Live Hyrum listings, filtered
Homes with an ADU or casita in Hyrum.
Hyrum 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 Hyrum 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 existing before you tour.
A second kitchen and a private entrance do not make a unit legal on their own here, so the real question is whether the space is permitted with Hyrum City and has proper egress. Tell me what setup you need and I will have the Hyrum-area partner agent I work with pull the permit history on any home you flag.
Selling here
Own a Hyrum home with a documented accessory unit?
Buyers on this page want the basement apartment, the attached suite, or the detached casita with the paperwork to back it up. List it with the Hyrum-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 Hyrum.
An accessory dwelling is a property feature, not a promise. On a Hyrum 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 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, flexible multigenerational living under one roof and a rentable suite where the unit is legal, and both turn on the same homework, which is whether the space is actually permitted with Hyrum City.
Hyrum is reasonable ground for this search, and the form it takes most often is the basement apartment. This is a cold-climate Cache Valley town at the mouth of Blacksmith Fork Canyon, the frost line runs deep, so foundations go down and full basements are the expected norm rather than the exception. The older and mid-century homes on the original Main Street and Center grid sit over basements that have been finished and refinished over the decades, and adding a second kitchen and a private entrance to that kind of basement is exactly the conversion most of these listings describe. The newer single-family subdivisions filling in the city's edges carry full basements too, and a newer plan is more likely to have a tall, daylight lower level that lives well as a separate space. What sets a town like Hyrum apart from a built-out city is room to spread out: on the larger lots and the acreage running toward the foothills and the reservoir, a detached casita or a separate accessory structure has the space to sit that a packed-in city block never offers, so treat one as a real possibility here rather than a rarity.
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 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. Two questions decide everything: whether the unit is permitted with Hyrum City and whether it has its own legal egress, meaning a code-sized window well or door out of every sleeping room below grade. What an accessory dwelling is allowed to be on a given property depends on that parcel's zoning, so the answer is property-specific, not citywide.
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-grid homes and the larger newer plans are the natural hunting ground, so the single-story page and the two-story page are useful next stops, and because a detached casita or a private entrance is easier on a bigger lot, the no-HOA page and the acreage toward the foothills are where it fits. If you only want the extra square footage and not a second kitchen, the homes with a basement page is the wider search. Earlier in the process than show me listings? Start with the Hyrum 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 Hyrum most of these are basement apartments, since full basements are the cold-climate norm here. Attached mother-in-law suites turn up too, and on the larger lots and acreage a detached casita has the room to sit, so read the listing for where the space actually is.
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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 lot toward the canyon 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. Note that Hyrum's power comes from the municipal utility, so a separate electric meter is a city question. It 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 Hyrum, but the forms concentrate in a few patterns, and the basement apartment is the most common. Here is where to look, and the due-diligence note attached to each.
The old Main Street grid
The original pioneer blocks around Main and Center hold the older and mid-century homes on mature-tree, in-town lots tied to city culinary water and sewer. These sit over basements that have been finished over the decades, which makes them the most likely place to find a real basement apartment or an attached suite, and also the most likely place to find one finished without a permit. This is the area where verification matters most.
The newer subdivision streets
The single-family streets filling in the city's edges as Cache Valley grew carry younger systems and full basements, some built out as separate living space. A newer build is more likely to have been finished with permits, but you still confirm the unit's status and the egress windows on every bedroom below grade.
Daylight and walkout lower levels
On sloped ground toward the canyon mouth and the foothills, a lower level can open to grade with full windows and a real door, which is the ideal setup for a separate suite that lives like its own floor rather than a dark basement. These are less common in town but worth watching for on the edges.
Larger newer floor plans
The bigger newer two-story plans 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. Read the finished-basement square footage and the ceiling height into what you are buying.
The acreage and fringe homes
On the valley acreage running toward the foothills and the reservoir, a larger parcel has the room a built-out city never does, which is where a detached casita or a separate accessory structure actually fits, alongside a built-out lower level and space for parking and outbuildings. On these parcels you are also verifying the water shares, well, and septic, so the lot homework rides along with the unit question. The acreage page carries that detail.
Toward the reservoir and canyon side
The land sloping southwest toward Hyrum Reservoir and Hyrum State Park and east toward Blacksmith Fork Canyon mixes older and newer homes, and an accessory unit here pairs a flexible floor plan with recreation out the door. Note that a multi-year spillway project at Hyrum Dam means construction activity near the state park, which is buyer-material for reservoir-side parcels.
Before you tour: what to actually check
Is it permitted: ask the listing agent for the permit history and confirm the unit's status and the parcel's zoning with Hyrum City. A second kitchen and a side door do not make a unit legal on their own, and what is allowed depends on the parcel.
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: check whether the kitchen, HVAC, and any meter are genuinely separate, and whether the wiring and gas work for the second kitchen were done to code and inspected. Hyrum's electric runs through the municipal utility, so a meter split is a city question.
Attached, detached, or below grade: note which form you are actually looking at, because they live very differently, and an older basement can be low. Stand in it. A tall, daylight, or walkout lower level lives very differently from a short, fully below-grade basement, and a detached casita is its own building to inspect.
Water and the older-home checklist: Hyrum runs two water systems, city culinary plus a pressurized secondary irrigation line, so check both bills, and on any older-grid home date the roof, furnace, electrical panel, and sewer lateral.
Want a real accessory dwelling without the guesswork?
Tell me your budget, the part of Hyrum you like, whether you want a basement apartment, an attached suite, or a detached casita on a bigger lot, 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 Hyrum-area partner agent for the on-the-ground work and stay on the file for the homework and the financing. You get a local who knows which spaces are legal units and which are just finished basements with a door, and a second set of eyes who answers to you.
Selling a Hyrum home with a basement apartment, a casita, or an attached accessory suite? The buyers reading this page want exactly that. List it with the Hyrum-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 Hyrum the most common form is a basement apartment, a 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 Hyrum City and what the specific parcel's zoning allows.
Some are and some are not, which is exactly why you verify rather than assume. An accessory dwelling has to be permitted with Hyrum City to be treated as a separate dwelling, what is allowed depends on the parcel's zoning, and 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.
Most often on the older Main Street and Center grid, where the older and mid-century homes sit over basements finished across the decades, and on the newer subdivision streets filling in the city's edges, where younger systems and full basements sometimes include a built-out lower level. On the larger lots and the acreage toward the foothills and the reservoir, there is room for a detached casita or a separate accessory structure that a packed-in city block rarely offers. A sloped or walkout lot toward Blacksmith Fork Canyon can make a lower level live like its own floor. 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, the rules around accessory dwellings and rentals can change, and what is allowed depends on the parcel's zoning, so this is a question to confirm with Hyrum 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 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 basement bedroom or apartment count as legal living space. It matters most on the basement units 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.
Tell me the budget, the part of town, and whether you need a fully permitted suite or are open to an existing space to verify, and I will connect you with a Hyrum-area partner agent and flag matching listings as they go live. Pair that with a pre-approval so you can move when the right separate-suite home lists, since these are a narrow slice in a small market and they do not sit long.