Contra Costa County CA District Attorney Office

Find Contra Costa County, California district attorney offices, including DA, county, prosecuting, state, and commonwealth attorneys. District attorneys provide information on criminal court cases, public safety, legal cases, and law documents.


Contra Costa County District Attorney 900 Ward Street Martinez CA 94553 925-957-2200


About Contra Costa County District Attorney

The Contra Costa County District Attorney is an attorney who prosecutes criminal cases for the government in Contra Costa County, CA. The District Attorney is part of the Department of Justice and heads the Contra Costa County Prosecutor's Office, staffed with multiple attorneys who act on behalf of the District Attorney. District Attorneys in Contra Costa County take a lead role in multiple phases of a criminal case and exercise a great deal of discretion in how a case is handled. District Attorneys may delegate certain cases, or aspects of cases, to other attorneys in the Contra Costa County DA's Office.

You may contact the District Attorney for questions about:
  • Contra Costa County public criminal records
  • Contra Costa County Court records
  • Criminal investigations and prosecutions
  • Jury selection process in Contra Costa County, CA
  • Grand jury proceedings
Contra Costa County Criminal Records

The DA's Office maintains public records that may be available upon request. These records include Contra Costa County criminal records such as arrest records, police reports, and Contra Costa County Court records and filings.

Criminal Prosecutions

The Contra Costa County District Attorney decides whether or not to prosecute an offender in Contra Costa County, California. The evidence provided by the Contra Costa County Police Department, Contra Costa County Sheriff's Department, or other Local Law Enforcement agency, may or may not be sufficient to move a case forward, and the Contra Costa County DA's Office must evaluate the strength and admissibility of the available evidence before prosecuting the offender.

Contra Costa County Grand Jury

The District Attorney is responsible for presenting evidence to the Contra Costa County Grand Jury, which then decides whether or not there is probable cause for criminal charges. The Contra Costa County DA also determines whether to offer or accept a plea bargain.

Jury Selections & Sentencing

For cases that go to trial in Contra Costa County, the District Attorney, along with the Contra Costa County Public Defender's Office, will select a jury. After jury selection, the District Attorney makes opening statements, presents the government's case for conviction, and makes objections to the Defense Attorney's case. If the jury convicts the individual accused of breaking California law, the Office of the Contra Costa County DA makes recommendations for sentencing. If the jury finds the defendant not guilty, the District Attorney determines whether or not to appeal the case to a higher-level CA Court.