Why Hire Us? 150+ Years' Combined Experience

Learn why our dedicated DUI and criminal lawyers are right for you.

Why We're the Right Choice

Success 12,000+ Criminal Cases Resolved

Over the last 37 years, we’ve helped numerous clients who are just like you.

Meet Our Attorney

Testimonials Our Reviews Say It All

See what previous happy clients have to say about working with our firm.

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We welcome all questions and will answer in a pleasant, helpful manner.

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  • Why Hire Us?

    150+ Years
    Combined Experience

    Our dedicated DUI & criminal defense attorneys will fight for you.

    Why We're the Right Choice[+]
  • Success

    12,000+ Criminal
    Cases Resolved

    We've been helping clients just like you for nearly four decades.

    Meet Our Attorney[+]
  • Testimonials

    Our Reviews
    Say It All

    Read what satisfied clients have to say about working with our team.

    View Our Endorsements[+]
  • Consultation

    To Speak to an
    Attorney, Call Today!

    We are here to help you through this process. Contact us today!

    Free Case Evaluation[+]

Santa Rosa Criminal Defense Attorneys

Serving Sonoma, Napa, Marin, Lake, Mendocino, and Humboldt Counties

Arrested for a DUI or other crime? Get aggressive, professional, and successful help from a DUI lawyer or criminal attorney with the law firm that serves more clients in DUI and criminal cases than any other law firm north of the Golden Gate Bridge. An experienced criminal defense attorney will get the best result possible in your case by helping you generate the best defenses, avoid going to court, protecting your license and job, and acquiring, if necessary, alternatives to jail.

Our Northern California law firm has over 150 years of combined experience handling criminal and DUI cases. We are centrally located with offices in Santa Rosa, Napa, San Rafael, Lakeport, Ukiah, and Eureka. We welcome all questions or inquiries and will answer them in a pleasant, courteous, and helpful manner.

If you have been arrested or are under investigation, call Ronald Dinan & Associates now. We welcome all questions or inquiries and will answer them in a pleasant, courteous, and helpful manner. To speak to an attorney, call us today at (888) 563-6268!

Defense for DUI Charges in Northern California

If you have been arrested for a DUI, contact an experienced DUI attorney as soon as possible. There are a number of steps that can be taken by both you and your attorney to substantially improve your situation. Most likely, you will have to deal with both the criminal court and DMV. Your attorney will explain this to you in detail.

In most cases, we appear in criminal court on behalf of our clients to prevent a DUI matter from interfering with your work, personal obligations, etc. In addition, our representation includes speaking on your behalf and negotiating with DMV hearing officers, judges, and district attorneys.

Get answers to important DUI questions!

  • I have been arrested for a DUI! What do I do now?
  • Now I have a DUI criminal case - what's going on?
  • Can the DMV or the court really take my license?
  • What is the 10 day rule in regards to DUI cases?
  • What issues should I look for in my case?
  • What can an expert DUI lawyer do for me?

To get immediate information regarding the new DUI and DMV laws, call our 24 Hour DUI Helpline for pre-recorded information about likely consequences of a DUI conviction, potential license restrictions/suspensions, and more.

Facing criminal charges? Get the information you need!

  • Investigation: The police are investigating me - should I talk to them? Should I speak to a criminal lawyer first? Understand the two primary reasons why the police want to talk to you!
  • Conviction: Sentencing: Learn the best ways to prepare for sentencing in every criminal case. Discover the 10 best methods to reduce or eliminate jail time! Available jail alternative programs.
  • Drugs: Understand the laws about Drug Possession/Sale, Drug Manufacturing/Cultivation, Paraphernalia, Proposition 215 Medical Marijuana and Compassionate Use, Drug DUI's, Illegal Search and Seizures, Search Warrants, No-Jail Resolutions, Drug Diversion, Rehabilitation.
  • Assault: Get the facts on charges of Spousal Assault, Domestic Violence, Sexual Assault, Violation of Probation, Failure to Appear in Court, Resisting Arrest, and Child Abuse.
  • Theft: Learn about California laws for Commercial/Residential Burglary, Armed Robbery, Fraud, Embezzlement, Shoplifting, Bad Checks, Credit Cards, Identity Theft, White Collar and Cyber Crimes.
  • Other: Get information about DMV Licenses, Fish and Game, Firearms/Weapons, Warrants, Pre-arrest Investigations, Violations of Probation, Failure to Appear in Court, Computer and Internet Crimes.

If you're facing criminal or DUI charges, one of the best decisions you can make is to speak to our attorneys. Our practice concentrates in the counties of Sonoma, Napa, Marin, Lake, Mendocino, and Humboldt, and our six Bay Area offices are centrally located in the cities in which the courthouses are located.

Contact Ronald Dinan & Associates today to get the aggressive and effective defense you need!