Greenbrae Private Investigator Services, Built Around Surveillance
Bear Witness is the private investigator in Greenbrae that families, attorneys, and businesses call when they need facts, not guesses. Greenbrae is a community near Larkspur, in Marin County. We are a veteran-owned, California-licensed firm (PI #18755), and surveillance is what we do best.
Whether you suspect a cheating spouse, need evidence for a custody or support case, are dealing with a questionable workers’ compensation claim, or represent a client who needs court-ready surveillance, our Greenbrae investigators plan each case around the subject’s real routine and document it with time-stamped video.
Why Surveillance Is at the Heart of Every Greenbrae Case
Most investigations come down to one question: what is really happening? A private investigator in Greenbrae answers it with surveillance video, photos, and a written timeline.
Mobile Surveillance
Experienced drivers who anticipate turns and freeway exits, so your subject is documented from stop to stop.
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.
Greenbrae sits next to Larkspur (about 13,000 people), and subjects often move between the two. Our coverage follows them across both.
How a Greenbrae Private Investigator Can Help
Four kinds of clients call us most — and surveillance is at the center of almost every case.
Personal Cases
- Runaways & missing persons — finding someone who has left Greenbrae or stopped answering.
- Infidelity & cheating spouse — discreet surveillance that gives you a clear answer, either way.
- Nanny & daycare surveillance — documenting how a caregiver treats your child, within California privacy law.
Family Law Cases
- Lifestyle investigations — showing how someone actually lives when income or need is in dispute.
- Child support — documenting employment and income the other parent may not be reporting.
- Child visitation — a factual record of exchanges and visits.
- Child custody — documenting what happens during parenting time in and around Greenbrae.
- Divorce investigations — facts and evidence your family law attorney can use.
- Cohabitation — evidence of a supported spouse living with a partner, relevant to support.
Business Cases
- Business partner surveillance — due diligence and surveillance on partners and key associates.
- Employee theft — quietly confirming suspected theft so you can respond with facts.
- Injury claims — documenting physical activity relevant to personal injury claims.
- Insurance defense — field work that supports a strong defense.
- Workers’ comp fraud — documenting claimant activity across Marin County.
Law Firm Cases
- Court testimony — investigator testimony in California courts when needed.
- Evidence gathering — documentation built for the Superior Court of California, County of Marin.
- Surveillance — defensible surveillance your team can rely on at trial.
- Records research — public and court records research to support your case.
- Witness statements — locating witnesses and taking their statements.
- Evasive subpoena service — service on people who don’t want to be found.
What Sets Our Greenbrae Investigators Apart
Not every Greenbrae private investigator specializes in surveillance. Here is what makes Bear Witness different.
Honest Results
We report what we observed — no stretching thin evidence to justify a case.
Absolute Discretion
Confidential from the first call; covert in the field.
Statewide Coverage
From Greenbrae to the rest of California, we follow subjects wherever the case leads.
Direct Access to Your Investigator
We limit our caseload, so you talk to the investigator working your case — not a call center.
Surveillance Specialists
We specialize in surveillance, so your case gets investigators who do this every day.
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.
“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!”
“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.”
“Excellent communication, insight, and follow-through skills. Very impressed with your surveillance video. Excellent work. Thank you! Will refer to friends in need.”
Names and/or locations altered for client privacy. Read more client reviews →
Where Greenbrae Cases Are Heard
Greenbrae sits roughly 2 miles from San Rafael, the Marin County seat, where the main Superior Court of California, County of Marin facilities are located.
If your Greenbrae matter ends up in the Superior Court of California, County of Marin, documentation quality decides whether the evidence helps. We keep chain-of-custody records and write reports in plain chronological order.
Nearby Areas We Cover
Cases rarely stay inside one city limit. From Greenbrae, we regularly work:
Straight-line distances from Greenbrae.
How Hiring a Private Investigator in Greenbrae 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 Greenbrae 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.
Greenbrae Private Investigator FAQs
Do you also cover Larkspur and Corte Madera?
Yes. Larkspur is about less than a mile from Greenbrae and Corte Madera about 1 mile, and both are part of our regular coverage in Northern California.
What does a private investigator in Greenbrae 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 Greenbrae and across California.
How quickly can a Greenbrae case start?
Most cases begin within a day or two of your first call, once we agree on a plan.
Is everything I tell you confidential?
Yes. Your case is handled by your assigned investigator and never discussed with anyone outside the firm.
Do you work with Marin County attorneys?
Yes. Law firms use us for evidence gathering, surveillance, witness statements, records research, evasive subpoena service, and court testimony.
Can you help find a runaway or missing person?
Yes. We use people-location and investigative techniques to find family members and others who have left or lost touch.
What if the investigation finds nothing?
You get an honest report that says so. A clean result still answers the question.
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.
Ready to talk to a private investigator in Greenbrae? Call 1(877)PROOF-24/7 for a free, confidential consultation.