Are you looking to sue your roommate in a California small claims court? In this article, learn about: Common types of small claims lawsuits between roommates. What to do before suing your roommate in small claims. The maximum amount you can sue your roommate for in small claims court. How much it costs to sue your roommate in small claims. How to file a small claims lawsuit against your roommate. What to expect during a small claims hearing. Mediation as an option of resolving your dispute.