ADU rules in Corona, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Corona permits ADUs in residential zones per CMC Chapter 17.85 and California state law. Detached ADUs up to 1,200 sq ft, JADUs up to 500 sq ft. Height 16 ft detached, 25 ft attached. Setbacks reduced to 4 feet. No short-term rental of ADUs.
Corona regulates ADUs under Chapter 17.85 of the Municipal Code, recently amended via Ordinance No. 3410. Detached ADUs may be up to 1,200 square feet, attached up to 50% of primary dwelling or 1,200 sq ft. JADUs limited to 500 sq ft within existing home. Detached ADU height limited to 16 feet; attached may reach 25 feet. Side and rear setbacks reduced to 4 feet. Parking requirements relaxed per state law. Permit fees reduced and in some cases waived. ADUs cannot be used as short-term rentals — state law requires 31+ day rental terms. JADUs require owner-occupancy of either the primary unit or JADU.
ADU without permit: stop-work order. STR use of ADU: zoning violation. Non-compliant size/height: correction required. JADU owner-occupancy violation: enforcement action.
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Side-by-side rule comparisons with other cities in Riverside County.
See how other cities in Riverside County handle adu rules.
See how Corona's adu rules rules stack up against other locations.
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