Best accessory dwelling unit — Santa Maria, CA
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.
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Frequently asked in Santa Maria
What are some options for homes with mother-in-law suites in Santa Maria?
Are there 24-hour ADU services available in Santa Maria?
How do I find accessory dwelling unit companies in Santa Maria?
Can I get an accessory dwelling unit in Massachusetts?
What are the benefits of a prefab ADU in Santa Maria?
What is the accessory dwelling unit permit cost in Santa Maria?
What is an accessory dwelling unit (ADU) in Santa Maria?
An accessory dwelling unit (ADU) in Santa Maria is a secondary, independent living unit on a single-family residential lot. It can be attached to or detached from the primary dwelling and includes its own kitchen, bathroom, and sleeping area. These units provide flexibility for housing needs. We help you find local experts to build yours.
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 Santa Maria, Central, North Santa Maria, West Santa Maria, South Santa Maria — and every surrounding area.
Areas we serve
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California (3)
All of California · Costa Mesa · Jurupa Valley · Santa Maria