The Eviction Lab’s recently released dataset of evictions in the United States provides rich opportunities for exploring the effect of state and local policies on eviction rates. Just cause eviction ordinances—local laws that outline what constitutes grounds for eviction—have gained traction as a policy solution for addressing the eviction crisis. This paper analyzes the relationship between just cause eviction ordinances and eviction rates and eviction filing rates in four California cities. A difference-in-differences matched case model suggests that there is a statistically significant, large, and negative difference between eviction rates and eviction filing rates before and after the passage of just cause eviction ordinances in the four treatment cities, as compared to the difference in these rates before and after the passage of just cause eviction ordinances in matched control cities. Cities that implemented just cause eviction laws experienced lower eviction, by 0.808 percentage points, and eviction filing rates, by 0.780 percentage points, than those that did not.