ADU FinancingOptions

ADU Loan Rates: What Sets Them and How to Compare

There is no single ADU loan rate. The rate you are offered depends on the type of loan, where it sits behind your mortgage, how much equity you have, your credit and how much risk the lender sees in the build. Knowing those levers helps you compare offers fairly.

Get matched with an ADU lenderCompare all options
Homeowner comparing two printed loan offers side by side
  • We explain every option, not just one product
  • Matched with lenders who finance ADUs
  • No obligation to take any offer

What moves the rate on an ADU loan

Loan type comes first. A cash-out refinance replaces your first mortgage, so it is priced like one. A HELOC or home equity loan sits in second position behind your mortgage, and lenders charge for that extra risk. Construction loans carry the risk of an unfinished project, which usually shows up in the price.

Then the structure. A fixed rate stays the same for the life of the loan. A variable rate, common on HELOCs, follows an index and can rise or fall.

Then you. More equity left over after the loan, stronger credit and a lower debt to income ratio all tend to earn better pricing.

At a glance

  • Loan type: first lien, second lien or construction
  • Rate structure: fixed or variable
  • Your equity: how much is left after the loan
  • Your profile: credit, income and debts

Fixed and variable rate pros and cons for an ADU

Pros

  • A fixed rate gives you one predictable payment
  • A variable rate may start lower than a fixed one
  • A variable HELOC charges interest only on what you draw
  • Either can be refinanced later if rates move your way

Cons

  • A fixed rate can cost more at the start
  • A variable rate can rise during or after the build
  • Refinancing later brings new closing costs
  • The lowest headline rate can hide higher fees

When another loan fits better

Once you have a quote, run it through the ADU loan calculator to see the payment. If you want a fixed rate without touching your first mortgage, look at a home equity loan. If your current mortgage rate is high anyway, price a cash-out refinance.

ADU loan rate questions

Is it cheaper to get a construction loan or mortgage?

A regular mortgage is usually priced lower, because the home already exists. A construction loan prices in the risk of the build. If it converts to a permanent mortgage at the end, ask how the rate is set at that point.

How should I compare ADU loan offers?

Get quotes on the same day, for the same loan type and amount. Compare total cost, not just the rate: origination fees, points and closing costs all count. For most closed end loans, lenders give you a standard Loan Estimate form that lines these up.

Should I pay points to get a lower rate?

Points are paid upfront to lower the rate. They pay off only if you keep the loan long enough. If you might refinance or sell soon, paying points rarely makes sense.

Talk to a lender who finances ADUs

Rates only mean something once a lender has seen your project. Tell us about it and we will connect you with a lender who finances ADUs so you can compare real offers.

Talk to a specialist: (555) 555-0141

All fields are required unless marked optional.

The whole project, not a loan amount.

Talk to a specialistGet matched