ADU rules in Pico Rivera, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Pico Rivera approves ADUs ministerially under state law (Gov. Code 66310-66342). Detached units run 800 to 1,000 square feet, attached ADUs up to 50% of the primary home, with a 4-foot side and rear setback and no owner-occupancy requirement for standard ADUs.
One ADU is allowed on any residentially zoned lot with an existing or proposed dwelling. A detached ADU may range from 800 to 1,000 square feet and cannot exceed 16 feet or one story; an attached ADU is capped at 50% of the primary dwelling (minimum 800 square feet) and may reach 24 feet and two stories. The minimum efficiency unit is 150 square feet. New ADUs keep a 4-foot side and rear setback and a 10-foot separation from other occupied structures. One parking space per ADU or bedroom is required, with exemptions within a half-mile of transit or for conversions. Standard ADUs carry no owner-occupancy mandate; rentals must exceed 30 days.
Building without a permit, exceeding size or height caps, or renting short-term (30 days or less) can trigger stop-work orders, corrections, or code enforcement action.
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Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle adu rules.
See how Pico Rivera's adu rules rules stack up against other locations.
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