Funding Your ADU: Options for Every Budget
The #1 barrier to building an ADU isn't desire — it's funding. With ADU costs varying by project type and scope, most homeowners need financing. Here are the six most common ways to fund your ADU project.
1. Home Equity Line of Credit (HELOC)
How it works: Borrow against your home's equity with a revolving credit line.
Pros: Lower interest rates than personal loans, flexible draw schedule, interest-only payments during construction.
Cons: Variable interest rates, your home is collateral, requires sufficient equity.
Best for: Homeowners with significant equity who want flexibility.
Typical rates: 7-9% variable (2025)
2. Home Equity Loan
How it works: A fixed-rate, lump-sum loan against your home's equity.
Pros: Predictable fixed payments, lower rates than personal loans.
Cons: Full amount disbursed upfront, closing costs, your home is collateral.
Best for: Those who want payment certainty.
Typical rates: 7-10% fixed
3. Cash-Out Refinance
How it works: Replace your current mortgage with a larger one, pocketing the difference.
Pros: Potentially lower overall interest rate, single payment.
Cons: Closing costs (2–3% of loan amount), resets your mortgage term, only makes sense if rates are favorable.
Best for: Homeowners whose current mortgage rate is higher than current rates.
4. Construction Loan
How it works: Short-term loan that covers construction costs, then converts to permanent financing.
Pros: Pay interest only during construction, converts to a traditional mortgage.
Cons: More complex application, requires detailed construction plans, two closings (or one for construction-to-permanent).
Best for: New construction ADUs with higher budgets.
5. ADU-Specific Loan Programs
How it works: Specialized lenders offer loans designed specifically for ADU construction.
Pros: Designed for ADU projects, may consider future rental income in qualification.
Cons: Higher rates than traditional options, newer programs with less track record.
Best for: Homeowners who don't qualify for traditional options.
6. Personal Loan or 401(k) Loan
How it works: Unsecured personal loan or borrowing from your retirement account.
Pros: No home collateral required (personal), lower rates than credit cards.
Cons: Higher rates, shorter terms, 401(k) loans risk retirement savings.
Best for: Smaller projects (JADUs, partial funding).
Vision ADU's Financing Partners
We work with multiple lenders who specialize in ADU financing. Our VP of Finance, Iris Pineda, can connect you with the right lender based on your financial situation. This service is complimentary — we want to make ADU ownership accessible.
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Need help finding the right financing? Contact us and we'll connect you with our lending partners.
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