Your Berkeley Private Investigator for Surveillance and Investigations
Bear Witness is the private investigator in Berkeley that families, attorneys, and businesses call when they need facts, not guesses. Berkeley is a city of about 120,000 people in Alameda County. We are a veteran-owned, California-licensed firm (PI #18755), and surveillance is what we do best.
Our Berkeley 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.
Why Surveillance Is at the Heart of Every Berkeley Case
Most investigations come down to one question: what is really happening? A private investigator in Berkeley answers it with surveillance video, photos, and a written timeline.
Mobile Surveillance
We follow the subject by vehicle through Berkeley and beyond, keeping distance and cover so they never know we are there.
Static Surveillance
Discreet observation of a home, workplace, or business from a lawful public vantage point, documenting who comes and goes.
Two-Investigator Teams
For careful or unpredictable subjects, two investigators trade off so the same car is never seen twice.
At roughly 11,500 people per square mile, Berkeley is dense — tight parking, slow traffic, and subjects who often move on foot. Our investigators plan for that.
How a Berkeley Private Investigator Can Help
Four kinds of clients call us most — and surveillance is at the center of almost every case.
Personal Cases
- Infidelity & cheating spouse — a clear, factual answer for Berkeley clients who suspect a partner.
- Runaways & missing persons — finding someone who has left Berkeley or stopped answering.
- Nanny & daycare surveillance — documenting how a caregiver treats your child, within California privacy law.
Family Law Cases
- Lifestyle investigations — documenting spending, activities, and lifestyle relevant to support claims.
- Cohabitation — proof of a live-in partner when spousal support is at stake.
- Child custody — parenting-time compliance, home conditions, and welfare concerns.
- Child visitation — documenting visitation exchanges and compliance with the court order.
- Child support — uncovering unreported work that affects support.
- Divorce investigations — documentation that supports your attorney’s strategy.
Business Cases
- Injury claims — verifying the extent of claimed injuries through lawful observation.
- Employee theft — documenting internal theft and misconduct before you act.
- Workers’ comp fraud — documenting claimant activity across Alameda County.
- Business partner surveillance — due diligence and surveillance on partners and key associates.
- Insurance defense — field work that supports a strong defense.
Law Firm Cases
- Witness statements — tracking down witnesses in Berkeley and beyond.
- Evasive subpoena service — serving witnesses and parties who are avoiding service.
- Surveillance — time-stamped video and investigator reports for your case.
- Court testimony — our investigators testify to what they observed.
- Records research — public and court records research to support your case.
- Evidence gathering — documentation built for the Superior Court of California, County of Alameda.
Why Berkeley Clients Choose Bear Witness
Choosing a private investigator in Berkeley comes down to experience, discretion, and evidence that holds up.
Direct Access to Your Investigator
We limit our caseload, so you talk to the investigator working your case — not a call center.
Surveillance Specialists
Surveillance has been our focus since 1996. It is not a side service — it is what we do best.
Available 24/7
Cases don’t keep business hours. We take calls and work surveillance day, night, and weekends.
Court-Ready Evidence
Evidence gathered lawfully and documented the way California judges and attorneys expect.
Honest Results
If nothing is going on, we tell you. A clear answer is the goal, not more billable hours.
Licensed & Veteran-Owned
A veteran-owned firm licensed by the California Bureau of Security and Investigative Services.
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.”
“James, thank you for stepping in and helping out our law firm! You came highly recommended to us by a colleague as the go-to-guy for all things surveillance. Good communication skills & excellent work!”
“Wow. Outstanding job! I really did get lucky when I picked you guys. I don’t think any other private investigator could have handled my case better than you did. Very on top of your game, from start to finish. Excellent work!”
Names and/or locations altered for client privacy. Read more client reviews →
Berkeley Cases and the Alameda County Courts
Berkeley sits roughly 8 miles from Oakland, the Alameda County seat, where the main Superior Court of California, County of Alameda facilities are located.
If your Berkeley matter ends up in the Superior Court of California, County of Alameda, documentation quality decides whether the evidence helps. We keep chain-of-custody records and write reports in plain chronological order.
About 57% of Berkeley households rent, and renters move more often — so for process serving and people-location work, we verify a subject’s current address before the first attempt.
Also Serving Near Berkeley
Cases rarely stay inside one city limit. From Berkeley, we regularly work:
Straight-line distances from Berkeley.
How Hiring a Private Investigator in Berkeley 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 Berkeley 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.
Berkeley Private Investigator FAQs
Do you also cover Emeryville and El Cerrito?
Yes. Emeryville is about 2 miles from Berkeley and El Cerrito about 4 miles, and both are part of our regular coverage in Northern California.
How far is Berkeley from the Alameda County courthouse?
Berkeley is roughly 8 miles (straight-line) from Oakland, the Alameda County seat, where the main Superior Court of California, County of Alameda facilities are. Some matters are heard at branch courthouses; your attorney can confirm the location.
What does a private investigator in Berkeley 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 Berkeley and across California.
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.
Can you catch a cheating spouse in Berkeley?
We can document what your spouse actually does and who they meet, with time-stamped video and a written report, and give you a clear answer either way.
What if the investigation finds nothing?
You get an honest report that says so. A clean result still answers the question.
Do I need to meet in person?
No. Most Berkeley clients handle everything by phone, from the first call to the final report.
Is surveillance legal in Berkeley?
Yes, when done correctly. California allows observation in public places where there is no reasonable expectation of privacy. Our investigators do not trespass, use hidden vehicle trackers, or record private conversations.
Ready to talk to a private investigator in Berkeley? Call 1(877)PROOF-24/7 for a free, confidential consultation.