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Homes with Casitas & Guest Houses in Brigham City, Utah
Brigham City sits at the north end of the Wasatch Front, about 60 miles from the Salt Lake airport and tucked between the Wellsville Mountains and the Bear River Bay of the Great Salt Lake. It's a town with deep multigenerational roots — the kind of place where families stay put, parents age in place, and adult kids move back from college in Logan or Ogden. That cultural pattern is exactly why homes with casitas, detached guest houses, and accessory dwelling units get snapped up quickly here. Buyers want a separate space for aging parents, a returning missionary, a college student commuting to USU, or a rental unit that helps offset the mortgage on a larger property out toward Mantua or Perry.
Lot sizes in Brigham City work in your favor for this search. Older homes near the historic downtown grid sit on quarter-acre and half-acre parcels with room for a converted carriage house or a new detached unit, and properties east toward the bench or west toward the farmland often include outbuildings that have been finished out as secondary living. Permitting through Box Elder County and the city is generally more straightforward than what buyers see in Salt Lake or Utah County, but legal status varies property to property — some casitas are fully permitted ADUs, others are informal conversions. Browse the active listings below to see which homes currently on the market include a secondary dwelling, and we can help you sort out which ones are permitted versus grandfathered.
May 2026 · Brigham City market
Live from the Utah MLS — what's actually happening in Brigham City right now.
Median sale
$406,250
26 closed in May 2026
Median DOM
8 days
listing → contract
Sale-to-list
99.1%
of final list price
Unsold inventory
82
active + pending
3 matching · page 1 of 1
Active listings
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Common questions
About homes with casitas & guest houses in Brigham City.
Are casitas common in Brigham City? ▾
They're less common here than in places like St. George or Park City, but they do come up — usually on larger lots in the foothills east of Main Street, on properties west toward Perry and Willard, or on older homesteads with detached garages converted to ADUs. Expect a handful of active listings at any given time rather than dozens.
Can I rent out a guest house in Brigham City as a short-term rental? ▾
Brigham City regulates short-term rentals through its zoning ordinance, and most residential zones don't permit nightly rentals without a conditional use permit. Long-term rentals of a legal ADU are generally allowed if the unit meets building and occupancy codes. Confirm the specific zoning on any property with the city before counting on STR income.
What's the difference between a casita, an ADU, and a mother-in-law suite in this market? ▾
Listings use the terms loosely. A true casita or ADU is typically a separate structure with its own kitchen, bath, and entrance — and ideally a permit on file with Box Elder County. A mother-in-law suite is usually an attached basement apartment. The permit status matters most for financing and resale.
Will a guest house add appraisal value in Brigham City? ▾
A permitted, legal ADU with a kitchen and full bath generally appraises higher than a comparable single-family home, though the bump is smaller than in Salt Lake or Davis County. Unpermitted conversions often don't add appraised value at all and can complicate conventional financing.
What price range should I expect? ▾
Most homes with legitimate casitas or guest houses in Brigham City fall in the upper-$500s to $900s, depending on lot size, age, and whether the secondary unit is fully permitted. Acreage properties on the bench or out toward Mantua can run higher.
Are casitas useful year-round given Brigham City's winters? ▾
Yes, as long as the unit has its own heat source and insulated plumbing. Brigham City winters are colder than southern Utah — January lows drop into the teens and lake-effect snow rolls in off the Great Salt Lake — so look for separate furnaces or mini-splits rather than space heaters, and check that exterior water lines are protected.