In September 2021, California legislators passed the California Housing Opportunity and More Efficiency (HOME) Act — more commonly known as Senate Bill 9 (SB 9) — to address California's ongoing housing crisis. In effect since the start of 2022, the law allows for an additional housing unit on parcels zoned for single-family homes without discretionary review or hearing, permitting lot splits and duplexes in neighborhoods formerly devoid of such home types. Come explore the findings from a new analysis by the Terner Center for Housing Innovation that explores how SB 9 is being implemented around California and pinpoints the best and worst practices occurring at the local level.