Your Martinez Private Investigator for Surveillance and Investigations
If you need a private investigator in Martinez, Bear Witness has been documenting the truth for California clients since 1996. Martinez is a city of about 37,000 people in Contra Costa County. Surveillance is our specialty, and every case is handled by a licensed investigator — never a call center.
Our Martinez clients include individuals facing infidelity or a missing family member, parents in custody and support disputes, employers and insurers dealing with fraud, and law firms that need evidence and testimony. What they share is a need for discreet, lawful surveillance that holds up.
Surveillance Specialists Serving Martinez
Most investigations come down to one question: what is really happening? A private investigator in Martinez answers it with surveillance video, photos, and a written timeline.
Mobile Surveillance
We follow the subject by vehicle through Martinez and beyond, keeping distance and cover so they never know we are there.
Static Surveillance
We hold position at the locations that matter to your case and record activity with time-stamped video.
Two-Investigator Teams
For careful or unpredictable subjects, two investigators trade off so the same car is never seen twice.
Like much of Contra Costa County, Martinez mixes residential neighborhoods with busy commercial corridors. We combine discreet residential positioning with mobile coverage on the roads in between.
What Our Martinez Private Investigators Handle
Whatever the situation, the work comes down to documenting the facts lawfully and clearly.
Personal Cases
- Nanny & daycare surveillance — documenting how a caregiver treats your child, within California privacy law.
- Runaways & missing persons — locating family members and loved ones who have left or lost touch.
- Infidelity & cheating spouse — a clear, factual answer for Martinez clients who suspect a partner.
Family Law Cases
- Lifestyle investigations — showing how someone actually lives when income or need is in dispute.
- Child custody — parenting-time compliance, home conditions, and welfare concerns.
- Cohabitation — evidence of a supported spouse living with a partner, relevant to support.
- Divorce investigations — documentation that supports your attorney’s strategy.
- Child support — documenting employment and income the other parent may not be reporting.
- Child visitation — a factual record of exchanges and visits.
Business Cases
- Employee theft — documenting internal theft and misconduct before you act.
- Workers’ comp fraud — surveillance on claims where activity and injuries don’t match.
- Business partner surveillance — verifying what a partner or associate is really doing.
- Insurance defense — claim investigations built for insurers and their attorneys.
- Injury claims — verifying the extent of claimed injuries through lawful observation.
Law Firm Cases
- Witness statements — finding and interviewing the people who saw what happened.
- Evasive subpoena service — serving witnesses and parties who are avoiding service.
- Records research — court, property, business, and public records research.
- Surveillance — time-stamped video and investigator reports for your case.
- Court testimony — our investigators testify to what they observed.
- Evidence gathering — facts collected to evidentiary standards.
What Sets Our Martinez Investigators Apart
Choosing a private investigator in Martinez comes down to experience, discretion, and evidence that holds up.
Direct Access to Your Investigator
One investigator from your first call to your final report, with updates along the way.
Statewide Coverage
Coverage across Southern, Northern, and Central California, including all of Contra Costa County.
Licensed & Veteran-Owned
A veteran-owned firm licensed by the California Bureau of Security and Investigative Services.
Available 24/7
Cases don’t keep business hours. We take calls and work surveillance day, night, and weekends.
Absolute Discretion
Confidential from the first call; covert in the field.
Court-Ready Evidence
Time-stamped video, detailed reports, and investigator testimony that stand up in court.
What Our Clients Say
Real reviews from Bear Witness clients across California.
“Thanks for the great investigation. This was my first time hiring a private investigator and you guys really made it a positive experience. The surveillance video and information your company obtained really helped me out in making a tough decision. I appreciate all your hard work and personal attention.”
“Excellent communication, insight, and follow-through skills. Very impressed with your surveillance video. Excellent work. Thank you! Will refer to friends in need.”
“I first consulted with a few other investigation companies in the area, yet I remained skeptical about their service. But, after I talked over my case with James, I was pleased with the high levels of confidence and experience he conveyed. In the end, I am glad I chose Bear Witness to perform my surveillance investigation. Thanks for the video your company obtained. It was eye-opening.”
Names and/or locations altered for client privacy. Read more client reviews →
Where Martinez Cases Are Heard
Martinez is the Contra Costa County seat, so the main Superior Court of California, County of Contra Costa facilities are close by.
Divorce, custody, support, and civil cases involving Martinez residents are generally filed in the Superior Court of California, County of Contra Costa. We document every case with that courtroom in mind: dated, time-stamped, gathered legally, and backed by testimony if needed.
About 70% of Martinez households own their homes. Stable, quiet neighborhoods mean residents notice unfamiliar cars, so residential surveillance here takes careful positioning.
Also Serving Near Martinez
If your subject lives in Martinez but works or travels elsewhere, that’s routine. Nearby areas include:
Straight-line distances from Martinez.
How Hiring a Private Investigator in Martinez Works
- 1
Call Us
A short, private conversation about your situation, with no obligation.
- 2
Strategy
We decide when and where surveillance in and around Martinez is most likely to answer your question.
- 3
Fieldwork
One investigator handles your case from start to finish.
- 4
Results
Documented findings in plain language — including a clear “nothing found” when that is the truth.
Martinez Private Investigator FAQs
Do you also cover Pleasant Hill and Benicia?
Yes. Pleasant Hill is about 4 miles from Martinez and Benicia about 6 miles, and both are part of our regular coverage in Northern California.
What does a private investigator in Martinez do?
We document facts for personal, family law, business, and legal cases — most often through surveillance, along with background research, people location, witness statements, and process serving.
Do you specialize in surveillance?
Yes. Surveillance has been Bear Witness’s specialty since 1996, and it is part of nearly every case we handle in Martinez and across California.
How quickly can a Martinez case start?
Most cases begin within a day or two of your first call, once we agree on a plan.
Do you work with Contra Costa County attorneys?
Yes. Law firms use us for evidence gathering, surveillance, witness statements, records research, evasive subpoena service, and court testimony.
Can you document cohabitation for a spousal support case?
Yes. Under California Family Code section 4323, a supported spouse living with a partner can create a presumption of decreased need for support. We document cohabitation for you and your attorney.
Do you handle workers’ compensation and insurance claims?
Yes. We conduct claimant surveillance and claim investigations for employers, insurers, and defense counsel.
How is a Martinez investigation priced?
Surveillance is billed by time. After a free consultation, you get a written estimate before any billable work begins.
Is everything I tell you confidential?
Yes. Your case is handled by your assigned investigator and never discussed with anyone outside the firm.
Ready to talk to a private investigator in Martinez? Call 1(877)PROOF-24/7 for a free, confidential consultation.