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.

  • Law Firms
  • Third-Party Administrators (TPAs)
  • Insurance Companies
  • Corporations
  • Private Companies
  • Municipalities
  • Educational Institutions
  • Public Utilities

National Business Investigation, Inc. specializes in providing investigative services for:

National Business Investigations, Inc. - Areas of Operation

National Business Investigations, Inc. (NBI) provides investigative services in the California, Colorado, Nevada, Texas and Florida.  However, through our strategic partnerships we can provide services throughout the United States.  NBI also operates internationally for particular services and support.

NBI employs skilled investigators in California, Nevada, Texas and Florida.  We operate heavily in San Diego County, Riverside County, Orange County, Los Angeles County, and San Bernardino County and maintain a network of investigators throughout California, Nevada, Texas and Florida.  Our corporate office is located in Murrieta, California.  The Murrieta and Temecula areas are growing business and industrial hubs of Southern California and allows NBI to effectively offer investigative services to the Southwest Region of the United States.


California | Colorado | Nevada | Florida

San Diego County | Riverside County | Los Angeles County | Orange County | San Bernardino County | San Francisco County | Clark County | Miami-Dade County | Murrieta | Temecula | Riverside | San Diego | Los Angeles | San Francisco | Seattle | Miami | Las Vegas

CA PI Lic # 21463 | NV PI Lic # 1383 | FL PI Lic # A1200285