Contra Costa County Bail Bonds — 24 Hour Service
Criminal cases filed in this county are heard by the Contra Costa County Superior Court, seated in Martinez, and new arrests are booked into Martinez Detention Facility, West County Detention Facility, Marsh Creek Detention Facility. Those two facts decide almost everything about the next few hours: the court controls the bail amount, and the jail controls the paperwork window. A bail agent works inside both systems at once, which is why the first call matters more than anything you can do on your own.
Contra Costa County sits in the Bay Area region of California. Call (310) 846-8980 with the person's full legal name, their date of birth, and the city or facility where they were taken. A licensed California bail agent who writes bonds in Contra Costa County can start locating the booking on that first call — 2 a.m., Sunday, or a holiday makes no difference to the phone line.
Where bonds are posted
Jails in Contra Costa County
Local pages
Cities in Contra Costa County
Eight statutes
Common charges
Hub
Statewide
The amount
How bail is set in Contra Costa County
California bail is set by the court, never by a bail agent and never by this website. Most counties publish a bail schedule that patrol and jail staff apply at booking, so the number attached to a new arrest usually comes straight off that list rather than from a judge's individual decision. The Contra Costa County Superior Court can revisit the amount at arraignment, and either side can ask for a change.
Because the schedule is organized by statute, the counts written on the booking sheet drive the total. A second count, an alleged enhancement, or a probation or parole hold can move the figure well above what a family expects from the charge name alone. We will not quote you a dollar figure for Contra Costa County on a web page, because the honest answer depends on the booking sheet in front of the agent.
Four minutes on the phone
What the agent needs from you
Full legal name and correct spelling. Date of birth. The city where the arrest happened, or the facility name if you already know it. Booking number and the listed charge if you have them. That is enough for an agent to find the record, confirm the posted bail, and tell you plainly what the premium and the payment terms on that bond would be.
The person who signs is called the indemnitor — usually a parent, spouse, sibling, or close friend. The indemnitor takes responsibility for the defendant showing up to court and for the agreed premium. Nothing is signed before it is explained out loud. Paperwork is normally handled by phone and electronic signature, so no one has to drive across Contra Costa County in the middle of the night.
What no agent controls
Release timing, holds, and honest expectations
Once a bond is posted at the correct facility, timing belongs to the jail. Intake volume, shift changes, inmate counts, medical clearance, and how many other releases are queued all affect the wait, and those things vary between facilities and between nights at the same facility. Any company that gives you a guaranteed release time in Contra Costa County is guessing.
A hold is different, and it is the most common reason a posted bond does not produce a release. Immigration detainers, probation and parole holds, warrants out of another California county, and out-of-state warrants all keep a person in custody after bail is satisfied. Ask about holds on the first call. It is better to know before money moves than after.
Answers
Contra Costa County bail bond questions
Can a bond be arranged in Contra Costa County in the middle of the night?
Yes. The line at (310) 846-8980 is answered live around the clock, including weekends and holidays, and licensed California agents write Contra Costa County bonds on the same schedule the jail books people.
Who decides the bail amount in Contra Costa County?
The court does. Jail staff normally apply the county bail schedule at booking, and the Contra Costa County Superior Court in Martinez can revisit the amount at arraignment. No bail bond company sets or changes it.
Where is the bond posted for a Contra Costa County arrest?
At the facility holding the person — commonly Martinez Detention Facility. Confirming the correct building first is why an agent asks for the city of arrest and the booking number.
How much money is needed to start a Contra Costa County bond?
That depends on the posted bail, the charge, the surety, and the agent writing the bond. Payment plans and low down payments are available on many bonds, but qualification is not automatic, so the honest figure comes from a call rather than a web page.
Is collateral required in Contra Costa County?
Most bonds are written without collateral. Whether it applies to a specific bond depends on the case and the surety, and it is explained before anything is signed.
Can a hold keep someone in custody after bail is paid in Contra Costa County?
Yes. Probation or parole holds, warrants from another county, out-of-state warrants, and immigration detainers all survive a posted bond. Ask about holds before money moves.
Call (310) 846-8980 now
Lines are answered live, every hour of every day. Have the person's full name, date of birth, and the city or jail where they were booked, and a licensed California bail agent can start work on the first call.
This website is designed for general California bail bond information only. It is not, nor is it intended to be, legal advice. Various bail bonds companies use this platform and maintain independent bail bond companies.
Bail in California is set by the court. Bond premiums and payment terms vary by case, surety, and agent. Qualification is not automatic. Call for a confidential case review.