Live American Fork listings, filtered
Homes with an ADU or casita in American Fork.
American Fork listings with an accessory dwelling unit, whether that is a basement apartment, an attached mother-in-law suite, or a detached casita, fed straight from the MLS and sorted newest first, with a clear read on what makes an accessory unit legal here and what to verify before you write an offer.
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Newest first
The newest ADU and casita listings.
Fed straight from the local MLS and filtered to homes that note an accessory dwelling unit, a basement apartment, a mother-in-law suite, or a casita: new American Fork listings appear here as they list, and sold homes drop off. The read on what makes one legal is just below.
See every listing on the map
The full American Fork inventory with the map, list view, and search filters. No account needed to look.
Hear about new matches first
Tell me what you are after and I will flag new listings that fit, usually the morning they go live.
This filter too narrow?
Browse every American Fork listing, or slide sideways: homes with a basement, single story, no hoa.
If the grid looks thin today, that is the real American Fork market, not a glitch: a finished basement is the Utah Valley norm here, but one built out as a separate unit with its own kitchen and entrance is a narrower slice, and the legal-versus-existing question (below) narrows it further. Tell me what you are after and I will have the American Fork-area partner agent I work with flag the next match the morning it lists.
Listing information comes from the local MLS and is deemed reliable but not guaranteed.
The local read
What an ADU or casita really means in American Fork.
An accessory dwelling unit is a property feature, not a promise. On an American Fork listing the label covers three different things: a basement apartment with its own way in, an attached mother-in-law suite carved out of the main house, and, far less often here, a detached casita standing apart from the home. All three describe a self-contained living space with a second kitchen, its own bathroom, and a private entrance, and sometimes a separate utility meter. What none of them tells you is whether the space is permitted, and that is the question this page is built around.
American Fork is good ground for this search for a simple structural reason. Basements are the Utah Valley norm here, so the city's deepest band of conventional resale, the post-war through 1990s ramblers, split-levels, and two-story homes in the established north-central blocks between downtown and the bench, carries a deep stock of full finished basements that already double the living space. Adding a second kitchen and a private entrance to that kind of basement is the most common accessory unit in town by a wide margin. On the sloped northeast bench toward the canyon mouth a lower level can be a true walkout, which is the version that lives brightest, and the newer subdivisions on the west side and the lakeshore flats sometimes carry a suite built into the floor plan from the start.
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 suite added off the back of the house or a converted outbuilding. A second kitchen and an outside door do not make a unit conforming on their own, and a great many existing accessory units in older 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. The two questions that decide everything are whether the unit is permitted with American Fork City, where what is allowed depends on the parcel's zoning, and whether it has its own legal egress, meaning a code-sized window well or door out of every sleeping room below grade.
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 north-central ramblers are the natural hunting ground, so the single-story page and the no-HOA page are useful next stops, and the bigger plans on the two-story page sometimes carry the deepest lower levels. If you mostly want the lower level itself rather than a separate unit, start on the basement homes page, which is the wider search this one narrows. Earlier in the process than show me listings? Start with the American Fork guide, and when a home below reads right, that is the moment to reach out.
What counts as an accessory unit
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The three forms here: a basement apartment with its own entrance, an attached mother-in-law suite off the main floor, or a detached casita in the yard. In American Fork the basement version is by far the most common, and a fully detached casita is the rarest.
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Second kitchen: a full or kitchenette setup is the core marker. A finished basement with no kitchen is just finished space, not a separate unit, so read the listing for the actual layout.
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Separate entrance: the second front door of the page title. A private exterior entry, often a walk-down, a side door, or a courtyard door on a casita, is what makes the space usable on its own rather than a through-the-house extension.
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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 a detached casita may run on its own panel. It is a convenience, not proof of legality, so note it but do not read it as a permit.
The local map
Where the accessory units actually are.
Homes with a built-out second living space turn up across American Fork, but a true separate suite concentrates in a few patterns, and the form changes with the era and the ground. Here is where to look, and the due-diligence note attached to each.
The established north-central blocks
The post-war through 1990s ramblers, split-levels, and two-story homes between downtown and the bench sit over the city's deepest stock of full basements. This is the most likely place to find a real separate suite, almost always as a basement apartment, and also the most likely place to find one that was finished without a permit, so it is the area where verification matters most.
Split-level floor plans
American Fork's older rings carry a genuine signature of split-level stock, and the layout lends itself to a lower level with its own grade-level door. The split design can put a private entrance just a half-flight down, which is why so many conversions started here. Confirm the egress windows on the bedrooms below.
The historic Main Street grid
The pioneer-era and early-1900s character homes near Main Street and Robinson Park sometimes hold a finished lower level set up as separate space, and the older lots are the likeliest place in town for a detached outbuilding that someone has converted. Older foundations and systems reward a careful inspection here, and an old conversion is the most likely to be non-conforming, so date the work and confirm the permit history.
The northeast bench toward the canyon
On the rising ground toward the American Fork Canyon mouth and the Highland line, sloped lots let a lower level open to grade as a true walkout. A walkout suite lives like its own floor with full windows and a real door rather than a dark basement, which is the ideal setup, and the larger bench-custom lots are where a detached casita is at least possible, though it is not the American Fork norm.
Newer west-side and lakeshore subdivisions
The 2000s-to-2020s subdivisions on the west side toward The Meadows and the lakeshore flats toward Utah Lake have younger systems and plenty of full basements, some finished as separate living space, and a newer plan is where a suite designed into the house from the start is most likely to turn up. A newer build is more likely to have been finished with permits, but you still verify it parcel by parcel.
Larger and bench-custom plans
The bigger floor plans, more common in the newer subdivisions and the bench-custom stock, often have the deepest and tallest basements, which makes a comfortable second kitchen and a real bedroom downstairs more workable than in a low older basement. Ceiling height is the thing to stand in and feel.
Before you tour: what to actually check
Which form is it: a basement apartment, an attached suite, or a detached casita are three different purchases. Ask before you drive out, and if it is below grade, stand in it and measure the ceiling height rather than trusting the photos.
Is it permitted: ask the listing agent for the permit history and confirm the unit's status, and the parcel's zoning, with American Fork City. A second kitchen and a side door do not make a unit legal on their own.
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 parking: check whether the kitchen, HVAC, and any meter are genuinely separate, whether the wiring and gas work were done to code and inspected, and where a second vehicle would actually park.
Irrigation and the rest: American Fork runs pressurized irrigation as a separate outdoor water system billed year-round, so check the bill, and on any older-core or historic home, date the roof, furnace, electrical panel, and sewer lateral.
Want a real accessory unit without the guesswork?
Tell me your budget, the part of American Fork you like, which form you are after, whether that is a basement apartment, an attached mother-in-law 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 American Fork-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 accessory units and which are just finished rooms with a door.
Selling an American Fork home with an accessory unit, a basement apartment, or a casita? The buyers reading this page want exactly that. List it with the American Fork-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.
The label covers three different spaces. A basement apartment is a lower level built out on its own, an attached suite or mother-in-law apartment is carved out of the main house with a private door, and a detached casita is a separate small building near the home. All three usually mean a second kitchen, a bathroom, and a separate exterior entrance, and sometimes a separate utility meter. In American Fork the basement version is by far the most common. It is a property feature describing the space, nothing more, so the real work is confirming whether the unit is permitted and conforming with American Fork City, where what is allowed depends on the parcel's zoning.
Some are and some are not, which is exactly why you verify rather than assume. An accessory unit has to be permitted with American Fork City to be treated as a separate dwelling, and what is allowed depends on the parcel's zoning, so many existing units in older homes were finished over the years without permits or were built before today's rules and 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.
Most often in the established north-central blocks between downtown and the bench, the post-war through 1990s ramblers, split-levels, and two-story homes that sit over the city's deepest stock of full basements, where the accessory unit is almost always a basement apartment. The newer west-side and lakeshore subdivisions can carry a suite built into the floor plan, and a sloped bench lot toward the canyon can make the lower level a true walkout that lives like its own floor. A fully detached casita is the rarest form here. 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 unit is a different thing from a non-conforming space that happens to have a kitchen, and the rules around accessory units and rentals can change, so this is a question to confirm with American Fork City for the specific parcel, 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 allows.
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 below-grade bedroom or accessory unit count as legal living space. 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.
Tell me the budget, the part of town, and whether you need a fully permitted unit or are open to an existing space to verify, and I will connect you with an American Fork-area partner agent and flag matching listings as they go live. These are a narrow slice and they do not sit long, so it helps to be ready to move when the right separate-suite home lists; a quick conversation up front lets me line up the legality checks the moment one does.