California Investigation Services

One of the Top Private Investigations and Litigation Support Firms in California

Our Private Investigators are trained in Family Law, Cheating Spouse, Child Custody, Child Support, Missing Persons, and Civil Litigation cases, to name a few.

USA Detectives has been providing private data collection, process serving and legal support information services. We have been one of the most trusted P.I. firms in the State of California. Satisfied clients have included prestigious law firms, national insurance companies, prominent corporations and small businesses protecting their investments.

In addition, our services have been invaluable to private individuals looking for investigative solutions to a range of legal and personal challenges. Our California-based private investigators and private detectives provide experienced, discrete private investigation tactics for spousal investigation for marital infidelity, in-home caregiver surveillance, and child custody monitoring. With seasoned experience and professionalism our investigators have proven their integrity testifying in court as objective observers reinforcing the cases of our clients to bolster the truth. Due to stringent certifications and training, a respected private investigator giving court testimony before a judge or jury can make all the difference in winning a legal proceeding.

Why Choose Us?

Experienced Investigators & Legal Professionals

Our team combines experienced private investigators, process servers, and litigation support professionals to deliver reliable facts, timely legal support, and dependable results.

Comprehensive Investigation & Litigation Support

From surveillance and background investigations to process serving, court filings, and document retrieval, we provide complete solutions to support legal matters from start to finish.

Trusted, Confidential & Results-Driven

Every case is handled with discretion, professionalism, and attention to detail. We combine proven investigative methods with advanced technology to deliver accurate information you can trust.

The Best USA Detective

Expertise You Can Depend On

Our staff of seasoned professional investigators not only have police training, but we hand pick specialized experts in their fields. The USA Detectives team includes forensic document examiners, investigative interview experts, and well-respected industry authorities in the credit check, debt collections, loan and fraud investigation, and related financial legal fields. We are trained and licensed to conduct private investigations, process service, on-site personal and property security (commercial and residential) as well as all aspects of private detective work in California, Arizona and Colorado.

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Professional Excellence

Behind every case is a team of dedicated investigators and litigation support professionals committed to delivering accurate information, reliable evidence, and exceptional service.

Experienced Investigators

Our team includes seasoned investigators with law enforcement backgrounds and extensive field experience. Every case is approached with professionalism, sound judgment, and a commitment to uncovering the facts.

Specialized Experts

Beyond private investigators, we work with carefully selected specialists, including forensic document examiners, investigative interview professionals, and experts in financial and fraud-related investigations.

Licensed Services

We are licensed and qualified to provide private investigations, process serving, litigation support, commercial and residential security, and a broad range of investigative services tailored to each client's needs.

Modern Methods, Proven Results

By combining advanced investigative technology with traditional fieldwork and attention to detail, we deliver reliable information and actionable evidence that supports informed decisions.

Every one of our licensed investigators and trusted support staff pass rigorous criminal background checks to ensure our clients total secrecy, tactful discretion and trust. We additionally conduct detailed investigation into the character, history and ethics of our staff as USA Detectives puts intensive focus on not only protecting our clients, but providing them with the best private eye services available nationwide.

Let's Discuss Your Case

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