Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
About this service
Financing an ADU involves finding a loan product that uses your home's equity or projected rental income to fund the build. You need this if you don't have the full cash amount upfront. Options include renovation loans, home equity lines of credit, or personal loans. Exact pricing confirmed free on the call.
Frequently asked in Santa Maria
What are the best ADU options for Santa Maria homeowners?
What's the cost to build an accessory dwelling unit in Santa Maria?
How do I get an ADU permit in Santa Maria?
What are the requirements for accessory dwelling unit construction in Santa Maria?
Where can I find an ADU near me in Santa Maria?
What's the average ADU cost in Santa Maria?
Are there ADU housing options in Santa Maria?
Also serving nearby: San Buenaventura Ventura · Bakersfield · Oxnard · Thousand Oaks · Simi Valley
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Santa Maria — population 109,987; about 4,821 residents per square mile across 22.8 sq mi. ZIP codes covered include 93454, 93455, 93456, 93457, 93458.
Neighborhoods served in Santa Maria: Old Town, Central, Pacific Crest, Town Center, Westgate — and every surrounding area.
Areas we serve
Browse by state, then city.
California (3)
All of California · Costa Mesa · Jurupa Valley · Santa Maria
