Ex parte applications will be accepted at am Monday - Friday, except court holidays. This HowTo Guide addresses the steps for filing and serving motions in general civil cases in Contra Costa County Superior Court.You must fill out an Answer, serve the plaintiff, and file your Answer form with the court. Generally, this is due within 30 days after you were served. Unfortunately, efiling of motions in Contra Costa Superior Court is not directly available for individuals and nonregistered attorneys. Information about filing court documents in Contra Costa County, California. Services: Court locations, Contact information, View court directory. This SmartRules Guide covers generally applicable rules of motion practice in the Contra Costa County Superior Court. Resources to help attorneys learn the new e-filing system in use at the Superior Court of Contra Costa County. Get the help you need.