“Perfect service and communication! Exceeded expectations in every way. Highly recommend!!”
— Client Review
Private Investigation Services Since 1967
Trusted private investigations for legal, insurance, and corporate matters.
“There is no widely recognized family-owned and operated private investigation firm in the United States that predates National Business Investigations, Inc.”
National Business Investigations, Inc. (NBI) is a family owned and operated, full service private investigation firm. Clients engage NBI for asset discovery & recovery, witness locates, due diligence, business intelligence, pre-employment screening, background searches, workers’ compensation defense & fraud, civil litigation support, surveillance, and more.
Integrity
Professionalism
Performance Guarantee
Services
Focused investigative support for complex, high-stakes matters.
Legal
Witness locates, interviews, evidence recovery, financial records investigations, cyber crimes, and asset search & recovery.
Explore Legal Investigations >>Insurance
Validate claims, identify red flags, document activity, and support defensible decisions in potential fraud matters.
Explore Insurance Investigations >>Corporate
Executive background investigations, due diligence, business intelligence, theft, computer forensics, and protection support.
Explore Corporate Services >>Workers Comp Fraud
Gather the investigative information needed to evaluate legitimacy and disability level with clarity and confidence.
Explore Workers Comp Support >>Asset Searches
Pre-litigation, mid-case, or post-judgment—identify where assets may reside to support appropriate strategy and settlement.
Explore Asset Discovery >>Surveillance Services
Obtain evidence that may not otherwise be provable in or out of court—especially when other methods fall short.
Explore Surveillance >>Every investigation starts with a commitment…
and ends with a guarantee.
Having been in business for decades, we know there are many investigation companies you can call on. One does not thrive for over fifty years in this industry without a foundation of honesty, integrity, and professionalism.
We can never promise results—but we always guarantee our performance. If you are not happy with our performance, you only pay what you believe our investigation is worth.
Reviews
Read ReviewsWe’re ready to work with you. Are you ready?
Contact us to get started and find out why clients choose NBI for high-accountability investigative support.
Recent NBI Insights
Elder Financial Exploitation Investigations: How Families, Trustees, and Probate Attorneys Build a Recovery Record
How professional investigators document elder financial exploitation - undue influence, caregiver theft, fraudulent transfers, and exploitative powers…
By: Michael D. Julian
Trade Secret and IP Theft Investigations: How Companies Build a Defensible Forensic Record Before Litigation
How companies and their attorneys investigate suspected trade secret and IP theft, preserve a forensic record, and build defensible evidence before fi…
By: Michael D. Julian
Skip Tracing Services: How Professional Investigators Locate Hard-to-Find Subjects for Civil, Criminal, and Family-Law Cases
How licensed private investigators use skip tracing to locate defendants, debtors, witnesses, missing heirs, and process-service subjects when traditi…
By: Michael D. Julian
Insurance Fraud Investigations: How Carriers and Defense Counsel Build Evidence That Holds Up in Court
How professional insurance fraud investigations are built - from pre-surveillance claim review to courtroom-ready evidence - and what carriers, SIUs, …
By: Michael D. Julian