ADU costs across California
Build cost, monthly rent, and payback vary by up to 45% across California. Every card below links to a city-specific page with unique cost drivers, permitting notes, typical lot constraints, and a pre-filled calculator. We currently track 25 California markets.
Bay Area ADU markets.
Highest build costs in California but also the strongest rents. Oakland and Fremont produce the best yields; San Francisco is best for keeping housing in the family.
Sacramento ADU markets.
California's most ADU-friendly major market. Fastest permits, pre-approved plan library, and strong payback math.
Los Angeles metro ADU markets.
More ADU permits issued than anywhere else in North America. Huge variance in cost and rent by neighborhood — check the city pages.
Orange County ADU markets.
Strong rents and large lots. Irvine and Huntington Beach command coastal premiums; Anaheim and Santa Ana offer the best yield math.
San Diego ADU markets.
California's most builder-friendly ADU market. The ADU Bonus Program allows multiple ADUs on qualifying lots.
Inland Empire ADU markets.
Lowest construction costs in coastal-adjacent California. Payback windows often beat Bay Area markets despite lower rent.
Central Valley ADU markets.
Lowest absolute build costs in urban California. Best for patient owners and multigenerational housing budgets.
Central Coast ADU markets.
Coastal rent premium with moderate costs. Ventura offers the best balance; Santa Barbara commands highest rent but longest permits.
Don't see your city?
The statewide California calculator covers every ZIP. Drop yours in and see your numbers.