Accessory dwelling unit financing — San Jose, CA

Last updated: September 24, 2026

What affects the price

Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

Financing an ADU involves finding a loan product that works for your specific property and budget. Common options include home equity lines of credit, cash-out refinances, or construction loans. You need this when you have the space for a unit but need help covering the upfront investment. Price factors include your credit score, the total loan amount, and current interest rates. Exact pricing confirmed free on the call.

Frequently asked in San Jose

Also serving nearby: Burbank · Santa Clara · Sunnyvale · Fremont · Hayward

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More on this: HUD ADU resources — ADU policy and financing research.

Service area details

Serving all of San Jose — population 969,655; about 5,449 residents per square mile across 177.9 sq mi. ZIP codes covered include 95025, 95101, 95103, 95106, 95108, 95109, 95110, 95111.

Neighborhoods served in San Jose: Downtown San Jose, Willow Glen, The Rose Garden, Japantown, Alviso, Campbell — and every surrounding area.