CA · State directory
California ADU rules
Official accessory dwelling unit regulations for 120 jurisdictions in California, plus statewide law.
Not sure which city yet?
We have read the ordinances for 120 California cities and lined them up side by side: detached vs internal, size limits, owner occupancy, and approval process.
Statewide ADU law
California has state-level ADU legislation that applies across local jurisdictions. Local rules below may add requirements on top of state law.
- hcd.ca.govOfficial sourceVerified September 2026https://www.hcd.ca.gov/building-standards/adu
- hcd.ca.govOfficial sourceVerified October 2026https://www.hcd.ca.gov/building-standards/adu/handbook
- leginfo.legislature.ca.govOfficial sourceVerified October 2026https://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?lawCode=GOV&division=1.&title=7.&part=&chapter=13.&article=
Cities
Alameda2 sources · verified October 2026Anaheim4 sources · verified October 2026Bakersfield4 sources · verified October 2026Berkeley5 sources · verified October 2026Burbank3 sources · verified October 2026Burlingame3 sources · verified October 2026Carlsbad5 sources · verified October 2026Carson3 sources · verified October 2026Chino3 sources · verified October 2026Chula Vista3 sources · verified October 2026Concord3 sources · verified October 2026Corona3 sources · verified September 2026Coronado5 sources · verified October 2026Costa Mesa5 sources · verified October 2026Daly City5 sources · verified October 2026Dana Point4 sources · verified October 2026Downey2 sources · verified October 2026El Cajon3 sources · verified October 2026El Cerrito5 sources · verified October 2026El Monte3 sources · verified October 2026Elk Grove4 sources · verified September 2026Encinitas5 sources · verified October 2026Escondido4 sources · verified September 2026Fairfield2 sources · verified October 2026Folsom3 sources · verified October 2026Fontana3 sources · verified October 2026Fremont5 sources · verified September 2026Fresno2 sources · verified September 2026Fullerton3 sources · verified October 2026Garden Grove4 sources · verified September 2026Glendale5 sources · verified September 2026Hayward3 sources · verified September 2026Hemet3 sources · verified October 2026Hesperia2 sources · verified October 2026Huntington Beach5 sources · verified October 2026Inglewood5 sources · verified October 2026Irvine4 sources · verified October 2026Jurupa Valley3 sources · verified October 2026La Mesa3 sources · verified October 2026Laguna Niguel3 sources · verified October 2026Lake Forest3 sources · verified October 2026Lancaster3 sources · verified September 2026Long Beach4 sources · verified October 2026Los Angeles4 sources · verified October 2026Menifee4 sources · verified October 2026Mission Viejo2 sources · verified October 2026Modesto2 sources · verified September 2026Monterey5 sources · verified October 2026Moreno Valley2 sources · verified October 2026Murrieta3 sources · verified October 2026Newport Beach4 sources · verified October 2026Norwalk3 sources · verified October 2026Oakland4 sources · verified October 2026Oceanside5 sources · verified October 2026Ojai6 sources · verified October 2026Ontario4 sources · verified September 2026Orange4 sources · verified October 2026Oxnard4 sources · verified September 2026Palm Springs4 sources · verified October 2026Palmdale2 sources · verified September 2026Pasadena5 sources · verified October 2026Pismo Beach3 sources · verified October 2026Pittsburg2 sources · verified October 2026Pomona3 sources · verified September 2026Rancho Cucamonga2 sources · verified September 2026Rancho Santa Margarita2 sources · verified October 2026Rialto2 sources · verified October 2026Richmond4 sources · verified October 2026Riverside3 sources · verified October 2026Roseville3 sources · verified September 2026Sacramento4 sources · verified October 2026Salinas3 sources · verified October 2026San Bernardino3 sources · verified September 2026San Carlos3 sources · verified October 2026San Clemente3 sources · verified October 2026San Diego4 sources · verified October 2026San Francisco5 sources · verified October 2026San Jose5 sources · verified October 2026San Juan Capistrano2 sources · verified October 2026San Marcos3 sources · verified October 2026San Rafael4 sources · verified October 2026Santa Ana4 sources · verified October 2026Santa Barbara4 sources · verified October 2026Santa Clara3 sources · verified October 2026Santa Clarita3 sources · verified October 2026Santa Cruz4 sources · verified October 2026Santa Maria2 sources · verified October 2026Santa Monica4 sources · verified October 2026Santa Rosa4 sources · verified September 2026Santee3 sources · verified October 2026Simi Valley3 sources · verified October 2026South Gate4 sources · verified October 2026Stockton2 sources · verified July 2026Sunnyvale4 sources · verified September 2026Temecula3 sources · verified October 2026Thousand Oaks2 sources · verified October 2026Torrance3 sources · verified September 2026Union City2 sources · verified October 2026Upland5 sources · verified October 2026Vallejo2 sources · verified October 2026Ventura5 sources · verified October 2026Victorville3 sources · verified October 2026Visalia5 sources · verified October 2026Vista2 sources · verified October 2026West Covina4 sources · verified October 2026Westminster4 sources · verified October 2026
Counties & regions
Alameda County2 sources · verified September 2026Fresno County3 sources · verified September 2026Los Angeles County6 sources · verified September 2026Monterey County5 sources · verified September 2026Nevada County4 sources · verified October 2026Orange County5 sources · verified September 2026Riverside County5 sources · verified October 2026Sacramento County3 sources · verified October 2026San Bernardino County5 sources · verified October 2026San Diego County3 sources · verified September 2026Santa Barbara County4 sources · verified September 2026Santa Clara County3 sources · verified September 2026Sonoma County4 sources · verified September 2026Ventura County4 sources · verified September 2026
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