Cost to build accessory dwelling unit — 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
When calculating the budget for a secondary unit, consider the costs for architectural design, permits, materials, and labor. Custom designs and high-end interior finishes will push your budget higher, while standardized layouts can keep costs more predictable. Exact pricing confirmed free on the call.
Frequently asked in Daly City
What's involved in an emergency ADU project in Daly City?
How do I find an accessory dwelling unit contractor in Daly City?
What are the permit requirements for an ADU in Daly City?
What are the benefits of ADU housing in Daly City?
What are the cost considerations for an accessory dwelling unit construction in Daly City?
What makes a backyard accessory dwelling unit a good choice in Daly City?
Are prefabricated accessory dwelling units suitable for Daly City?
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, Park Merced, Hillside — and every surrounding area.
Areas we serve
Browse by state, then city.