Updated 2026-08-31
Can you legally rent your basement in Utah County?
Statewide, yes — a unit inside your own home has been permitted since 2021. The part nobody tells you is that your city still decides owner occupancy, registration, parking and sometimes a minimum lot size, and those are what stop projects. Below is what each of the nine cities we serve actually requires, what we could verify, and what we couldn't.
The state law
What's true everywhere in Utah
This is the settled part. It hasn't moved in five years, which is a large part of why a basement unit is the lower-risk thing to build.
- A unit inside your existing home — the basement apartment — has been a permitted use across Utah since 2021, in areas zoned for single-family homes. It doesn't go to a public hearing and a neighbor can't object it out of existence.
- Cities keep real authority over the details, and this is where projects actually get caught: owner occupancy, registration, parking minimums, and in some cities a lot-size floor or an outright exclusion for certain streets.
- Nearly every city in this corridor requires you to live in one of the two units. That single rule is what rules out buying a house purely to rent both halves.
- Registration is frequently a separate step from the building permit. The construction can pass every inspection while the unit still isn't legally registered to rent — which is the most common way a well-built unit ends up unrentable.
Thinking about a detached unit instead?
That's a different law and a much less settled one. Utah now forces cities to permit a detached unit on lots of 11,000 square feet or more, with ordinances due October 1, 2026 — and several cities here are still writing theirs. Detached ADU rules, city by city →
All nine at a glance
What each city requires
The state says you may. These are the conditions attached to it locally — and the answer for your address can differ from the answer for your street, because several cities exclude specific lot sizes or mapped areas.
| City | What it takes to rent a unit inside the house |
|---|---|
| Orem | Allowed inside the main house only, and you have to live in one of the two units. |
| Vineyard | Must be inside the home, on a lot of 5,200 sq ft or more, with five parking spaces on site. |
| Lindon | Owner-occupied only, and banned outright on small lots and in mapped parts of the city. |
| Pleasant Grove | Allowed in the basement, over the garage, or in an addition — with a signed owner-occupancy affidavit. |
| American Fork | Owner has to live on site, and the lot needs four off-street parking spaces in total. |
| Cedar Hills | Allowed in every residential zone — but the registration dies when the house sells. |
| Highland | A unit inside the home is the settled path here while the detached rules are being rewritten. |
| Alpine | We could not verify Alpine's local requirements. The state statute applies; the local details need a call. |
| Lehi | Permitted on lots of 6,000 sq ft or more, with owner occupancy recorded against the property. |
Orem
An Orem accessory apartment has to be inside the main residential building, and the owner has to live in one of the two units — either the house or the apartment. That owner-occupancy rule is the one that most often decides whether a purchase pencils out, because it rules out buying a house purely to rent both halves.
The part that catches people
Orem publishes a list of every legally approved accessory apartment in the city, by address and tax ID. If you're buying a house advertised as having a basement apartment, that list settles in about a minute whether the unit is legal or whether you're inheriting somebody's unpermitted project.
Checked against the sources below on 2026-08-31. Confirm with Orem before you commit money to a plan.
Vineyard
Vineyard allows an accessory dwelling unit within the home if the lot is at least 5,200 square feet and the unit meets building and fire code. A home with an ADU has to provide five onsite parking spaces on a paved surface or approved driveway, which is more than people expect and occasionally the binding constraint on a narrow lot.
The part that catches people
Vineyard runs ADU authorization through business licensing rather than purely as a building matter, and the license is renewed every two years with a fee and a code enforcement inspection. It's a separate track from the basement finish permit, it doesn't start itself, and it's worth opening early rather than at the end.
Checked against the sources below on 2026-08-31. Confirm with Vineyard before you commit money to a plan.
Lindon
Lindon allows one accessory apartment per owner-occupied single-family home. Two limits catch people: lots of 6,000 square feet or less are excluded outright, and so are areas shown on the Lindon City Accessory Apartment Map — so this is a question about your specific address, not about Lindon generally. Homes approved as part of an R2 overlay project are also excluded.
The part that catches people
Lindon wants a site plan drawn to scale showing property lines and dimensions, existing buildings and their entrances, anything proposed, the distances to the property lines, and where the parking stalls go. That's a real drawing, not a sketch, and it's part of what we produce rather than something handed back to you.
Checked against the sources below on 2026-08-31. Confirm with Lindon before you commit money to a plan.
Pleasant Grove
Pleasant Grove allows an accessory apartment in the basement, over the garage, or in an addition, in the A-1, R-R, R-1, RM-7, DV and Grove mixed housing zones. The home has to stay owner occupied, backed by a signed owner's affidavit, and only one accessory apartment is allowed per dwelling.
The part that catches people
Registration is a separate step from the building permit — an Accessory Apartment Registration form with a $25 fee. It's the step most often missed, and missing it is a strange kind of failure: the construction passes every inspection and the unit still isn't legally registered to rent.
Checked against the sources below on 2026-08-31. Confirm with Pleasant Grove before you commit money to a plan.
American Fork
American Fork requires the owner to live in either the house or the accessory apartment — defined as full-time residency by the actual property owner. Parking is the item that surprises people: two off-street spaces for the accessory apartment on top of the two required for the house, so four spaces on the lot.
The part that catches people
The zoning approval and the building permit are two separate approvals in American Fork, and passing one tells you nothing about the other. We confirm what the parcel allows before scoping the unit, because the expensive version of this mistake is finding out after the drywall is up.
Checked against the sources below on 2026-08-31. Confirm with American Fork before you commit money to a plan.
Cedar Hills
Cedar Hills permits accessory dwelling units in all residential zones unless the code prohibits them somewhere specific. The unit can be rented but cannot be sold or split off by deed — it stays part of the single-family property permanently.
The part that catches people
The accessory apartment registration permit becomes void the moment the house is sold, and the buyer has to apply for a new one. Two consequences: if you're buying a Cedar Hills home with an apartment, the legal unit does not simply come with it, and if you're selling one, a buyer who's counting on that rental income needs to know this before closing rather than after.
Checked against the sources below on 2026-08-31. Confirm with Cedar Hills before you commit money to a plan.
Highland
A unit inside the home remains the settled path in Highland while the detached rules are rewritten, and Highland basements are large enough that an internal unit rarely feels like a compromise. Utah's internal accessory dwelling unit statute applies here as it does statewide; the local requirements around owner occupancy, registration and parking are what we'd confirm for your address.
Checked against the sources below on 2026-08-31. Confirm with Highland before you commit money to a plan.
Alpine
Utah's internal accessory dwelling unit statute applies in Alpine as it does everywhere in the state, so a unit inside an existing single-family home is a permitted use in single-family zones. We could not verify Alpine's local requirements around owner occupancy, registration and parking from a primary source, and we'd rather say that than guess — those are what we'd confirm for your address.
Checked against the sources below on 2026-08-31. Confirm with Alpine before you commit money to a plan.
Lehi
A unit inside the home is permitted on lots of 6,000 square feet or more, down from 8,000. The owner has to occupy one of the two structures, recorded as an affidavit against the property. Short-term rentals under 30 days are not allowed in a Lehi ADU.
The part that catches people
Lehi has applied moratoriums on new ADU permits in specific neighborhoods where sewer capacity is constrained. It's the one thing on this page that can make a fully qualifying lot a no, and it's decided by which part of the city you're in — so it's the first thing we check for a Lehi address.
Checked against the sources below on 2026-08-31. Confirm with Lehi before you commit money to a plan.
How to use this page
The permit is the easy half
Most basement apartments that end up unrentable weren't stopped by construction. They were stopped by a registration nobody filed, an owner-occupancy rule nobody read, or a parking count that the driveway couldn't meet. Those are all knowable before a single wall goes up, which is why we check them first rather than at the end.
This page is research, not legal advice, and it's a snapshot. Every claim here links to the source it came from so you can check it yourself, and where we couldn't verify something we said so instead of filling the gap. Your city's planning department is the final word.
If you want the short version for your specific house — lot size, zone, current ordinance, and whether a legal unit is even on the table — that's a few minutes of lookup and we don't charge for it.
For what the work involves and what it costs, see basement apartments, or read the basement versus detached comparison.
Renting a basement in Utah — common questions
- Is it legal to rent out my basement in Utah?
- Yes, in principle. A unit inside your existing home has been a permitted use statewide since 2021 in areas zoned for single-family homes, so it doesn't go to a public hearing and a neighbor can't object it away. But your city still sets owner occupancy, registration, parking and sometimes a lot-size minimum, and those are what actually stop projects.
- Do I have to live in the house to rent the basement?
- In nearly every city in this corridor, yes — you have to occupy one of the two units, and several cities record that as an affidavit against the property. That single rule is what rules out buying a house purely to rent both halves, and it's the first thing to confirm if you're making an offer on the strength of the rental income.
- What makes a basement apartment illegal?
- Usually one of three things: the unit was never permitted, the egress window doesn't meet code, or the construction was permitted but the separate rental registration was never filed. The third one is the cruel version — the work passes every inspection and the unit still isn't legal to rent.
- I'm buying a house with a basement apartment. How do I know it's legal?
- Ask the city, not the seller or the listing. Some cities publish a list of legally approved accessory apartments by address, and in at least one city here the registration goes void the moment the house sells, so a legal unit does not automatically come with the house. It's a phone call worth making before closing rather than after.
- Will you tell me whether my house qualifies?
- Yes, and there's no charge for it. Lot size, zone, and your city's current ordinance are lookups rather than labor — it takes a few minutes and doesn't require anyone coming out. Call (801) 855-6621 or send your address through the estimate form.
Want to know if your house qualifies?
Send us your address. Lot size, zone, and your city's current ordinance are a few minutes of lookup — no visit, no charge, and no obligation to build anything.
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