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Homes with Casitas & Guest Houses in Erda, Utah
Erda sits in the north end of Tooele Valley, about 35 minutes from downtown Salt Lake and twenty minutes from the SLC airport once you clear the Bauer exit. It's one of the few spots within commuting distance of the city where you still see one- and five-acre lots, room for horses, and the kind of setbacks that make a detached casita or full guest house actually feasible. Most of the homes here were built on agricultural-zoned parcels or in newer subdivisions like Liddell Lane and Erda Acres, where lot sizes give owners space to add a second dwelling without crowding the main house. That's why secondary living quarters show up more often in Erda than in tighter Wasatch Front cities — the land supports it, and Tooele County's ADU rules are generally workable on parcels over half an acre.
Buyers looking at casita and guest house properties in Erda tend to fall into a few camps: multigenerational families wanting separate space for aging parents or adult kids, remote workers who need a detached office, and owners planning a long-term rental or Airbnb income stream (Tooele County short-term rental rules are looser than Park City's, but always verify with the county before counting on rental income). Inventory turns over slowly out here, so options come and go fast. Browse the active listings below to see which Erda properties currently include a casita, mother-in-law suite, or fully separate guest house.
May 2026 · Erda market
Live from the Utah MLS — what's actually happening in Erda right now.
Median sale
$640,000
5 closed in May 2026
Median DOM
59 days
listing → contract
Sale-to-list
98.5%
of final list price
Unsold inventory
25
active + pending
1 matching · page 1 of 1
Active listings
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Common questions
About homes with casitas & guest houses in Erda.
Does Tooele County allow casitas and guest houses on Erda properties? ▾
Yes. Tooele County permits accessory dwelling units in most of the residential and agricultural zones that cover Erda, including RR-1, RR-5, and A-20. Rules vary on size, setbacks, and whether the unit can be rented separately, so confirm the specific zone and any deed restrictions before writing an offer. The recent Erda incorporation in 2022 means some standards may continue to evolve at the city level.
What's the typical price premium for an Erda home with a casita? ▾
Most buyers should budget $75,000 to $200,000 above a comparable single-residence property on the same size lot. A finished detached guest house with its own kitchen, bath, and separate entrance sits at the top of that range, while a converted bonus room or attached mother-in-law suite falls toward the bottom.
Can I rent out the guest house as a long-term or short-term rental? ▾
Long-term rentals are generally allowed on properties zoned for ADUs in Erda, but short-term rentals (under 30 days) face more restrictions and may require a permit or be prohibited outright depending on the specific parcel. Always verify with Erda City and check any HOA or subdivision covenants before counting on rental income.
Do casitas in Erda usually have separate utility meters? ▾
It varies. Older properties often share water, power, and septic with the main house, while newer purpose-built guest houses sometimes have dedicated electric meters and separate septic systems. Separate meters matter if you plan to rent the unit, so check the seller's disclosures and look at the most recent utility bills.
Are most Erda guest houses attached or detached? ▾
Detached is more common here than along the Wasatch Front because lot sizes support it. Buyers often see standalone casitas of 600 to 1,200 square feet sitting 30 to 100 feet from the main residence, sometimes combined with a shop, barn, or RV garage. Attached mother-in-law setups exist too, usually as basement apartments with private entrances.
How many Erda homes with casitas are typically on the market? ▾
Inventory is thin — Erda itself only has a few hundred homes, and the subset with true secondary dwellings is small. At any given time there may be only two to six active listings matching this filter, so setting up an MLS alert is the practical way to catch new ones quickly.