Attorney Overview - Law Office of Derek Ewin

Law Office of Derek R. Ewin
201 North Civic Drive
Suite 225
Walnut Creek CA 94596

Office: 925-262-8406
Fax: 925-372-9436
Cell: 925-209-6616
Fax: 925-262-8398
Email:This email address is being protected from spambots. You need JavaScript enabled to view it.



Derek Ewin has a wealth of Criminal Law experience including more than thirteen years in County Prosecutors’ Offices. Eleven of those years Mr. Ewin worked as a Deputy District Attorney in Contra Costa County. As a Deputy DA, Mr. Ewin prosecuted thousands of cases, including but not limited to: Robbery, Homicide, Drunk Driving/DUI, Possession, Possession for Sale and Sale of Illegal Drugs, Three Strikes, Theft, Burglary, Auto Theft, Domestic Violence, Assault with Deadly Weapon, Illegal Firearms, Vandalism, Sex Crimes, Stalking, Gang cases, Arson and Drive By Shootings. At the DA's Office, Mr. Ewin worked in several divisions including Misdemeanors, Felony Trial Team, Calendar, Juvenile, Felony Filing, Domestic Violence/Sexual Assault, Preliminary Hearings and Homicide/Gangs. As a Criminal Defense Attorney, Mr. Ewin has handled numerous adult and juvenile cases in the Greater San Francisco Bay Area. He has successfully defended hundreds of misdemeanor, felony and drunk driving cases.

Mr. Ewin’s extensive experience includes Jury Trials, Court Trials, Preliminary Hearings, Motions to Suppress, Motions to Dismiss, Discovery Motions, Pre-trial Negotiations, Plea Bargaining, Sentencing Hearings, Probation Violation Hearings, Investigations, Mental Defenses, Victim Representation, DMV License Suspension Hearings and Post Conviction Reductions and Dismissals. He has also lectured in drunk driving, criminal law, legal updates and constitutional law at various locations including schools, police academies, and police agencies. In law school, Mr. Ewin focused on Criminal Law and Trial Practice. He tutored legal writing and competed in the National Moot Court competition.

Mr. Ewin has a reputation of integrity, honesty and skill with local prosecutors, defense attorneys, judges and court staff. Mr. Ewin works tirelessly to help his clients get their lives back in order and to get them free of the Criminal Justice System. Clients and Former Clients continually call and write to tell Mr. Ewin how his representation of them has changed their lives for the better.

Mr. Ewin has appeared in several news media, including NBC News, CBS News, SF Weekly, the Mercury News, KTVU Channel Two, the San Francisco Chronicle, the Contra Costa Times and more.

Mr. Ewin was born and raised in the East Bay, where he continues to reside with his family. He is an avid dirt bike rider, wake-boarder, shooter and outdoors man. He is also involved as a teacher at his local church.


University of California at Los Angeles
B.A. in Political Science

King Hall School of Law
University of California at Davis
Juris Doctorate


Yolo County District Attorney's Office
Certified Law Clerk
Major Narcotic Vender Team
Traffic Violation Team

November 1993-January 1994
Ventura County District Attorney's Office
Misdemeanor Team

Contra Costa County District Attorney's Office
Deputy District Attorney

94-95 Misdemeanor Team
95-96 Felony Team
97 Family Support
98 Domestic Violence/Felony Team
99 Felony Calendar Team
00 Felony Filing
01-04 Domestic Violence/Sexual Assault Team
04-05 Gang/Homicide Team

2005 - Present

Law Office of Derek R. Ewin

California State Bar – 1993
California Broker’s License - 2005

The Law Office of Derek R. Ewin serves clients throughout the San Francisco Bay Area, including Walnut Creek, Danville, San Ramon, Alamo, Concord, Pittsburg, Bay Point, Antioch, Brentwood, Richmond, Kensington, Martinez, Orinda, Lafayette, Oakley, Pinole, San Pablo, Clayton, Crocket, Pleasant Hill, Moraga, Discovery Bay, Kensington, El Cerrito, Hercules, El Sobrante, San Francisco, Oakland, Alameda, Benicia, Vallejo, Santa Rosa, Fremont, Dublin, Hayward, Pleasanton, San Mateo, Daly City, Pacifica, Petaluma, Rohnert Park, Redwood City, San Anselmo, San Bruno, San Carlos Napa, Sonoma, Vacaville, Fairfield, Albany, American Canyon, Livermore, San Leandro, San Rafael, Santa Clara, Sausalito, South San Francisco, East Palo Alto, Emeryville, Fairfax Union City, San Jose, Sunnyvale, Menlo Park, Bayside, Berkeley, Palo Alto, Foster City, Corte Madera, Half Moon Bay, Healdsburg, Larkspur, Mill Valley, Milpitas, Mountain View, Newark, Novato, Brisbane, Burlingame, Campbell, East Bay, Silicon Valley, and Napa Valley, as well as Contra Costa, Alameda, San Francisco, San Mateo, Solano, Napa, Santa Clara, Marin, Santa Cruz, Monterey, San Joaquin, Yolo and Sonoma counties.


5 star rating based on 25 client reviews

Client Testimonials

Client Review:
There are literally a handful of people for whom I would take a bullet. This list includes my family and a few friends. Honestly, in my wildest dreams, I would never have contemplated that I would add an acquaintance, much less a lawyer to this list.

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