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About Us

Excell Investigations is known for providing some of the finest and most reliable private investigation services in Southern California. Our firm offers background checks, credit checks, asset searches, record searches, skip tracing, undercover surveillance, polygraph testing, process service, and more. Over the last two decades, we have worked with 1,000s of satisfied residential and commercial customers throughout Riverside County and San Bernardino. We have an office in Downey and has access to a network of investigative agents all over the world so that we are prepared to handle investigations anywhere they may take us.

About Our Founder

Excell Investigations was founded in 1992 by Willie James Leggett. Leggett started his career in the military where he proudly served as an Intelligence Officer in the Vietnam War. Following his military career, Leggett obtained his private investigator’s license and went on to successfully conduct investigations throughout the U.S. and several other countries. Over the last 20 years, Leggett has also served on a panel of Criminal Investigators for the Superior Courts of Los Angeles and Orange counties, where he gained considerable experience providing litigation support for a variety of civil and criminal cases. He has the added experience of working with several of California’s top defense attorneys and has been instrumental in a number of high-profile legal cases. With his investigative background, he has the expertise to ensure his team upholds the highest of industry standards and obtains accurate, admissible evidence for use in litigation and pre-litigation.

About Our Team

Our private investigators not only are licensed by the California Bureau of Security and Investigative Services (BSIS) but also have extensive, on-the-job experience. Our investigators average 10+ years of experience and most come from a law enforcement, military, or federal investigation background. Some even have direct experience in the robbery, homicide, fraud, and/or ID theft divisions of the Los Angeles and Orange County Sheriff’s Department. As such, our investigators typically specialize in the areas related to their past work experience and training. Additionally, we have a team of licensed process servers who have the resources and tenacity to ensure proper service.

At Excell Investigations, we are committed to customer satisfaction. We treat every case with the utmost discretion; uphold client confidentiality; keep our rates as competitive as possible; work diligently until a case is resolved; and provide excellent customer service.

To learn more about why we are your best choice for private investigations and process serving, give us a call today.

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Let our experienced Private Investigators review your case at no cost. Qualified Investigator


Click on our association logos to visit their websites.

Los Angeles IPIU Professionals
Lawmate America Innovation
Professional Investigators Association
Association of Excellence
WAD Certified Professionals Qualified Investigator
Excell Investigations Business Listing

Our Locations

8105 2nd St. Downey,CA 90241

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Downey Private Investigators
Private Investigators Orange County

333 City Blvd West, 17th Floor Orange, CA 92868

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Tustin, Orange County Private Investigators

17581 Irvine Blvd Tustin, CA 92780

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Los Angeles Private Investigators

3415 S Sepulveda Blvd, Ste #1100 Los Angeles, CA 90034

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We handle Investigation cases in Los Angeles, Orange County, Inland Empire and other surrounding areas in California.
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