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Homes with Casitas & Guest Houses in Coalville, Utah
Coalville sits in the Weber River valley about 15 minutes north of Park City along I-80, and it's one of the few Summit County towns where buyers can still find acreage at a fraction of Park City prices. That extra land is exactly why casitas and detached guest houses show up here more often than in tighter Wasatch Front suburbs. Properties along Chalk Creek Road, Hoytsville, and the outskirts toward Wanship frequently include a secondary dwelling — sometimes a permitted ADU above a detached garage, sometimes a converted bunkhouse or barn apartment from the area's ranching past. With the county seat right in town and South Summit School District serving the area, Coalville draws multigenerational families, Park City commuters who want elbow room, and weekend owners who need space for visiting kids and grandkids.
Climate matters when you're evaluating a guest structure here: Coalville sits at roughly 5,600 feet, gets real winters with sub-zero nights, and summer highs typically stay in the mid-80s. That means a casita needs proper insulation, freeze-protected plumbing, and a real heat source — a converted summer-only outbuilding will frustrate anyone planning year-round use. Pay attention to whether the secondary unit is permitted as an ADU with Summit County, whether it has its own utility meters or shares with the main house, and how septic capacity is rated if the property is outside city sewer. Browse the active Coalville listings with casitas and guest houses below to see what's currently on the market.
May 2026 · Coalville market
Live from the Utah MLS — what's actually happening in Coalville right now.
Median sale
$547,000
3 closed in May 2026
Median DOM
258 days
listing → contract
Sale-to-list
96.7%
of final list price
Unsold inventory
39
active + pending
4 matching · page 1 of 1
Active listings
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Common questions
About homes with casitas & guest houses in Coalville.
Are casitas common on Coalville properties? ▾
They're more common here than in tighter Wasatch Front suburbs because Coalville lots tend to be larger — many parcels run from a half-acre up to several acres, with room for a detached guest house, bunkhouse, or converted barn. You'll see them most often on properties out toward Chalk Creek, Hoytsville, and the Wanship side of town. Inventory is thin overall, so listings with a true secondary dwelling move quickly.
Can I rent the casita out short-term? ▾
Summit County and Coalville City both regulate short-term rentals, and rules differ depending on whether the property is inside city limits or in unincorporated county. Nightly rentals (under 30 days) are restricted in most residential zones, while long-term rentals of a legal ADU are generally allowed. Verify the specific parcel's zoning and any HOA rules before assuming income potential.
What's the difference between a legal ADU and a non-conforming guest house? ▾
A legal ADU (accessory dwelling unit) has been permitted with the county or city, has its own approved kitchen, bath, and egress, and shows up on the assessor's record. Many older Coalville properties have guest quarters above garages or in outbuildings that were never permitted as living space — they may have kitchens and beds but can't be legally rented or counted as bedrooms. Ask for permit history before writing an offer if the casita is central to your plans.
How does water work for a detached guest house on acreage? ▾
Most in-town Coalville properties run off municipal water, so a casita usually ties into the main service. On larger parcels outside city limits, the home may be on a private well with state-allotted water rights — adding or supplying a second dwelling can require additional water rights or a separate connection. This is worth checking with the Utah Division of Water Rights early in due diligence.
Why do buyers want casitas in Coalville specifically? ▾
Coalville sits about 15 minutes from Park City and 45 minutes from Salt Lake, so guest houses get used for visiting family during ski season, aging parents who want their own space, or remote-work setups separated from the main house. Some buyers also use them as caretaker quarters on horse properties along the Weber River corridor.
What price range should I expect? ▾
Coalville homes with legitimate guest houses generally start in the high $700s for older farmhouses on modest acreage and climb past $1.5M for newer builds on larger parcels with mountain frontage. The premium for a permitted ADU over a comparable single-dwelling property typically runs $100K–$200K, depending on the casita's size, finish level, and whether it has its own utilities.