Contra Costa Superior Court 725 Court Street Martinez, CA 94553. Phone: (925) 608-1000.Find Your Court Forms. Welcome to the Contra Costa County Superior Court Self-Help Resource Center. A written statement from a victim asking the district attorney's office to dismiss a case against a defendant in almost all cases. Learn more about workshops and services in Contra Costa County and the Bay Area that cover a variety of legal topics. 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. The Corrective Affidavit must be completed, and attached to the original or a certified copy of the document that is to be re-recorded. The Contra Costa County District Attorney's office is dedicated to ending the cycle of abuse and stopping domestic violence in our community. How Can A California Crime Conviction Affect Your Future?