How to Finance an ADU in Utah: 5 Ways to Pay for a Backyard Home
The build price is only half the question — the other half is how you pay for it. Good news: because a backyard ADU sits on land you already own and can earn rent from day one, it's one of the most financeable projects a Utah homeowner can take on. Here are the five routes people actually use.
The five ways Utahns fund an ADU
HELOC (home equity line of credit)
A revolving line against your home's equity. Flexible and popular for ADUs — you draw as the build progresses and only pay interest on what you use. Best when you've got solid equity and want flexibility.
Cash-out refinance
Replace your mortgage with a larger one and take the difference as cash to build. Makes the most sense when today's rates are near your current rate, since you're resetting the whole loan.
Renovation / construction loan
A loan sized to the home's value after the ADU is built, not before — useful when you don't have enough existing equity yet. A fixed build price makes these cleaner, because the lender is funding a known number.
Home equity loan
A lump sum at a fixed rate against your equity — predictable payments, good when you want the full amount up front and rate certainty.
Cash
If you have it, paying cash and letting the rent recoup it is the cleanest play of all — no financing cost against an asset that starts earning immediately.
Why the rent changes the math
An ADU is unusual: the thing you're borrowing for helps pay the loan back. Across the Wasatch Front, Arena plans rent for an estimated $1,400–$2,850 a month — so a chunk of your new payment is covered by a tenant from month one. Run the full rent-vs-payment picture in the Utah house-hacking playbook.
Why a fixed price makes financing easier
Lenders hate uncertainty, and open-ended construction quotes are pure uncertainty — which is why they get scrutinized. Arena's price is fixed at $175 per square foot, turn-key, so the number you bring to your lender is the number you'll actually spend. No mid-build repricing, no change-order surprises for an underwriter to worry about. See exactly what that price includes.
Start with your number
The right financing route depends on your equity, your rate, and your goal — talk to a lender, and talk to an Arena advisor who can hand them a fixed price. Run the 3-minute estimator to see the build cost and rent for your lot first.
Get your number
An Arena advisor runs your address, your goal, and your budget — and calls back with a fixed price and a floorplan that fits.
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