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Homes with Casitas & Guest Houses in Alpine, Utah
Alpine sits at the north end of Utah County right against the foot of the Wasatch, with Lone Peak and Box Elder Peak rising straight out of the back yards on the east bench. It's a low-density town by design — large lots, horse property zoning in pockets, and a long-standing preference for custom builds over tract product. That combination is exactly why casitas and detached guest houses show up here more often than in neighboring Highland or Lehi. Lot sizes of half an acre to two-plus acres give owners the room to add a separate structure without crowding the main house, and the city's ADU and accessory structure rules have historically been workable for guest quarters tied to the primary residence.
Buyers shopping this filter in Alpine tend to fall into a few camps: multigenerational families housing parents or adult kids, remote executives who want a detached office or studio, and second-home owners from out of state who need space for visiting family. Price points generally run from the high $1Ms into the $4M+ range depending on acreage, finish level, and whether the casita is a true permitted dwelling versus a guest suite. Proximity matters too — most listings are 10 minutes from Lone Peak High, 25 minutes to Silicon Slopes employers in Lehi, and about 45 minutes to Salt Lake International. Browse the active listings below to see which Alpine properties currently include a casita, detached guest house, or finished accessory structure.
May 2026 · Alpine market
Live from the Utah MLS — what's actually happening in Alpine right now.
Median sale
$1,880,000
7 closed in May 2026
Median DOM
22 days
listing → contract
Sale-to-list
95.9%
of final list price
Unsold inventory
48
active + pending
11 matching · page 1 of 1
Active listings
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Common questions
About homes with casitas & guest houses in Alpine.
What's the difference between a casita and a guest house in Alpine listings? ▾
Agents use the terms loosely, but generally a casita is a smaller attached or semi-attached suite with its own entrance, while a guest house is a fully detached structure with a kitchen, bath, and living space. In Alpine, true detached guest houses are more common on the larger east-bench lots where there's room to separate the buildings and still meet setbacks.
Does Alpine allow short-term rentals in a casita or guest house? ▾
Alpine has been restrictive on short-term rentals compared to resort towns. Most casitas here are used for family, long-term tenants, or home offices rather than nightly rentals. Verify current city code and any HOA rules before buying with STR income in mind — the rules have shifted in recent years.
Are these accessory structures usually permitted as legal dwellings? ▾
It varies. Some are fully permitted ADUs with separate utility meters and certificates of occupancy; others are listed as guest quarters, pool houses, or finished outbuildings without full kitchen permits. The distinction matters for financing and appraisal, so ask for permit history and the original building plans during due diligence.
How many Alpine homes with a casita or guest house are typically on the market? ▾
Inventory is thin — usually a handful at any given time out of roughly 30 to 60 active Alpine listings citywide. Custom homes with detached guest quarters often sell within a few weeks when priced correctly because the buyer pool for this configuration is small but consistent.
What price premium does a guest house add in Alpine? ▾
A finished, permitted detached guest house of 600 to 1,200 square feet typically adds $250K to $600K versus a comparable home without one, depending on finish level and whether it has a full kitchen. Unpermitted bonus structures add less and can complicate the appraisal.
Can I get conventional financing on a property with a second dwelling? ▾
Yes, most lenders treat it as a single-family home with an accessory structure as long as the property is zoned for one primary residence. If the guest house is large enough to be classified as a second unit, you may need a different loan product. Talk to a local lender early — Alpine-specific comps help the appraisal.