Walnut Creek Criminal Defense and DUI Attorney

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

Office: 925-262-8406
Cell: 925-209-6616
Fax: 925-262-8398
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Welcome to the Law Office of Derek R. Ewin, where we use our Extensive Experience in the Criminal Justice System to help our clients get the Best Possible Results.

Derek Ewin has been working in Criminal Law continually since 1992. He has experience in three different prosecutor’s offices and as a defense attorney, and he has tried over 100 cases, ranging from Drunk Driving and Traffic cases to Complex Robbery, Vehicular Manslaughter and Murder charges. Mr. Ewin has handled thousands of cases in his career and as a result is well respected by District Attorneys, Judges, Private Attorneys and Court Staff.

Serving the Greater San Francisco Bay Area

Our firm handles all criminal law cases, including Misdemeanors, Felonies and Drunk Driving for Adults and Juveniles, at any stage of the proceedings, including if:

(1) you believe you are being investigated,
(2) you have been arrested,
(3) you have been charged,
(4) you have already been to court,
(5) you have violated probation,
(6) you want to clean up your prior record, or
(7) you are a victim or a witness and you feel you need representation.

Don’t wait. Contact us as soon as possible (24 hours a day, 7 days a week)

(925) 262-8406


Visa and Master Card are accepted

For more information about Derek Ewin, the types of cases we handle, the jurisdictions we practice in and criminal law in general please review this web site or give us a call.


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.

Client Testimonials

Posted by: Craig, a Domestic Violence client

Client Review:
Derek is very thorough and an expert in his field and went beyond the call of duty. I would recommend him without hesitation.

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Law Office of Derek R. Ewin, Attorneys & Lawyers - Criminal, Walnut Creek, CA