Others just watch. We investigate.
National Special Investigations Unit specializes in surveillance and other services catered to risk managers and insurance professionals.
Our goal is to provide you with effective evidence for uncovering the truth. We accomplish this through covert surveillance and first-rate investigative services completed in a proficient and timely manner.
We have licensed Investigators in all 50 States
Welcome to National SIU
Private Service Division
National SIU’s Private Services Division is your complete solution for retrieving effective legal and factual evidence. With over 20 years of experience in private investigation, we have the expertise, technology, and resources to uncover the truth.
Celebrating Over 20 Years of Investigative Excellence.
We consistently provide our clients with

investigation

evidence

Same-day status on all investigations

Flat-rate pricing, which includes 4 or 8 hours of on-site covert surveillance per day and all related expenses
Private Services
Investigative Services
- Investigation of Infidelity or Co-habitation
- Family Law & Divorce Investigations
- Missing Persons
- Bank and Brokerage Search
- Asset Searches
- Bar Investigations
- Witness Statements
- Undercover Investigations
- GPS Monitoring
- Special Process Service
- Theft Investigations
- Criminal/Civil Investigations
- Child Custody Cases
- Electronic Surveillance & Countermeasures
- Background Checks
- Drug Abuse
- Corporate Investigations
In addition to these services, we offer a full array of investigative solutions that are catered to the needs of our clients. Our goal is to provide a thorough investigation that produces solid evidence to support our conclusions.
Let Our Experts Produce the Evidence You Need
Thinking about conducting an investigation on your own? Don’t take the risk. Without the proper skills, technology, or knowledge of privacy laws, you could get into trouble with police, or even end up with a lawsuit on your hands. Our investigators have the expertise to produce better results in a fraction of the time, while conducting a lawful, ethical investigation.
National SIU also provides international private investigators, with exceptional skills and training to offer unparalleled investigative solutions, and help clients save time. Our investigative experts are trained to have a keen eye for detail, and they are required to have a degree in criminal justice. Our services have proven to be helpful for investigating many cases, and our innovative methods always get the job done.
Testimonials
“Received and reviewed surveillance video for my claimant.Best video of it’s type that I’ve ever seen of our guy. Lots of footage. Our corporate EHS and legal department will see this as well. Great job!”
– Brent F
Human Resources
”I have used so many investigators in my past and the rule of thumb is that they do not get anything. Anything I have given you, you have always got something. You guys are running 100% in my claims. You guys rock!”
-Bonnie B.
Senior Claims Adjuster
“Great choice in surveillance vendor. Agree to the additional time on that claimant and any more time his gut tells him it would be a good idea.If we get more snow, send him out there. Would also ask you have him pull hunting licenses to see if anyone has pulled one that should not be able to physically hunt. Bottom line, the more we get on these folks, the better our chances of getting their claims resolved reasonably.”
-Cathy D.
Manager, Workers’ Compensation
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