Adu estimate — 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.
About this service
An estimate is a preliminary assessment of what your ADU project might cost before the final design is locked in. It helps you decide if your budget aligns with the size of the unit you want. Costs vary based on whether you choose a detached structure or a garage conversion. It is a starting point for planning. Exact pricing confirmed free on the call.
Frequently asked in Santa Maria
What is the construction cost for an accessory dwelling unit in Santa Maria?
Can I build a backyard accessory dwelling unit in Santa Maria?
Are prefabricated accessory dwelling units a good choice in Santa Maria?
Which ADU company should I choose in Santa Maria?
What's the cost to build an accessory dwelling unit?
Can I rent out an accessory dwelling unit in Santa Maria?
Renting out an accessory dwelling unit is a primary reason many homeowners in Santa Maria choose to build them. The city generally permits rentals, but it's important to be aware of local ordinances. An ADU can be a great source of rental income. We help you get the construction process handled efficiently. Let's discuss your ADU plans.
What permits are needed for an ADU 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 Santa Maria, Tepesquet Village, Miller, Rice Ranch, West Main — and every surrounding area.
Areas we serve
Browse by state, then city.
California (3)
All of California · Costa Mesa · Jurupa Valley · Santa Maria