ADU, detached ADU, primary dwelling, and “specified municipality”).
Guidance from the Utah Office of the Property Rights Ombudsman.
Current ADU ordinances or official ADU pages for Salt Lake City, Ogden, Provo, Draper, West Jordan, Millcreek, Saratoga Springs, and unincorporated Salt Lake County.

What this page does not verify for your specific property: your parcel’s zoning, your HOA documents, an existing ADU’s permit status, whether a prior owner stayed compliant, final building-code compliance, utility or sewer capacity, or whether a city has amended its ordinance since our last verification date. Those are property-specific checks, which is what a feasibility review is for. This page is general information about Utah ADU rules — it isn’t legal, tax, financing, or engineering advice, and no article can guarantee permit approval, rental income, or property-value results.

Utah ADU Laws (2026)

Full breakdown of state law, SB 284, and city authority.

Utah ADU Rules by City

City-by-city comparison: internal, detached, STR, and permits.

Utah ADU Rental Income by City

Market rent ranges and income scenarios by city.

Can I Build an ADU in Utah?

Lot-level feasibility: zones, setbacks, utilities, and permits.

Detached ADU Builders Utah

Backyard cottage options, costs, and how to vet builders.

Salt Lake County ADU Guide

Rules and lot requirements for unincorporated county residents.

Frequently asked questions

Sources

Official and primary sources reviewed for this page (July 2026):

•Utah Code §10-21-303 — Internal accessory dwelling units (municipalities) — le.utah.gov/xcode/Title10/Chapter21/10-21-S303.html
•Utah Code §10-21-304 — Detached accessory dwelling units (effective Oct 1, 2026; enacted by SB 284) — le.utah.gov/Session/2026/bills/enrolled/SB0284.pdf
•Utah Code §10-21-101 — Definitions (municipal land use) — le.utah.gov/xcode/Title10/Chapter21/10-21-S101.html
•Utah Code §17-80-303 — Internal accessory dwelling units (counties) — le.utah.gov/xcode/Title17/Chapter80/17-80-S303.html
•Utah Office of the Property Rights Ombudsman — Accessory Dwellings — propertyrights.utah.gov/find-the-law/legal-topics/adu/
•Anderson v. Provo City Corp., 2005 UT 5 (owner-occupancy conditions upheld) — law.justia.com/cases/utah/supreme-court/2005/anders012105.ht…
•Salt Lake City Code 21A.40.200 — Accessory Dwelling Units — codelibrary.amlegal.com/codes/saltlakecityut/latest/saltlake…
•Ogden City Code 15-13-39 — Standards for Accessory Dwelling Units — codelibrary.amlegal.com/codes/ogdencityut/latest/ogdencity_u…
•Provo City — Accessory Dwelling Units (Code 14.30.030) — provo.municipal.codes/Code/14.30.030
•Draper City — Accessory Dwelling Unit Permits — www.draperutah.gov/business-development/planning-and-develop…
•West Jordan City — Adding a Rental Unit to Your Property — www.westjordan.utah.gov/newsroom/2025/09/adding-a-rental-uni…
•Millcreek — Accessory Dwelling Units — www.millcreekut.gov/341/Accessory-Dwelling-Units-ADUs
•Saratoga Springs — FAQs for Accessory Units and Renting — www.saratogasprings-ut.gov/1008/FAQs-for-Accessory-Units-Ren…
•Salt Lake County — Accessory Dwelling Units — www.saltlakecounty.gov/regional-development/planning-transpo…

City ordinances and state rules change. We re-verify the statutes and the featured cities on a recurring basis and update the “Last verified” date accordingly.