Stewardship Capital

ADU Financing in California: How to Pay for an Accessory Dwelling Unit

An ADU is a second, smaller home on the same lot as your main home. Many California owners build one for family, for rent or for extra space. This page explains the common ways to pay for one, what lenders look at and how the process works.

What is an ADU?

ADU stands for accessory dwelling unit. It is a small home with its own kitchen, bath and sleeping area. It sits on the same lot as your main home. It can be a backyard cottage, a garage conversion or a unit attached to the house. A junior ADU, or JADU, is a smaller unit built inside the walls of the existing home.

California state law makes ADUs easier to permit than they used to be. Your city or county still has its own steps and fees, so start with your local planning office.

How can I pay for an ADU?

There is no single best way. The right choice depends on how much equity you have, your current loan and the cost of the project. Here are the common paths.

Can I use a cash-out refinance for an ADU?

Yes, often. A cash-out refinance replaces your current mortgage with a new one and gives you cash from your equity. It can make sense when your current loan is not one you want to keep. It does not make sense when your current loan has terms worth keeping. Stephen compares both sides with you. See our Refinance page for more.

Can I use a HELOC for an ADU?

Yes, in many cases. A HELOC is a line of credit on your home. You draw money as the bills come due. It leaves your first mortgage in place. Learn more on our HELOC page.

Is there a loan that finances the build and the home together?

Some programs do. Renovation loans and construction loans can fund the work based on what the home will be worth when the work is done. Not every renovation program allows an ADU, and the rules vary by program and investor. Stephen confirms what fits before you sign a contractor.

Can ADU rent help me qualify?

Sometimes. Certain programs let a lender count part of the expected rent from an ADU as income. Others do not. The rules vary by program and investor, and they often require a lease or an appraisal rent opinion. Do not count on rent until Stephen has confirmed how it applies to your file.

What does a lender look at for an ADU loan?

The lender wants to know that the project is real, legal and can be finished.

• Your income, credit and the equity in your home
• Plans, permits and a signed budget or contractor bid
• The contractor's license and insurance
• An appraisal that may include the value after the ADU is built

If funds are paid out in stages, an inspector may check the work before each payment.

What if I want to buy a home that already has an ADU?

Lenders and appraisers look closely at whether the ADU was permitted and whether it is legal to count. An unpermitted unit can cause trouble for the loan and the appraisal. Ask for permit records early. Realtors can help by gathering them before the offer goes far. Our Buy a Home page explains the buying steps.

What costs should I plan for besides the build?

The build itself is only part of the budget. Plan for city or county permit and impact fees, design and engineering, and utility connections. Add landscaping and a cushion for surprises. Some programs let certain soft costs be part of the loan budget, and others do not. Ask Stephen before you spend, so you know which costs the loan can cover and which you pay from savings.

Where do I start?

Start with a simple budget and a call to your city or county planning office. Then talk with Stephen before you hire a builder. A short talk about your equity, your current loan and your plan can save weeks later. Loan limits depend on the county, so check loan limits by county too.

This is not a quote, a commitment to lend or an offer of credit. Stephen Chakerian, NMLS #2193331 | Stewardship Capital, a team of Barrett Financial Group, L.L.C., NMLS #181106 | Equal Housing Opportunity.