Business Details
50+ Years
experience
Emergency
services
Trusted Private Investigation Services in Murrieta, CA
National Business Investigations has been a family-owned and operated private investigation firm since 1967, delivering comprehensive investigative services to corporate, legal, insurance, and individual clients. Our expertise spans asset discovery, surveillance, due diligence, cyber forensics, and executive protection, supported by a team of certified professionals with decades of combined experience. We maintain strict adherence to ethical standards and hold affiliations with leading industry organizations, including the California Association of Licensed Investigators and the World Association of Detectives. Our commitment to discretion, integrity, and results-driven service has earned us recognition as California's top private investigation firm. With strategic partnerships across the U.S., we provide nationwide coverage while maintaining personalized attention to every case.Our proprietary methodologies and advanced technological tools ensure accurate, legally compliant evidence collection. Clients benefit from our 50+ years of experience in resolving complex investigations, saving millions through fraud detection and asset recovery. We guarantee performance through a no-risk client satisfaction policy, ensuring transparency and accountability in every engagement.
Services
Surveillance Operations
Legal Investigations
Asset Searches
Background Checks
Workers' Comp Fraud
Computer Forensics
Executive Protection
Corporate Investigations
Details
- Year established: 1967
Highlights and features
- Over 50 years of experience in private investigations since 1967
- Certified investigators with law enforcement and military backgrounds
- Nationwide service through strategic partnerships and local offices
- No-risk guarantee: Pay only what you believe our investigation is worth
- Proven track record saving clients hundreds of millions through fraud detection
Associations and certifications
- California Association of Licensed Investigators (CALI)
- National Council of Investigation and Security Services (NCISS)
- World Association of Detectives (WAD)
- Southern California Fraud Investigators Association (SCFIA)
- Certified Professional Investigator (CPI)
What people say
Perfect service
Outstanding service
Highly recommend
Great customer service
Professional and friendly
Services
Surveillance Operations
Our surveillance services provide critical evidence for legal cases, insurance claims, and corporate investigations. Using advanced equipment and discreet methods, we document activities through video and photography to support civil litigation, workers' compensation fraud detection, and domestic cases. With over 45 years of experience, our investigators ensure admissible evidence collection while maintaining strict confidentiality.
Legal Investigations
We support legal professionals with witness locates, evidence analysis, and financial record investigations. Our team specializes in preparing cases for civil litigation, including asset recovery and fraud detection. Certified investigators work closely with attorneys to gather court-admissible evidence, with expertise in cyber forensics and background checks for high-stakes legal matters.
Asset Searches
Our asset discovery services help clients identify hidden assets for pre-litigation, legal proceedings, or debt collection. Through public records analysis and field investigations, we track financial holdings across jurisdictions. This service supports law firms, insurance companies, and corporations in recovering owed funds and assessing financial exposure during legal disputes.
Background Checks
We conduct comprehensive background investigations for executive hiring and corporate security. Services include criminal record checks, employment verification, and financial history analysis. Our due diligence process helps businesses mitigate risk by identifying potential red flags in candidate backgrounds, supporting informed hiring decisions for critical positions.
Executive Protection
MPS Security, our specialized division, provides executive protection services for high-profile individuals. Services include threat assessment, event security, and hostile termination management. With personnel trained in risk mitigation and crisis response, we offer customized security solutions for celebrities, corporate leaders, and public figures requiring discreet, professional protection services.
People
Michael D Julian
President
Certified Professional Investigator with 30+ years of experience. Served as CALI President and developed advanced surveillance techniques. Specializes in corporate investigations and executive protection services.
Ron Julian
Founder
Established NBI in 1967 after law enforcement career. Pioneered insurance fraud investigations and built firm's reputation for integrity. Recognized industry leader until his passing in 1997.
Questions
What types of investigations do you specialize in?
We specialize in corporate investigations, legal support, surveillance operations, asset recovery, background checks, and executive protection services.
How long has your firm been in business?
National Business Investigations has operated continuously since 1967, making us one of the oldest private investigation firms in the United States.
Do you operate outside California?
We provide services throughout the U.S. via offices in California, Nevada, Florida, and strategic partnerships nationwide, with international capabilities for specific cases.
What payment methods do you accept?
We offer flexible payment arrangements for our investigative services. Please contact our office for specific billing options.
Are your investigators available 24/7?
Yes, we provide 24/7 emergency investigation services with immediate response capabilities for urgent client needs.
What guarantees do you offer?
We guarantee our performance through a no-risk policy: Pay only what you believe our investigation is worth if unsatisfied.
Reviews (3)
Diedre Quenell
Aug 20, 2019
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NBI is dedicated to providing excellent service. Are you looking for Legal, Insurance or Corporate Investigations, Surrveillance, Pre-Employment Checks, Background Investigations, Locate Services or Asset Searches? NBI is a family owned and operated firm that has been in business for over 51 years. Call today and let us know how we can assist you with your investigative needs.
Lisa Pons
Dec 10, 2014
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NBI is a great place to work. We care about our clients and the service they receive and take pride in doing the best job possible. Give us a call and let's discuss the excellent service we can provide for you and your company!
Rhonda Warner
Nov 22, 2014
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The Murrieta Chamber of Commerce has been using National Business Investigations for years and there is a reason why. It's because they are the best! We help to run a three day Irish Music Festival in our City and always trust this company with all of our security needs.Their staff is fully in charge of making sure our event runs smoothly for all staff, volunteers and the public. The attendance this year was 8,000 people and not one problem. They are professional and friendly-always! But can flex the muscle if ever needed. We highly recommend National Business Investigations!
Rhonda Warner
VP
Rhonda Warner
VP
