Judge Delia Trevino

Judge Delia Trevino is an elected judge presiding over serious criminal matters at the Hayward Hall of Justice in Alameda County Superior Court. Her docket includes some of the most serious offenses in the California criminal code: murder, sexual assault, human trafficking, and pimping cases. News coverage from outlets including the East Bay Times, Berkeleyside, the Mercury News, and the Davis Vanguard confirms her courtroom has handled high-profile, complex criminal proceedings that draw sustained public and media attention. The case data available reflects a judge who issues sentences across a wide spectrum of outcomes. Documented results include a 40-years-to-life sentence for murder during a marijuana deal, as well as probationary sentences in cases she determined warranted a more nuanced disposition. This range of outcomes, drawn from actual reported cases, indicates that Judge Trevino evaluates each matter on its specific facts rather than applying a uniform sentencing posture. Because no attorney observations or written ruling analyses are available in this dataset, the intelligence in this profile is drawn exclusively from biographical court records and news coverage. Attorneys should treat this profile as a starting-point orientation rather than a comprehensive behavioral map, and should conduct independent research into her recent rulings before appearing in her courtroom.

Given that Judge Trevino presides over serious felony criminal matters — including murder, sexual assault, and human trafficking — attorneys must arrive with thorough command of the facts and procedural posture of their case. The documented range of sentencing outcomes, from probation to 40-years-to-life, confirms that factual nuance and individualized argumentation matter in her courtroom. Counsel should develop detailed sentencing memoranda that address the specific circumstances of the offense and the defendant, rather than relying on boilerplate arguments. Because her cases have drawn coverage from multiple regional news outlets, attorneys should anticipate that high-profile matters before her will be subject to public scrutiny. Professionalism, precision, and decorum in all filings and oral arguments are essential. Counsel handling preliminary hearings — as documented in the stranger rape case covered by Berkeleyside — should be prepared for rigorous examination of the evidentiary record at that stage. With no attorney observation data available, counsel cannot rely on this profile to predict Judge Trevino's preferences on procedural motions, evidentiary rulings, or courtroom management style. Independent outreach to attorneys who have appeared before her in Hayward, and review of any available court minutes or transcripts from her department, is strongly recommended before a first appearance.

• critical

  Research Recent Rulings Independently

  No ruling analyses are available in this dataset. Before any appearance, attorneys should review court minutes, transcripts, and any published decisions from her department through Alameda County Superior Court records and Trellis.

• critical

  Prepare Detailed, Individualized Sentencing Memoranda

  Documented outcomes span from probation to decades-long prison terms. A thorough, fact-specific sentencing brief addressing the unique circumstances of the offense and defendant is essential.

• important

  Review Preliminary Hearing Standards for Sexual Assault Cases

  A stranger rape preliminary hearing in her courtroom was covered by Berkeleyside, indicating she handles these proceedings. Counsel should be prepared for rigorous evidentiary scrutiny at the preliminary hearing stage.

• important

  Consult Attorneys with Prior Appearances Before Her

  The absence of attorney observation data in this profile means firsthand accounts from colleagues who have appeared in her Hayward courtroom are the most reliable supplemental intelligence available.

• Nice

  Monitor Media Coverage of Active Cases

  Her cases have been covered by the East Bay Times, Berkeleyside, Mercury News, and Davis Vanguard. Tracking coverage can provide insight into how proceedings unfold and what issues draw judicial attention.

• ›Maintain strict professionalism in all filings and oral argument — her courtroom handles the most serious felony matters and has drawn sustained regional media attention.
• ›Arrive fully prepared on the facts of your case; her docket of murder, sexual assault, and human trafficking cases reflects a courtroom where factual precision is essential.
• ›Do not assume a uniform sentencing posture — documented outcomes range widely, so tailor all sentencing arguments to the specific facts rather than relying on general characterizations.
• ›Be prepared for substantive engagement at preliminary hearings, as news coverage documents her handling of contested preliminary proceedings in serious felony cases.