A homeowner reviewing financing options for an ADU on their property.

The Smart Homeowner’s Guide to Financing an ADU

March 24, 20251 min read

Building an Accessory Dwelling Unit (ADU) is an excellent way to generate passive income and increase your property’s value. However, financing the project can be a challenge. Understanding your options will help you make an informed decision that aligns with your financial goals.

Best Financing Options for ADUs

1. Home Equity Line of Credit (HELOC)

  • Tap into your home’s equity with flexible borrowing.

  • Pay interest only on the amount you use.

  • Best for homeowners with significant home equity.

2. Cash-Out Refinance

  • Refinance your mortgage to access cash at a potentially lower interest rate.

  • Extends repayment but provides upfront capital.

3. Construction Loans

  • Tailored for building projects, often converting to a permanent mortgage.

  • May have stricter qualification requirements.

4. Government Grants & Incentives

  • Some states offer ADU-specific grants or low-interest loans.

  • Research local housing programs for financial assistance.

How to Assess Your ADU's ROI

Before financing, consider your potential return:

  • Rental Income: A unit renting for $1,500/month brings in $18,000 annually.

  • Construction Cost: If your ADU costs $100,000, you recoup your investment in about 5.5 years.

  • Ongoing Expenses: Factor in property taxes, maintenance, and insurance.

A solid financing plan ensures your ADU is a smart financial move.


Thinking of building an ADU? Learn more about Why The ADU Process Takes So Long? How to Speed It Up in our blog.


Don’t let financing hold you back. If you’re ready to explore the benefits of building an ADU, book a call with us today.

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Cash Flow My ADU is dedicated to educating homeowners about the financial and practical benefits of adding Accessory Dwelling Units (ADUs) to their properties. With expert guidance on design, zoning, and investment opportunities, Cash Flow My ADU empowers property owners to make informed decisions that boost value and generate additional income.

Cash Flow My ADU

Cash Flow My ADU is dedicated to educating homeowners about the financial and practical benefits of adding Accessory Dwelling Units (ADUs) to their properties. With expert guidance on design, zoning, and investment opportunities, Cash Flow My ADU empowers property owners to make informed decisions that boost value and generate additional income.

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