To request a hearing to establish or modify child custody or visitation, you must file a Request for Order. The Court is currently open for in-person filings from am – pm.Resources and information to help you navigate your court case, including step-by-step guides for following procedures and help with understanding your options. You do not need to appear in person at the courthouse unless the court requires you to do so. If you have a court appearance for drunk driving, domestic violence, or other charges in Contra Costa County, you can find out more about what to expect below. Most trials last 3-7 days, but some may go longer. All trials must be in the district court. Having lived over 10 years in California I was finally selected for jury duty at the Martinez Superior Court in Contra Costa last week. The court will designate a service provider for each complex litigation case. Daniel Horowitz, a trial expert, has led over 200 jury trials as lead counsel.