Land Use & Zoning

An accessory dwelling unit (ADU) on a single-family lot in California:

ARequires a conditional use permit in all jurisdictions
BIs prohibited in agricultural zones statewide
CMust be permitted by right under state law in most residential zones✓ Correct
DCannot exceed 400 square feet statewide

Explanation

California state law (Government Code §65852.2) requires local jurisdictions to ministerially approve ADUs in most residential zones as a by-right use, aimed at increasing housing supply.

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