Accessory dwelling unit construction cost — Daly City, CA
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.
About this service
The cost of building an ADU depends on your choice of materials, the square footage, and whether you are doing a garage conversion or a new detached build. Site access and utility upgrades also play a big role in the final bill. Exact pricing confirmed free on the call.
Frequently asked in Daly City
How do I find accessory dwelling unit builders in Daly City?
What is a detached accessory dwelling unit?
Who is a reliable ADU builder in California?
What are affordable accessory dwelling units?
How do I get an ADU quote in Daly City?
What are the benefits of homes with in-law suites?
Homes with in-law suites offer flexibility for multigenerational living or rental income. They provide a separate, private space for family or tenants. This can increase your home's value and utility. Discuss your ADU options with a pro.
What is a modular accessory dwelling unit?
Also serving nearby: San Mateo · Oakland · Berkeley · Richmond · Hayward
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Daly City — population 99,833; about 13,070 residents per square mile across 7.6 sq mi. ZIP codes covered include 94014, 94015, 94016, 94017.
Neighborhoods served in Daly City: Serramonte, Westlake, Broadmoor, Pacifica Manor, Hillside — and every surrounding area.
Areas we serve
Browse by state, then city.