Live Lehi listings, filtered
Homes with an ADU or casita in Lehi.
Lehi listings with an accessory dwelling unit, whether that is a basement apartment, a detached casita, or an attached mother-in-law suite, fed straight from the MLS and sorted newest first, with a clear read on what makes one legal here and what to verify before you write an offer.
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Want it narrower? Tell me your exact spec.
Newest first
The newest ADU and casita listings.
Fed straight from the local MLS and filtered to homes that note an accessory dwelling unit, whether that is a basement apartment, a detached casita, or an attached mother-in-law suite. New Lehi listings appear here as they list, and sold homes drop off. The read on what makes one legal is just below.
Buying here
Sort permitted from simply finished.
A finished basement with a kitchenette and a side door is not automatically a legal second unit, so the question that matters most is whether it is permitted with Lehi City. Tell me what setup you are after and I will have the Lehi-area partner agent I work with pull the permit history on any home you flag.
Selling here
Own a Lehi home with a documented accessory unit?
Buyers on this page want a basement apartment, an attached suite, or a casita with the paperwork behind it, not just a finished room with a door. List it with the Lehi-area partner agent I connect you with and it goes in front of exactly that search.
Listing information comes from the local MLS and is deemed reliable but not guaranteed.
The local read
What an accessory dwelling really means in Lehi.
An accessory dwelling is a property feature, not a promise. On a Lehi listing it means a secondary living space that can function on its own: a second kitchen, its own bathroom, a separate exterior entrance, and sometimes a separate utility meter. The words move around. A basement apartment is a finished lower level built out that way, a casita is usually a detached unit set apart from the house, and a mother-in-law suite is usually an attached apartment on the main or upper floor. The search shows up for two honest reasons, multigenerational living under one roof and a separate suite where the unit is legal, and both turn on the same homework, which is whether the space is actually permitted with Lehi City.
Lehi is good ground for this search, and the form it takes here is mostly the basement apartment. The high-desert valley frost line is deep, so foundations go down and finished basements are close to the norm, and the city makes a point of it: homes here with substantially finished basements have sold at a much higher median than those without, so finished lower-level square footage carries real, measurable resale value. The older grid around historic downtown and the Roller Mills holds smaller-lot, established stock where a full basement has had decades to get finished, and the larger newer homes through the master-planned core and up the Traverse Mountain bench routinely carry deep, finished lower levels. Adding a second kitchen and a private entrance to that kind of basement is exactly the conversion most of these listings describe. An attached mother-in-law suite turns up in the bigger floor plans, and on the sloped bench a lower level can open to grade as a walkout with full windows and a real door. A fully detached casita is the rarest shape in a city building this fast, since it takes a lot with room for a second structure, so treat one as a find rather than an expectation.
Here is the part that matters more than the photos. A finished basement is not the same as a legal apartment, and neither is a converted room over the garage or a guest building out back. A second kitchen and an outside door do not make a unit conforming on their own, and a great many existing accessory units in Utah housing were finished over the years without permits or were built before today's rules. That is not a reason to walk away, but it is the reason to verify rather than assume. What is allowed turns on the parcel's zoning, and in Lehi's master-planned communities the community's own recorded rules can restrict an accessory unit on top of the zoning. The two questions that decide the most are whether the unit is permitted with Lehi City and whether it has its own legal egress, meaning a code-sized window well or door out of every below-grade sleeping room.
Treat any income angle with the same caution. I will not quote you a rent number or a payment number on a page like this, because what a unit could earn depends on its legal status, the specific space, and rules that change, and a non-conforming unit cannot be counted on at all. What I can do is point you at the right stock. If a true separate suite is the goal, the older downtown grid and the larger detached homes are the natural hunting ground, so the single-story page and the two-story page are useful next stops. If you only want the extra square footage and not a second kitchen, the homes with a basement page is the wider search, and the no-HOA page matters here because a parcel with fewer recorded restrictions has one less layer to clear. Earlier in the process than show me listings? Start with the Lehi guide, and when a home below reads right, that is the moment to reach out.
What counts as an accessory dwelling
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The form it takes: in Lehi most of these are basement apartments, since finished full basements are close to standard in this stock. Attached mother-in-law suites turn up in the bigger homes, and a detached casita is rare, so read the listing for where the space actually sits.
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Second kitchen: a full or kitchenette setup is the core marker. A finished basement or a spare suite with no kitchen is just extra space, not a separate unit, so read the listing for the actual layout.
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Separate entrance: the second front door this search is really about. A private exterior entry, often a walk-down or a side door, is what makes the space usable on its own rather than a through-the-house extension. On a sloped bench lot it is often a true grade-level walkout.
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Separate egress: every sleeping room below grade needs a code-sized window well or a door to the outside. This is a safety item and a legality item at once, and it is the first thing to confirm in person.
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Separate utilities: some units have their own gas or electric meter, or at least split HVAC, and Lehi runs its own city power, so check the meter setup. A separate meter is a convenience, not proof of legality.
The local map
Where the accessory units actually are.
Homes with a second living space turn up across Lehi, but the forms concentrate in a few patterns, and the basement apartment is by far the dominant one. Here is where to look, and the due-diligence note attached to each.
Historic downtown and the original townsite
The older grid around Main Street and the Roller Mills holds the city's oldest stock on generally smaller lots. A full basement here has had decades to get finished, which is exactly where a real separate suite turns up, and also where one is most likely to have been finished without a permit, so this is the area where verification matters most.
The master-planned core: Holbrook Farms, Cold Spring Ranch, Ivory Ridge
The big newer communities filling central and north Lehi build larger homes with deep, full basements, many finished as living space, and the bigger floor plans are where an attached mother-in-law suite is most likely to sit. A newer build is more likely to have been finished with permits, but the community's own recorded rules can restrict an accessory unit on top of the zoning, so you confirm both.
The Traverse Mountain bench
The northeast bench climbing the Traverse Ridge carries larger and custom homes where a finished lower level adds real value. On the slope, a lower level often opens to grade as a walkout with full windows and its own door, which is the ideal shell for a separate suite. View and slope drive the price, so read the parcel, not just the floor plan.
Larger detached homes anywhere in the city
Away from the densest attached product, the bigger detached floor plans tend to carry the deepest and tallest basements, which makes a comfortable second kitchen and a real bedroom downstairs more workable than in a low older basement. Bigger lots are also the only place a detached casita has room to sit, so if a separate structure is the goal, that is the lot to look for. Footprint and ceiling height matter as much as the neighborhood.
Walkout and daylight lots
On the sloped bench lots and the parcels that step down toward the lake side, a lower level can open to grade with full windows and a real door, which is the setup for a separate suite that lives like its own floor rather than a dark basement. These are less common but worth watching for.
West and north Lehi toward the lake
The flatter, fast-growing side toward Utah Lake and the Saratoga Springs line is newer large-scale stock, much of it built with full finished basements. New construction is more likely permitted, but accessory-unit allowances still vary by parcel and community, so verify before you bank on a suite.
Before you tour: what to actually check
Is it permitted: ask the listing agent for the permit history and confirm the unit's status with Lehi City. A second kitchen and a side door do not make a unit legal on their own.
Zoning and community rules: what is allowed depends on the parcel's zoning, and in a master-planned area the community's own recorded rules can restrict an accessory unit. Confirm both layers for the specific address before you count on it.
Egress on every bedroom: each sleeping room below grade needs a code-sized egress window and well, or a door to the outside. Look at the actual window wells, not just the listing photos.
Conforming vs. existing: many older accessory units are non-conforming, finished before today's rules or without permits. Understand exactly what you are buying and what can and cannot be relied on.
Separate systems and the meter: check whether the kitchen, HVAC, and any meter are genuinely separate, and remember Lehi runs its own city power, so confirm how that lower-level service is set up and billed.
Ceiling height and light: an older downtown basement can be low. Stand in it. Tall, daylight, or walkout lower levels live very differently from a short, fully below-grade basement.
Want a real accessory dwelling without the guesswork?
Tell me your budget, the part of Lehi you like, whether you want a basement apartment, an attached suite, or a detached casita, and whether you need a fully permitted, conforming unit or are open to an existing space you would verify and possibly bring up to code. I will connect you with a trusted Lehi-area partner agent for the on-the-ground work and stay on the file for the homework and the financing, with straight answers about which spaces are legal units and which are just finished basements with a door.
Selling a Lehi home with a basement apartment, a casita, or an attached accessory suite? The buyers reading this page want exactly that. List it with the Lehi-area partner agent I connect you with, and your home gets featured across MovingUtah, on the pages they are already reading.
Quick answers
ADU and casita shopping, answered.
It is a secondary living space that can function on its own, and the listings use several words for it. In Lehi the most common form by far is a basement apartment, a finished lower level built out with a second kitchen, its own bathroom, and a separate exterior entrance. A casita usually means a detached unit set apart from the main house, and a mother-in-law suite usually means an attached accessory apartment on the main or upper level. All of them are property features describing the space, nothing more. The big thing to know is that a second kitchen and an outside door do not make a unit legal on their own, so the real work is confirming whether it is permitted and conforming with Lehi City and what the parcel's zoning and any community rules allow.
Some are and some are not, which is exactly why you verify rather than assume. An accessory dwelling has to be permitted with Lehi City to be treated as a separate dwelling, what is allowed depends on the parcel's zoning, and in a master-planned community the community's own recorded rules can restrict an accessory unit on top of that. Many existing basement apartments and converted suites in older homes were finished over the years without permits or were built before today's rules, so they are non-conforming. That is not a dealbreaker by itself, but you need to know which one you are buying. Confirm the zoning, the permit history, the unit's status, and the egress independently before you rely on it, and I will help line up those checks.
Because the numbers show it. Lehi homes with substantially finished basements have sold at a much higher median than those without, so finished lower-level square footage carries real, measurable resale value here, not just extra room. The deep valley frost line means foundations go down and full basements are close to standard, especially in the newer master-planned stock and up the Traverse Mountain bench, which is why a built-out lower level, and the separate-suite potential that can come with it, is such a live part of this market. The listings above are the honest count on any given week.
Most often in the older downtown grid around Main Street and the Roller Mills, where full basements have had decades to get finished, and in the larger detached homes through the master-planned core and up the Traverse Mountain bench, where deep, full basements are common. Attached mother-in-law suites turn up in the bigger two-story floor plans, and on a sloped bench lot a walkout lower level can make the space live like its own floor with grade-level windows and a door. A fully detached casita is the rarest form here, since it takes a lot with room for a second structure. The live listings above are the honest count on any given week.
Only where the unit is legal, and that is the whole point of the verification. A permitted, conforming accessory dwelling is a different thing from a non-conforming space that happens to have a kitchen, what is allowed turns on the parcel's zoning and any community rules, and those rules can change, so this is a question to confirm with Lehi City for the specific property, not to assume from the listing. I will not put a rent figure on a page like this, because it depends entirely on the unit's legal status and the specifics, but I can connect you with a local agent who will get you straight answers on what the city and the community allow.
Egress is a legal, code-sized way out of every below-grade sleeping room, usually an egress window with a window well sized for a person to climb out, or a door to the outside. It is both a safety requirement and a piece of what makes a basement bedroom or apartment count as legal living space. It matters most on the basement apartments that make up most of this search, and it is the first thing to confirm in person, because a room marketed as a bedroom downstairs is not really one without it. We check the actual window wells, not just the photos.