Senate Bill 9 is a 2021 California state law that allows up to 4 homes in most single-family zones, regardless of local zoning. You can use SB9 to split your lot, add a 2nd home to a lot, or both (split lot and have 2 homes on each lot for a total of 4 homes). SB9 takes effect on January 1, 2022. SB9 - Senate Bill 9 Summary ■  SB9 makes it possible for homeowners in CA to divide their property into two lots. It allows two homes to be... [read more]