Licensed Investigations - CA. PI. #28059


"Focused, credible and actionable professional investigations."

GRI INVESTIGATIONS (GRI) is a California licensed private investigations agency specializing in civil, legal and family law investigations. We are a leading provider of investigative and research services for law firms, corporations an private clients. We have a team of qualified investigators with an expertise in locating actionable evidence and information for our clients in a discreet and confidential manner. Our investigators have extensive training and experience in a variety of investigative areas, which enables us to complete concise and comprehensive investigations. Part of this process includes educating our clients about investigative protocols and discussing potential obstacles in obtaining a proper investigative outcome. Our main goal and objective is to conduct unbiased and impartial investigations by utilizing fact-finding methods that assist our clients in making proper legal and business decisions. Please note that we don't take on all investigative requests unless we feel we can deliver a precise work product. Call (888) 519-0555 to speak with one of our licensed investigators to discuss your case goals and objectives. All calls are considered privileged and/or confidential communications.

Investigative Services:

  • Civil & Legal Investigations
  • Family Law  Investigations
  • Criminal Defense Investigations
  • Personal Injury Investigations
  • Corporate & Business Investigations
  • Internal Workplace Investigations
  • Surveillance & Covert Investigations
  • Security Consulting & Safety Training

Member of the California Association of Licensed Investigators (CALI)

Specialized Services:

  • Background/Criminal Checks & Due-Diligence Investigations
  • Service of Process; Evasive and Difficult Serves
  • Scene Investigations; Photographic & Video Documentation
  • Cohabitation Investigations per CA. Fam. Code 4323 (a) (1)
  • Child Visitation; Custody Welfare & Activity Checks
  • Witness Locates; Interviews; Documentation
  • Internal Business & Corporate Investigations
  • Social Media & Internet Investigations

Member of the California Defense Investigators Association (CDIA)


Leadership and Experience that matters.....

MARC A. GARZA, Founder & CEO , GRI Investigations 

Marc is a licensed private investigator and a retired police sergeant with over 20 years of service in San Diego County. He specializes in civil, legal and family law investigations for law firms, corporations and private clients. During his law enforcement career, he developed his extensive knowledge and experience from conducting public sector investigations. He has completed thousands of hours of legal, investigative and surveillance training from federal, state and municipal agencies, such as the FBI and CA. POST.  As a private investigator, he has assisted legal counsel with investigations and research in numerous civil litigation and felony defense cases filed in the Superior Court of California, U.S. District Court and U.S. Immigration Court. He is a member of the California Association of Licensed Investigators (CALI) and the California Defense Investigators Association (CDIA). He is licensed & insured by the California Bureau of Security and Investigative Services (BSIS) under Licenses #PI28059, #TIF2591 & #G6465645. 

RICHARD FERRELL, Lead Investigator & Trainer, GRI Investigations

Richard is a licensed private investigator and a retired police officer with over 20 years of combined experience in law enforcement, consulting and security training. He specializes in conducting surveillance and legal investigations for law firms and corporations. During his law enforcement career, he held assignments in patrol, firearms and tactical training. He has an expertise in conducting training for the prevention and mitigation of active shooter events within the educational environment and faith-based groups. He has extensive knowledge in security operations, vulnerability assessments and consulting. As an investigator, he uses integrated technologies and "cutting-edge" investigative methods when conducting surveillance and legal investigations. He is licensed by the CA. Bureau of Security and Investigative Services under (BSIS) PI License #188696 and PPO License #120729.


"What clients are saying...."

"We are extremely pleased with Marc & his company's efforts on our case. Their work product is excellent. I would highly recommend Marc for anyone needing his expertise." 

Katharine Tremblay Beck
Tremblay Beck Law

"Mr. Garza is a professional , experienced and efficient private investigator. I have used his services on many of my cases. I highly recommend his investigative services"

Jose Orozco
Orozco Law Firm, APC

"Whether our office has a civil dispute, divorce case or immigration matter, GRI is the first call we make when we need information or evidence that's difficult to obtain."

Ed Perez
Law Offices of Ed Perez. PLLC

"I always send my clients to GRI. Marc is always very responsive. He has helped many of my clients out. I would highly recommend his investigative


Laura Talamantes
Talamantes Law Firm, APC


For more information about our services please fill out the contact form below and your inquiry will be answered promptly. You may also call (888) 519-0555 for further information. All calls are confidential.


CA. BSIS 28059



Venture Commerce Center

2566 Catamaran Way, Suite #54

Chula Vista, California 91914



P.O. Box 212967

Chula Vista, CA 91921

(888) 519-0555

Copyright © 2020  GRI Investigations - All Rights Reserved.  

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