Rules & Permits · 2026
ADU rules & permits by county
California sets the ADU floor — 4 ft setbacks, units to 1,200 sq ft, a 60-day permit clock — but the office that reviews your build, and the local site conditions, change by county. Pick yours.
9 cities: Sacramento, Elk Grove, Folsom, Citrus Heights, Carmichael, Fair Oaks, Orangevale, Rancho Cordova, Galt
Read the rules guide →
6 cities: Roseville, Rocklin, Lincoln, Loomis, Auburn, Granite Bay
Placer County ADU rules →
3 cities: El Dorado Hills, Cameron Park, Placerville
El Dorado County ADU rules →
3 cities: West Sacramento, Davis, Woodland
Yolo County ADU rules →
For the statewide picture — SB 1211, AB 1033, and the 2025 preemption — see California ADU law in 2026.
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