Joseph Damien O'Sullivan
Criminal Defense · Lafayette · Contra Costa County
Bar #67055 · Admitted 1975
Identity verified · View the record →
Indexed from official State Bar of California records · Identity verification · Updated regularly
The RegistryCounty Record · California
Searching for a criminal defense lawyer in Contra Costa County? Counsel for the accused: from arraignment through trial and record clearance. This page indexes the county's criminal defense coverage from the State Bar of California's official roll, with identity-verification markers where available.
An East Bay county of more than a million residents stretching from the Carquinez Strait refineries to the Highway 4 and 680 suburbs; the Wakefield Taylor Courthouse in Martinez anchors its civil calendars. Venue for most criminal defense matters arising in the county lies with the Superior Court of California, County of Contra Costa, seated at Martinez.
Deadlines shape these cases before merits do · most misdemeanors: one year to charge; most felonies: three years (Cal. Penal Code §§ 799–802). Charging deadlines scale with the offense: crimes punishable by death or life imprisonment, and embezzlement of public money, may be prosecuted at any time (Cal. Penal Code § 799). After arrest, arraignment must generally occur within 48 hours (Cal. Penal Code § 825).
This page is the Contra Costa County chapter of the registry's statewide record · Criminal Defense Lawyers in California collects all 58 counties.
Most misdemeanors: one year to charge; most felonies: three years.
Cal. Penal Code §§ 799–802
Charging deadlines scale with the offense: crimes punishable by death or life imprisonment, and embezzlement of public money, may be prosecuted at any time (Cal. Penal Code § 799). After arrest, arraignment must generally occur within 48 hours (Cal. Penal Code § 825).
Superior Court of California, County of Contra Costa.
County seat: Martinez
Main courthouse: Wakefield Taylor Courthouse, 725 Court Street, Martinez, CA 94553
Help with forms without a lawyer: the court's self-help center (source: The court's official website, read 2026-09-27).
Official court information, locations, and filing rules: contracosta.courts.ca.gov
341 attorneys on the official State Bar of California roll list criminal defense among their practice areas with an address of record in Contra Costa County.
326 of them hold an active licence; the remainder are recorded as inactive and are not currently eligible to practise.
The roster concentrates in Martinez (169), Walnut Creek (56), Richmond (26) and Lafayette (15).
7 hold a State Bar Certified Legal Specialist designation, a certification issued by the State Bar's Board of Legal Specialization, and not a rating or a ranking.
For 3, the registry records a language other than English, almost always from a firm website published in that language; that describes the website, not an attorney's own ability.
Admission years on this roster run from 1966 to 2025.
The employers most represented here are Contra Costa County Public Defender (28), Contra Costa County District Attorney (26) and Contra Costa District Attorney (12).
Criminal Defense · Lafayette · Contra Costa County
Bar #67055 · Admitted 1975
Identity verified · View the record →
Criminal Defense · Martinez · Contra Costa County
Bar #331368 · Admitted 2020
Official record · View the record →
Criminal Defense · Martinez · Contra Costa County
Bar #298849 · Admitted 2014
Official record · View the record →
Criminal Defense · Lafayette · Contra Costa County
Bar #243099 · Admitted 2006
Official record · View the record →
Criminal Defense · Walnut Creek · Contra Costa County
Bar #165523 · Admitted 1993
Official record · View the record →
Criminal Defense · Martinez · Contra Costa County
Bar #354293 · Admitted 2024
Official record · View the record →
Criminal Defense · Martinez · Contra Costa County
Bar #287821 · Admitted 2012
Official record · View the record →
Criminal Defense · Walnut Creek · Contra Costa County
Bar #342777 · Admitted 2022
Official record · View the record →
Criminal Defense · Martinez · Contra Costa County
Bar #320551 · Admitted 2018
Official record · View the record →
Criminal Defense · Martinez · Contra Costa County
Bar #287935 · Admitted 2012
Official record · View the record →
The full Contra Costa County roster · 326 attorneys with an active license and a criminal defense practice area: is listed by surname in the 2 sections below.
Open a free case file, choose how attorneys may contact you, and review any terms they send. You decide whom to contact and whether to proceed.
In the last 30 days attorneys have read 11 filed matters on the registry.
Submit your case for reviewLegal information, not legal advice
The matters this field covers, as Californians search for them. Each attorney's own profile states which of these they take.
Source: Cal. Penal Code §§ 799–802 · State Bar of California licensee records · Checked: · Maintained by the California Attorney Registry from official State Bar of California records. Legal information, not legal advice.
Describe your matter once, review the verified records, and place the call; the choice is always yours.
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