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“Perfect service and communication! Exceeded expectations in every way. Highly recommend!!”
— Client Review
National Business Investigations, Inc. (NBI) is a full-service investigations firm focused on corporate, legal, insurance, and personal investigations. Our clients engage NBI Investigators to perform investigations for business intelligence, counter industrial espionage, personal and criminal background investigations, AOE/COE investigations, and fraud. NBI Investigators provide clients with specialized investigative services throughout the United States by focusing on the client's needs and maintaining the highest standards of professionalism and integrity.
NBI is a specialized investigations firm with access to the best resources available to quickly and efficiently expedite your investigation. For over 50 years NBI has successfully worked with thousands of clients to perform investigations to obtain the information they needed.
National Business Investigation, Inc. specializes in providing investigative services for:
National Business Investigations, Inc. (NBI) provides investigative services in California, Colorado, Nevada, Texas, and Florida. Through our strategic partnerships we offer services throughout the United States and internationally for select services and support.
NBI employs skilled investigators in California, Nevada, Texas, and Florida. We are active across San Diego County, Riverside County, Orange County, Los Angeles County, and San Bernardino County, and maintain a network throughout these states. Our corporate office is located in Murrieta, California - a flourishing business and industrial hub of Southern California - allowing NBI to effectively serve the Southwest Region.
Focused investigative support for complex, high-stakes matters.
Witness locates, interviews, evidence recovery, financial records investigations, cyber crimes, and asset search & recovery.
Explore Legal Investigations >>Validate claims, identify red flags, document activity, and support defensible decisions in potential fraud matters.
Explore Insurance Investigations >>Executive background investigations, due diligence, business intelligence, theft, computer forensics, and protection support.
Explore Corporate Services >>Gather the investigative information needed to evaluate legitimacy and disability level with clarity and confidence.
Explore Workers Comp Support >>Pre-litigation, mid-case, or post-judgment—identify where assets may reside to support appropriate strategy and settlement.
Explore Asset Discovery >>Obtain evidence that may not otherwise be provable in or out of court—especially when other methods fall short.
Explore Surveillance >>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.
Contact us to get started and find out why clients choose NBI for high-accountability investigative support.

By: Michael D. Julian

By: Michael D. Julian