Adu construction — 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
Frequently asked in Santa Maria
What are the typical costs for an affordable accessory dwelling unit in Santa Maria?
What is the general accessory dwelling unit cost in Santa Maria?
What ADU services are available in Santa Maria?
What does an accessory dwelling unit mean in terms of housing options?
Are there any accessory dwelling unit grants available in California?
What is the ADU permit process like in Santa Maria?
Can I get a prefabricated accessory dwelling unit 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, Village at Shaw, Northwest Santa Maria, Southwest Santa Maria, Fairway — and every surrounding area.
Areas we serve
Browse by state, then city.
California (3)
All of California · Costa Mesa · Jurupa Valley · Santa Maria