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Homes with Casitas & Guest Houses in Lehi, Utah
Casitas and detached guest houses are a growing ask in Lehi, and the reason is practical. Tech families relocating for jobs at Adobe, Xant, Ancestry, and the rest of Silicon Slopes often arrive with multigenerational households or remote-working spouses who need a real office, not a converted bedroom. A detached unit on a half-acre lot in Traverse Mountain, a basement apartment with private entry in Holbrook Farms, or a true mother-in-law suite above the garage in a Skyridge custom home all solve that problem. Lehi's zoning allows accessory dwelling units in most residential zones with conditions, and the city has been steadily approving more ADU permits since the state's 2021 internal ADU law took effect.
Pricing varies more than buyers expect. An older home in Lehi proper with a finished basement apartment can sit in the upper $500s to low $700s, while newer construction with a detached casita in the foothills above Thanksgiving Point or near the Mercer Hollow area frequently runs $1.2M and up. Lot size matters here — detached units need setbacks, and Lehi's newer subdivisions tend toward tight lots that won't accommodate a separate structure. Buyers focused on rental income should also check whether the unit is a legal ADU on record with the city versus an unpermitted finished space, since that affects appraisals and lender treatment. Browse the active listings below to see what's currently on the market with a casita, guest house, or qualifying mother-in-law setup.
May 2026 · Lehi market
Live from the Utah MLS — what's actually happening in Lehi right now.
Median sale
$589,900
133 closed in May 2026
Median DOM
10 days
listing → contract
Sale-to-list
99.5%
of final list price
Unsold inventory
409
active + pending
13 matching · page 1 of 1
Active listings
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Common questions
About homes with casitas & guest houses in Lehi.
What's the difference between a casita and a guest house in Lehi listings? ▾
Agents in Utah County use the terms loosely. A casita is usually an attached suite with its own exterior entrance, bedroom, bath, and sometimes a small kitchenette, while a guest house is a fully detached structure with its own address potential. Lehi City treats the detached version as an ADU and applies separate permit and parking rules.
Are detached guest houses legal to rent out in Lehi? ▾
Lehi allows internal and detached accessory dwelling units in most residential zones, but short-term rentals (under 30 days) are heavily restricted. Long-term rentals of a permitted ADU are generally allowed if the owner occupies the primary residence. Always verify the specific permit status with Lehi Planning before assuming rental income.
Which Lehi neighborhoods most often have casitas or guest houses? ▾
Traverse Mountain and the custom estates above Thanksgiving Point have the most detached guest houses because lot sizes support them. For attached casitas, look at newer builds in Holbrook Farms, Spring Creek, and Ivory's developments along 2100 North, where multigenerational floor plans are part of the standard option list.
What's the typical price premium for a home with a casita in Lehi? ▾
Expect roughly $75,000 to $200,000 over a comparable single-dwelling home, depending on whether the casita is attached or detached and whether it has a full kitchen. Detached guest houses on larger lots carry the biggest premium because the land itself is the scarce resource in Lehi right now.
Can I finance a Lehi home with a guest house using a conventional loan? ▾
Yes. Fannie Mae and Freddie Mac both allow single-family financing on properties with one ADU, and as of recent guideline updates, rental income from a legal ADU can sometimes be used to qualify. FHA also permits ADU income in many cases. Your lender will need the appraiser to confirm the structure is legal and conforming.
How many Lehi homes with casitas are typically on the market at once? ▾
Inventory is thin — usually somewhere between five and twenty active listings at any given time across all price points. New construction communities often have casita-ready floor plans available even when resale inventory dries up, so it's worth checking both channels.