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We've all seen private investigators portrayed in the movies and on TV-but what is it that these fact-finders actually do in real life? Simply put, private investigators work to uncover fraudulent or criminal activity, usually on behalf of a litigator or a private individual. And in the State of California, there are countless situations where this kind of work might be invaluable.
If you need private investigators in California, make sure you reach out to a veteran firm that can offer quick, comprehensive results without running afoul of any state laws. That's where National Business Investigations comes in. We have been a California private investigator firm for decades, and have both the skill and experience you need to uncover the truth.
NBI is a specialized investigations firm with access to the best resources available to quickly and efficiently expedite your investigation. For over 50 years our team has successfully worked with thousands of clients to perform investigations to obtain the information they needed. These clients include:
For a licensed private investigator in California, NBI has all the resources and experience you need.
There are a number of potential reasons why one might hire private investigators in California. Some of the more common scenarios include:
These services include work done both for individuals as well as law offices; we are proud of the partnerships NBI has established with litigators across the state. NBI is also highly experienced in corporate investigations of all kinds.
National Business Investigations has decades of experience as a California private investigator. We employ a team of professional investigators who receive the highest level of training, and who are seasoned in their role as fact-finders and records researchers. In addition, we have deep familiarity with the California laws that govern these investigations, and can assure clients that all of our services comply with all pertinent regulations.
We are proud to have skilled investigators not just in California but throughout the country, providing a full scope of investigative services. To learn more about our legal investigation services, or to hire private investigators in California, we invite you to contact NBI today.
NBI offers clients an easy-to-use interface, where requests for an investigation can be uploaded through a secure online platform and them begun with expediency. Additionally, we accept work orders by phone, email, or fax.
The actual scope of an investigation can vary simply by the nature of that investigation, but we always go above and beyond to ensure thoroughness. Often, this involves a rigorous look through public records, which might include:
Additionally, our investigators perform covert, private surveillance when needed, always ensuring that we stay within the proper legal parameters.
Our investigators are highly trained in conducting clean and efficient investigations, and that's made us the investigation team of choice throughout California. To learn more about licensed private investigators in California, we encourage you to contact NBI today.
National Business Investigations, Inc. (NBI) provides investigative services in California, Colorado, Nevada, Washington, Texas Arizona 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 highly skilled investigators in California, Nevada, 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, and Florida. Our main 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
MPS Security, a division of National Business Investigations, Inc. (NBI), is a full-service security firm currently licensed in California, Colorado, Washington, Arizona, Nevada, Texas and Florida focused on physical and asset security using Uniformed Security Officers and Plain Clothes Executive Protection Agents for site security, events, residential and commercial properties, access control, security patrols, loss prevention, fraud detection and undercover officers.
MPS Security specializes in providing high-end security services such as Hostile Termination Protection, Reduction in Workforce Security, Labor Union Unrest and Strike Security, Asset Protection, Personal Protection, Estate Security, Corporate Event Security, and Risk and Threat Management Services throughout the US.
We focus on client outcomes by providing professional Uniformed Security Officers and Plain Clothes Executive Protection Agents that enhance security and safety at residential, retail and workplace environments. Our trained staff and officers focus on your needs to provide a custom security plan. We will staff your location with officers and agents that understand the unique nature of your security concerns and vulnerabilities in your home and work environment. Let us show you how MPS Security can make a difference for you.
MPS Security provides Uniformed Security in four Western States (California, Arizona, Nevada, Washington), Texas, Colorado and Florida, however through our strategic partnerships we can provide services throughout the United States. MPS Security also operates internationally for particular services and support.
Though our main operational is based in Southern California and operate heavily in San Diego County, Riverside County, Orange County, Los Angeles County and San Bernardino County, MPS Security maintains uniformed security and executive protection operations in multiple states. Our corporate headquarters is located in Murrieta, California. The Murrieta / Temecula area is a growing business and industrial hub of Southern California and allows MPS Security to effectively offer uniformed security coverage to the Southwest Region of the United States for Guard Services, Uniformed Security Officers, Security Guards, Armed Security, Unarmed Security, Site Security and Event Security.
Contact 866-678-4408
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.

Corporate investigations are professional inquiries conducted to uncover facts, verify information, and resolve issues within a business environment. …
By: Michael D. Julian

By: Michael D. Julian