ADU rules in Florin, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Florin ADUs are regulated by Sacramento County Zoning Code §5.4.5 (Residential Accessory Structures and ADUs) and the state ADU statute (Gov. Code §65852.2). The County allows one ADU plus one JADU on a single-family lot, with detached ADUs typically capped at 850 sq ft (1 bedroom) or 1,000 sq ft (2+ bedrooms).
Section 5.4.5 establishes Sacramento County's ADU development standards consistent with state law. Detached ADU maximums are 850 sq ft for studios/1-bedroom and 1,000 sq ft for 2+ bedrooms; attached ADU may equal up to 50% of the primary dwelling or 1,200 sq ft, whichever is less, except statutory minimums override (state law guarantees up to 800 sq ft regardless of local rules). Setbacks are 4 ft minimum side/rear for detached ADUs, with 16-ft height limit (25 ft if attached). No additional parking is required if within ½ mile of transit. JADUs (junior ADUs) up to 500 sq ft are allowed within the existing primary dwelling.
Construction without permits triggers stop-work, after-the-fact permit fees, and possible demolition for non-conforming work. ADU rentals shorter than 30 days require a Short-Term Rental Permit and are limited to ADUs built before 1/1/2020.
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Florin, CA
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Side-by-side rule comparisons with other cities in Sacramento County.
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