Where is a duplex allowed in Fullerton?

Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Fullerton Municipal Code use tables (read October 2026). Base zones only. General information, not legal advice — check with the city before you apply.

Fullerton's code calls this use “Two-family”. Each row links to the use table it comes from. A zone marked “see note” has a condition in the code, for example upper floors only or a larger lot.

• Standards for this use: § 15.17.030(A) Occupancy restrictions.
• State law: SB 9 (Gov. Code § 65852.21) allows two homes on most single-family lots with a ministerial permit, also where this table says no.
• Not covered here: § 15.55.030 (conditions for special uses, cited for religious institution, private school, childcare center, bed and breakfast, RCFE, retirement complex) is not in the packet; only § 15.55.020 is; C-G (Commercial Greenbelt) is a specific plan with no use table; PRD and P-L lists were read only for these 16 uses. Overlay zones and specific plans can also change the answer.

• Rooming or boarding house
• Church or place of worship
• Growing crops
• Emergency shelter