Private Investigator in Sunnyvale, CA — Surveillance Is Our Specialty
If you need a private investigator in Sunnyvale, Bear Witness has been documenting the truth for California clients since 1996. Sunnyvale is a city of about 153,000 people in Santa Clara County. Surveillance is our specialty, and every case is handled by a licensed investigator — never a call center.
Our Sunnyvale 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.
Sunnyvale Surveillance Investigations: Our Specialty
Most investigations come down to one question: what is really happening? A private investigator in Sunnyvale answers it with surveillance video, photos, and a written timeline.
Mobile Surveillance
We follow the subject by vehicle through Sunnyvale 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.
Every Sunnyvale surveillance plan is built around where your subject actually lives, works, and spends time — not a generic template.
What Our Sunnyvale Private Investigators Handle
Whatever the situation, the work comes down to documenting the facts lawfully and clearly.
Personal Cases
- Nanny & daycare surveillance — observing caregiver conduct and advising on what in-home recording is legal.
- Infidelity & cheating spouse — documenting where a partner goes and who they meet, without them knowing.
- Runaways & missing persons — people-location work to find someone who has gone missing or run away.
Family Law Cases
- Cohabitation — evidence of a supported spouse living with a partner, relevant to support.
- Child visitation — a factual record of exchanges and visits.
- Child custody — documenting what happens during parenting time in and around Sunnyvale.
- Divorce investigations — facts and evidence your family law attorney can use.
- Child support — documenting employment and income the other parent may not be reporting.
- Lifestyle investigations — what someone’s day-to-day life really looks like.
Business Cases
- Injury claims — showing what a claimant can really do.
- Employee theft — facts for Sunnyvale employers before they confront anyone.
- Business partner surveillance — answers before you sign or after trust breaks down.
- Workers’ comp fraud — documenting claimant activity across Santa Clara County.
- Insurance defense — field work that supports a strong defense.
Law Firm Cases
- Evidence gathering — documentation built for the Superior Court of California, County of Santa Clara.
- Surveillance — surveillance your client’s case can stand on.
- Court testimony — investigator testimony in California courts when needed.
- Witness statements — finding and interviewing the people who saw what happened.
- Evasive subpoena service — service on people who don’t want to be found.
- Records research — the records behind the story.
The Bear Witness Difference in Sunnyvale
Choosing a private investigator in Sunnyvale comes down to experience, discretion, and evidence that holds up.
Absolute Discretion
Your case is never discussed with anyone outside the firm, and the subject never knows we were there.
Direct Access to Your Investigator
One investigator from your first call to your final report, with updates along the way.
Available 24/7
Nights, weekends, holidays — we work when your subject is active.
Statewide Coverage
Coverage across Southern, Northern, and Central California, including all of Santa Clara County.
Honest Results
We report what we observed — no stretching thin evidence to justify a case.
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.
“I can’t believe you got the evidence so quickly! Something that had been bothering me for 2 years was put to rest after one day of your surveillance. I finally have the truth in my hands and can move on with my life now.”
“Excellent communication, insight, and follow-through skills. Very impressed with your surveillance video. Excellent work. Thank you! Will refer to friends in need.”
“Thank you for all your help. You guys were really great! I will definitely refer your private detective agency to all my friends & colleagues in need.”
Names and/or locations altered for client privacy. Read more client reviews →
Where Sunnyvale Cases Are Heard
Sunnyvale sits roughly 13 miles from San Jose, the Santa Clara County seat, where the main Superior Court of California, County of Santa Clara facilities are located.
If your Sunnyvale matter ends up in the Superior Court of California, County of Santa Clara, documentation quality decides whether the evidence helps. We keep chain-of-custody records and write reports in plain chronological order.
About 56% of Sunnyvale 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.
Nearby Areas We Cover
Cases rarely stay inside one city limit. From Sunnyvale, we regularly work:
Straight-line distances from Sunnyvale.
Working With a Sunnyvale Private Investigator, Step by Step
- 1
Free Consultation
Tell a licensed investigator what you know and what you need confirmed. Completely confidential.
- 2
Plan & Estimate
We build a plan around your subject’s routine in Sunnyvale and give you a written estimate before any work begins.
- 3
Surveillance
Your investigator documents activity with time-stamped video and keeps you updated.
- 4
Report & Evidence
You receive a clear written report, photos, and video — plus testimony if needed.
Sunnyvale Private Investigator FAQs
Do you also cover Mountain View and Santa Clara?
Yes. Mountain View is about 3 miles from Sunnyvale and Santa Clara about 4 miles, and both are part of our regular coverage in Northern California.
How far is Sunnyvale from the Santa Clara County courthouse?
Sunnyvale is roughly 13 miles (straight-line) from San Jose, the Santa Clara County seat, where the main Superior Court of California, County of Santa Clara facilities are. Some matters are heard at branch courthouses; your attorney can confirm the location.
What does a private investigator in Sunnyvale 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 Sunnyvale and across California.
Do I need to meet in person?
No. Most Sunnyvale clients handle everything by phone, from the first call to the final report.
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 Sunnyvale?
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.
Is everything I tell you confidential?
Yes. Your case is handled by your assigned investigator and never discussed with anyone outside the firm.
How do I verify your license?
Look up PI License #18755 on the California Department of Consumer Affairs license search.
Every case starts with a free, confidential consultation. Call 1(877)PROOF-24/7 to speak with a licensed investigator about your Sunnyvale case.