ADU rules in Daly City, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Daly City permits ADUs and JADUs in all residential zones per state law. ADUs cannot be used as short-term rentals. Detached ADUs up to 800 sq ft or 50% of main dwelling, 16 ft max height, 4-ft rear/side setbacks.
Daly City allows ADUs per California Government Code §65852.2 (AB 68/881/2221). Detached ADUs are limited to 800 sq ft or 50% of primary dwelling floor area, whichever is less, with a 16-foot height limit (18 ft within half mile of major transit). Attached ADUs may be up to 50% of primary dwelling or 800 sq ft. JADUs are limited to 500 sq ft. Standard setbacks are 4 feet from rear and interior side property lines. ADUs must be rented for terms longer than 30 days — no short-term rentals per Ordinance No. 1440. Owner-occupancy requirements no longer apply under state law.
Unpermitted ADU construction is subject to code enforcement and penalty fees.
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Side-by-side rule comparisons with other cities in San Mateo County.
See how other cities in San Mateo County handle adu rules.
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