Your Altadena Private Investigator for Surveillance and Investigations
Looking for a private investigator in Altadena? Bear Witness Private Investigators is a California-licensed firm (PI #18755) that has specialized in surveillance since 1996. Altadena is an unincorporated community of about 42,000 people in Los Angeles County, and it is part of our regular coverage across Southern California.
Our Altadena 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.
Altadena Surveillance Investigations: Our Specialty
As a Altadena private investigator, surveillance is the core of what we do. We document activity legally, discreetly, and in a way that holds up in court.
Mobile Surveillance
We follow the subject by vehicle through Altadena 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.
Like much of Los Angeles County, Altadena mixes residential neighborhoods with busy commercial corridors. We combine discreet residential positioning with mobile coverage on the roads in between.
Cases Our Altadena Private Investigators Take On
Whatever the situation, the work comes down to documenting the facts lawfully and clearly.
Personal Cases
- Nanny & daycare surveillance — peace of mind about who is caring for your child in Altadena.
- Infidelity & cheating spouse — discreet surveillance that gives you a clear answer, either way.
- Runaways & missing persons — finding someone who has left Altadena or stopped answering.
Family Law Cases
- Child custody — facts that help a court decide what is best for your child.
- Divorce investigations — facts and evidence your family law attorney can use.
- Child visitation — observing whether visitation terms are being followed.
- Lifestyle investigations — showing how someone actually lives when income or need is in dispute.
- Cohabitation — proof of a live-in partner when spousal support is at stake.
- Child support — uncovering unreported work that affects support.
Business Cases
- Business partner surveillance — verifying what a partner or associate is really doing.
- Employee theft — facts for Altadena employers before they confront anyone.
- Insurance defense — field work that supports a strong defense.
- Workers’ comp fraud — surveillance on claims where activity and injuries don’t match.
- Injury claims — showing what a claimant can really do.
Law Firm Cases
- Evasive subpoena service — serving witnesses and parties who are avoiding service.
- Evidence gathering — facts collected to evidentiary standards.
- Surveillance — surveillance your client’s case can stand on.
- Witness statements — tracking down witnesses in Altadena and beyond.
- Court testimony — investigator testimony in California courts when needed.
- Records research — public and court records research to support your case.
The Bear Witness Difference in Altadena
Choosing a private investigator in Altadena comes down to experience, discretion, and evidence that holds up.
Surveillance Specialists
We specialize in surveillance, so your case gets investigators who do this every day.
Court-Ready Evidence
Evidence gathered lawfully and documented the way California judges and attorneys expect.
Available 24/7
Nights, weekends, holidays — we work when your subject is active.
Licensed & Veteran-Owned
A veteran-owned firm licensed by the California Bureau of Security and Investigative Services.
Absolute Discretion
Confidential from the first call; covert in the field.
Honest Results
If nothing is going on, we tell you. A clear answer is the goal, not more billable hours.
What Our Clients Say
Real reviews from Bear Witness clients across California.
“Of all the private investigators I have used, the Bear Witness Detective Agency has proven to be the only investigation company I can completely rely on and trust. When I need smart surveillance investigators who get the job done right, they are always at the very top of my call list.”
“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!”
“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 Altadena Cases Are Heard
Altadena sits roughly 20 miles from Los Angeles, the Los Angeles County seat, where the main Superior Court of California, County of Los Angeles facilities are located.
If your Altadena matter ends up in the Superior Court of California, County of Los Angeles, documentation quality decides whether the evidence helps. We keep chain-of-custody records and write reports in plain chronological order.
About 78% of Altadena households own their homes. Stable, quiet neighborhoods mean residents notice unfamiliar cars, so residential surveillance here takes careful positioning.
Also Serving Near Altadena
Cases rarely stay inside one city limit. From Altadena, we regularly work:
Straight-line distances from Altadena.
Working With a Altadena 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 Altadena 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.
Altadena Private Investigator FAQs
Do you also cover Pasadena and La Canada Flintridge?
Yes. Pasadena is about 2 miles from Altadena and La Canada Flintridge about 4 miles, and both are part of our regular coverage in Southern California.
How far is Altadena from the Los Angeles County courthouse?
Altadena is roughly 20 miles (straight-line) from Los Angeles, the Los Angeles County seat, where the main Superior Court of California, County of Los Angeles facilities are. Some matters are heard at branch courthouses; your attorney can confirm the location.
What does a private investigator in Altadena 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 Altadena 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.
What if the investigation finds nothing?
You get an honest report that says so. A clean result still answers the question.
Do you work with Los Angeles County attorneys?
Yes. Law firms use us for evidence gathering, surveillance, witness statements, records research, evasive subpoena service, and court testimony.
Can you catch a cheating spouse in Altadena?
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.
Ready to talk to a private investigator in Altadena? Call 1(877)PROOF-24/7 for a free, confidential consultation.