Learn How to Hire a Private Investigator in California
If you need to hire a private investigator in California, please use this list of private investigators and investigation agencies in the state. Before you hire a private investigator or agency in California, contact the appropriate state licensing authority to confirm current licensing information. To verify a private investigator license in the state, please visit the California Bureau of Security and Investigative Services website
To learn more about hiring a professional PI firm near you, and get more details on the costs involved, read our article Tips for hiring a P.I.
A & E DETECTIVE GROUP INC
A &E Detective Group is a California state-licensed investigative firm with over 30 years of expert-level experience. We believe every individual has a right to the truth and we extend our services to a wide range of clients, including large corporations, insurance companies, small businesses, and private citizens. No job is too small, no challenge too large — we can provide the consulting, legal support, and expert testimony you need to solve your most difficult problems. Our in-house attorney provides a full range of litigation services and we have professionally-trained affiliates worldwide, including forensic accountants, investigators and computer forensics technicians. To learn more about the specific services we offer, please visit our Services page now. Or, if you’d like to schedule a private consultation to discuss your situation, please call us today.
Advanced Research a global provider of employee background check and employment screening services. Our Employment screening background check will assist organizations in making informed hiring decisions.
Alias Confidential Investigations
Owner – Anthony W. Gubler / CEO / Lead Investigator
Address – 550 High Street Ste 209 Auburn CA.95603/Three Pointe Dr. Brea CA.
Telephone – toll free (877) 885-2624
FAX – (530) 885-5505
ACI is a full service detective agency specializing in covert surveillance operations. We cover the entire state with offices in northern, southern, and central California. CEO/Lead Investigator Anthony Gubler CPI #24642 has been conducting investigations in California for over 20 years and is a member of investigation associations such as C.A.L.I, P.I.C.A, N.C.I.S.S. and the World Association of Detectives to name a few. We offer efficient time management and cost effective investigations. Your costs are our concern.
All Cases Investigative Services
Owner – Alvin Brown, Owner
Address – 324 S. Diamond Bar Blvd #203, Diamond Bar, CA 91765
Telephone – 909-620-0139
FAX – 909-865-2200
PI LICENSE #24991
All Cases Investigative Service is a full service investigative firm located in Los Angeles County, but yet closed enough to service Orange, Ventura, Riverside, and San Bernardino Counties. All of our investigators are retired professional with law enforcement background and members of CALI. In today’s world we need to do everything possible to protect our family, property, and business interest using every conceivable tool. We provide the essential tools, and intelligence to protect your vital interest. “Whoever controls the information controls the situation.”
Anna Stowe Investigations
Private Investigator License Number: 21155
Description of Services:
Anna Stowe Investigations is fully licensed, bonded, insured, and specializes in helping individuals, law firms, and businesses. For individuals -If you need to find an old business contact, long lost relative, someone who owes you money, a beneficiary, we can help. For Law firms – we do it all – surveillance, photography, witness/victim interviews, vet and obtain experts, pretrial preparation assistance, gather docs and other necessary items and more. For businesses – we can check out that business partner, employee, or any other situation you can think of – we can help. We are based in Sacramento yet serve all of California.
Owner – Angelo Roman, Jr.
Address – PO BOX 703, San Dimas, CA 91773
Telephone – 909 564-2051/626 483-8601
FAX – 909 622-6580
Civil & Criminal Investigations. Specialize in personal injury &civil litigation cases. Over 25 years experience in the investigative and legal professions. Expert in new case sign-ups/intake for PI/Criminal matters. References available upon request. Fluent in Spanish. Available 24 hours a day 7 days a week. California Licensed PI 25037. Also licensed/registered/certified and bonded process server. Knowledgeable in many areas of the law.
A.T. Ulmer and Associates
Owner – Anthony Ulmer
Address – 2110 Artesia Boulevard, #310, Redondo Beach, CA 90278
Telephone – (800) 731-9231
FAX – (800) 684-0645
We are a full service private investigation agency licensed since 1992. We specialize in difficult locate investigations, difficult process service, surveillance, background investigations and asset investigations. We provide creative and cost effective solutions for the Southern California legal, insurance and business communities, as well as individuals. Call now for a free consultation. California License # 15416.
Beach Cities Protective Services World Wide
World Wide Security &Private Investigative Services
Security Guards, Armed/Unarmed , Off Duty Police Officers
Private Investigators Civil &Criminal Certified Criminal Defense.
#142669, #26016 , Member CALI, PICA, RPORAC, NA FEDERAL AGENTS, NAPTO,
Bear Witness – Private Investigators &Surveillance Specialists
California State License PI# 18755
Bear Witness (714)557-2327 is the #1 choice for a Private Investigator, Private Detective, &Private Surveillance in Los Angeles County, Orange County, &San Diego County, California. When Domestic, Marital, Civil, or Business problems arise, most people will turn to a Private Investigator for help. Unfortunately, like in any other profession, not all are created equal. Don’t gamble with the outcome of your important case. There is always too much at stake.
Contact Bear Witness – The Surveillance Experts in Southern California at (714)557-2327 or (877)PROOF-24/7.
We have helped hundreds of others obtain the information, evidence, and answers needed to make well-informed &important decisions. We invite YOU to be next to experience our tradition of excellence.
It’s your case. It’s your choice. Choose wisely. Call BEAR WITNESS now. Copyright 2006 BW. All Rights Reserved.
California Investigation Services
Locates, backgrounds, surveillance, domestic investigation, pre-trial investigation and polygraph testing. Member of the California Association of Licensed Investigators, Southern California Fraud Investigators’ Association and Association of Certified Fraud Examiners.
Owner – Intelligent Investigative Services
Address – 22287 Mulholland Hwy. #273 Calabasas, CA 91302-5190
Telephone – 818-881-5306
FAX – 818-474-7137
We are a full service California Licensed Investigative Agency. Our license number is 16729, CA. We are experts at locating witnesses, debtors, and lost loves. We also perform asset searches. We can collect judgments, and debt, throughout California, and nationwide. We have been in the PI Business for 15 years.
Roi W. Brown, retired LAPD with 35-years of service. A member of C.A.L.I. (CA Assoc. of Legal Investigators) and L.A.C.C.D.I.A. (Los Angeles County Criminal Defense Investigators Assoc.) is a full service private investigative agency. Specializing in information gathering for insurance companies, law firms &private individuals operating throughout CALIFORNIA, with an office in Southern California. We provide thorough, detailed, timely &cost effective investigations every time, for every client. All our investigations are conducted discreetly &privately under the “Guidelines of Conduct” established by the Bureau of Security and Investigations Services, which is a division of licensing, Sacramento, California. We are fully licensed, bonded &insured. We are also a registered Process Server for the County of Los Angeles #4635. California Private Investigator License. #20710
Chameleon Strategic Operations
Our actions are based on research and study. Sophistication and professionalism are the leading threads in our investigations as we continuously employ our creativity, imagination and experience in developing new strategies that will enhance our clients’ opportunities for success. Our services include: Background Investigations, Intellectual Property, Competitive Intelligence, Interviews, Undercover Operations, Surveillance
California Professional Licenses – CA PI # 23070
We are a full service agency providing Private Investigations and Protective Services.
Founder-Claude D. Ammons III
Corinthian Group is a Professional, Cost Efficient and Confidential Private Investigation Firm. Our mission is to utilize State of the Art Equipment, our Expertise and Integrity in providing our client with efficient results they desire.
Available Services: Attorney Investigations – We have all the tools needed to discreetly uncover the truth &dig into the heart of the matter. Whether you need sub rosa / surveillance, AOE/COE case investigation, background intelligence / research or any other related service. We have the professionalism, experience &organization to deliver irrefutable evidence that produce successful worker compensation &liability cases.
Insurance Investigations – Whether taking witness statements, conducting / coordinating multi-Investigator surveillance operations, uncover the needed intelligence for trial or any of the many tasks needed by law firms. CORINTHIAN GROUP Investigators are aware of such issues as attorney-client privilege, work-product protection and proper conduct when investigating opposing parties. We implement properly documented chain-of-evidence procedures for all gathered evidence.
Corporate Investigations – Every business faces situations where intelligence is needed to make good decisions, whether it is decisions about internal matters or decisions relating to the competition. You need an intelligence partner with the experience to get the job done and to deliver the product to you in a format that is user friendly and useful.
Case Monitor – Corinthian Group has created a Case Management system that our clients can visit where they can assign Corinthian Group Investigators cases, review newly completed reports and video of a specific claimant.
Member: C.A.L.I., N.C.I.S.S., P.I.C.A., S.C.F.I.A., W.A.D.
The Dillon Agency
The Dillon Agency is a FULL-SERVICE, Private Investigation firm located in Orange County California and is comprised of Law Enforcement trained investigators. We service all of the Southern California region as well as parts of Northern California, Nevada, Arizona, and international regions. Our areas of specialty are Family Law, Criminal Defense, Civil Law, Stalking, and Surveillance. As a LICENSED PRIVATE INVESTIGATION AGENCY and a member in good standing of The California Association of Licensed Investigators, Professional Investigators of California Association, and the Better Business Bureau, The Dillon Agency is here to serve all of your investigative needs.
Diversified Risk Management, Inc.
We are specialists providing employers with a high level of competence in all realms of employment related investigations for more than 500 companies, large and small, and legal counsel representing these employers. We investigate theft, drugs, harassment or other malfeasance in the workplace and provide excellent pre-employment backgrounds for employers. Outside California call (800) 810-9508.
Empire Pacific Investigative Services
Empire Pacific Investigative Services, Inc is a full service private investigation company specializing in Worker’s Compensation, Liability, Surveillance, Pre-employment backgrounds, Spousal Infidelity and Personnel Issues, such as time card fraud, theft, substance abuse, sexual harassment, and discrimination since 1992.
The Freeman Investigative Group, Inc.
President of the firm is a California Chief of Police (Ret.), FBI National Academy Graduate, with over 27 years of professional experience in the public and private sector. Our clients include numerous governmental agencies, law firms, and private individuals handling complex and confidential investigations. Full service Private Investigative Agency. Specializing in Personnel, Governmental, Family-Law, Litigation Preparation, Pre-Employment Background Investigations, DMV History Reports, Criminal History Research, Surveillance, GPS Tracking, Threat Assessment &Mitigation (stalking), with complete confidentiality and a proven track record of success. Fully licensed and insured. PI License 22354
Guard Grabber Technologies Inc.
Owner: Eugene Pulver
4860 Vieja Drive, Santa Barbara, CA 93110, United States
Phone: (805) 964-6672
Private Investigator License Number: On Demand Security Listing Service.
Security by Guard Grabber. Hire a Private Investigator or Process Server from your own community when your in need of immediate help solving your problems in real time. Guard Grabber has security guards and bodyguards to help with your security needs at a moments notice. Simply tap the security app and watch as private security comes to your location using GPS tracking. Your choice is easy with a five star rating system and all personal security credentials listed. Along with a photo you know who you’re getting before you book. In addition all hourly rates are listed so you know the up front cost before you hire. Download the Guard Grabber security app today and experience it for yourself. Looking for a security job the best security service where your the boss. Join Guard Grabber the fastest growing security app and list your own hourly wage today.
Guardian Protection Force Inc.
Owner: Garrett Thomas
3050 fite circle, Suite 107, Sacramento, CA 95827
Phone: (866) 921-9484
Private Investigator License Number: PI188127
Guardian Protection Force is a reputable licensed security and investigations company which specializes in executive protection. Guardian Protection Force maintains a professional staff with experience surpassing your average company. Some of Guardians specialties include risk mitigation, threat assessments, contentious terminations, surveillance and intelligence gathering.
Hernandez Investigations & Research
HI&R conducts investigative research for use by businesses, the legal profession and private individuals in the areas of civil fraud, monetary recovery, adversary evaluation, pre-employment screening, litigation discovery, problematic service of process, asset investigations and other informational demands of our clients.
Call or email for a free consultation to devise a prospective game plan to address your issue directly with John Hernandez.
Hodson P.I. Professional Investigations
When selecting a Private Investigator it is important to make the right choice. It is just as important to make the right choice of Private Investigator services. Hodson, P.I. provides a full list of professional private investigator services. We are a full service investigations firm with each specialty handled by a Licensed Professional Private Investigator. Our firm is headed by world renowned private detective Justin D. Hodson, CPI who has been conducting complex investigations since 1999. Hodson P.I. is a professional investigations firm founded in 2003. Surveillance, Background checks, Missing Persons, Financial Investigations, Family Law Investigations, Infidelity Investigations, Insurance Fraud Investigations, Automobile Accident Investigations, Service of Legal Process, Workplace Investigations, Theft, International, Online and Social Media Investigations.
Humboldt Investigations &Photocopy
Owner – Kerri Doebel, Office Manager/Webmaster
Address – 100 H Street, Suite 213, PO Box 2007, Eureka, California 95502
Telephone – 707-445-4171 or toll free 800-858-7741
FAX – 707-445-9118
Humboldt Investigations &Photocopy incorporates 25 Years of professional investigative experience with computerized research information and professional photocopy services to provide complete and comprehensive services. Located in Eureka, we serve Northern California and Southern Oregon, specializing in Workers’ Compensation and Civil Investigations.
JD STONE AGENCY
Address – 450 N. Brand Blvd., Suite 600, Glendale, California 91203
Owner – James D. Stone/President
Telephone – (818) 332-1394
FAX – (818) 475-1570
California P.I. License 23242
Expert private investigator and paralegal providing professional services to attorneys, corporations and private parties in Los Angeles and the greater Southern California area.
National Association of Investigative Specialists, (1988-2009)
California Association of Licensed Investigators (1988-2009)
FINANCIAL REPORT – $300.00 (Individual) or (Business)
LOCATION OF ASSET – $150.00 service charge, plus $250.00 per asset, plus direct expenses
IN-DEPTH FINANCIAL REPORT – fees start at $750.00
LOCATION OF INDIVIDUAL -$165.00 when located
SURVEILLANCE – $60.00 to $100.00 per hour, plus $0.50 per mile
PROCESS SERVING – $75.00 For routine process serving in Los Angeles County. For difficult process serving, quotes are available on a per case basis.
BACKGROUND INVESTIGATIONS – The average fee for these reports is $500.00. This includes all court cases, criminal and civil.
Liberty Investigative Services
Address – 13351-D Riverside Drive #593, California
Owner – Jeff Alexander, Private Investigator
Telephone – 818 430-1916
FAX – 818 430-1916
Liberty Investigations offers many investigative services to the private and legal community. We are specialists in surveillance, insurance fraud and workers compensation cases.
Owner – George Karonis
Address – 29021 Ave Sherman STE 103 Valencia CA 91355
Telephone – 661-294-6805
Live GPS tracking, best of breed GPS tracking equipment for PI’s. Live PT-10 tracks every 10 seconds.
Mark Pierce Investigations
Mark Pierce Investigations is a full service investigation agency located in Riverside County California. Serving all of Southern California, the entire U.S.A. and some other countries. We specialize in, but not limited to: fugitive warrant investigations, fugitive recovery, bail bond investigations, runaway child investigations, cheating spouse, stalkers etc.
California P.I. License #25745
Montano & Associates International Investigations PI 8169
In 1980, following a successful Loss Prevention career working for major corporations and previously as a dedicated Law Enforcement Officer, Nickolas Montano, Jr., CFE, CFS, CHS III, CII, CPI, CSP, CIP established Montano &Associates International Investigations an investigative agency licensed by the State of California Department of Consumer Affairs. For his Multi-National corporate Clients, as Owner and Investigations Director, Mr. Montano employs his experience directing Brand Protection, Anti-Counterfeiting and Safety programs. Focusing on embezzlement, trade secret and intellectual property protection, Mr. Montano’s Clients enjoy the benefits of his extensive corporate investigative knowledge. World wide coverage of all your investigative needs.
Pre-Employment Background Screening
Quinn & Associates Confidential Investigations
Quinn &Associates is a professional investigation service agency centrally located in Orange County California. Mr. Frank Quintanar Jr directs Quinn &Associates. Frank Quintanar is a seasoned experienced licensed private investigator with over twenty eight (28) years of experience. We engage in all types of investigations, civil and criminal.
We are dedicated to providing the highest quality investigation service available. We have completed numerous assignments for various government agencies, fortune 500 companies, insurance companies, attorneys at law and the private sector. Our work has been found to be highly satisfactory.
We take pride in our work. Our reports are factual, accurate, thorough, and are completed and sent out promptly. Recommendations whenever applicable as to the results of our findings are always included for your consideration.
We are confident that you will find our fees to be reasonable and competitive.
RLM Mediation and Investigative Services
License Number #28001
Workplace Investigations (specialty), Employment investigations
Robert A. Celano Private Investigations
Owner – Robert A. Celano
Address – 5926 Temple City Blvd., Suite E, Temple City, CA 91780
Telephone – (626)287-8676
FAX – (626)287-4757
CA license #PI-10427
Full service investigation firm, , since 1984. Specializing in all aspects of investigation, including, but not limited to, Criminal, Civil, Personal Injury, Skip-Tracing (Locates), Surveillance, Document Research, and Service of Legal Process. The Principal, Mr. Robert A. Celano, is a retired member of the Los Angeles County Sheriff’s Department, having devoted twenty (20) years of service therein, and since that time, he has enjoyed a very reputable tenure as a Private Investigator, having conducted investigation in several high profile celebrity cases. Mr. Celano is qualified to testify at all levels of the judicial system. Memberships include: Professional Investigators of California (PICA)-Charter Member, California Association of Licensed Investigators (CALI), Florida Association of Private Investigators (FAPI), and Association of Investigative And Security Specialists (AIASS).
Source Investigative Group
Owner – Thomas Nixon – President
Address – 409 N. Pacific Coast Hwy #636, Redondo Beach, California 90277
Telephone – 888-436-0056
FAX – 888-436-0055
California Private Investigation License No. PI 22382
Source Investigative Group is a California Licensed and Bonded Private Investigation Firm consisting of former Federal, State and Local Law Enforcement Agents. Source Investigative Group Specializing in Complex Financial Investigations, Corporate Due Diligence, Background Investigations and Environmental Investigations.
Members of CALI, PICA, Assn of Certified Fraud Examiners and California Sheriffs Association
Steacker Investigations & Associates
Owner: Clayton Steacker
3130 Balfour Rd. Suite D#191, Brentwood, CA 94513
Phone: (925) 324-3408
Private Investigator License Number: CA PI 22428
Description of Services:
I conduct criminal, civil, background, workplace and private investigations. I have over 20 years of experience as a Police Officer in California working as a patrolman, detective and retiring as a District Attorney Investigator. I pride myself on customer service providing personalized service to every client on every case.
Owner – Toby K. Bogges, PI 24404/ PPO 16192
Address – 37221 Avenue 12 Suite 1C-39 Madera Ranchos, CA 93636
Telephone – 559.232.8700
Synergy Associates is a fully licensed and insured investigations, surveillance and personal protection company located in the center of California near Fresno. We can provide armed protective services with firearms or less than lethal weapons, plainclothes or uniform. Agriculture crimes and protective surveillance are a specialty. Our Worker compensation fraud sub-rosa and video surveillance techniques have resulted in multiple criminal prosecutions and positive outcomes for our clients. We are trained and experience in AOE/COE interviews as well as theft and embezzlement interrogations.
Tactical Surveillance &Investigations
Full service private investigation firm with years of federal and civilian law enforcement experience. We specialize in surveillance, but also offer the following services:
Surveillance, Counter surveillance
Employee theft investigations
Work place violence issues
Child custody issues
Infidelity / cheating spouse
AOE / COE
Workers’ comp fraud
Multi investigator surveillance teams
CA PI #25451
Address – 12030 Washington Blvd. Suite 200, West Los Angeles, California 90066
Owner – Bruce Robertson, State Certified Qualified Manager
Telephone – 310-390-0947
FAX# – 310-390-0788
Headquartered in Los Angeles, Tristar Investigation is a full service detective agency with a 22 year history of producing positive results for our clients. We offer private investigation services to the business, legal, and insurance communities and to private parties. Our services range from spousal surveillance and background investigation, to finding missing persons, difficult service of process and asset research. We also provide legal support services to some of the leading law firms in the country. An experienced licensed private investigator is the key to solving your investigation project. In addition to serving California, we offer services nationwide, and worldwide through our affiliates and professional associations.
Walker Confidential is a licensed private investigation agency offering an extensive array of services to a wide range of clients; serving attorneys, insurance carriers and private clients throughout the entire State of California. Our staff members are licensed California private investigators with extensive investigative experience, including criminal and civil issues, insurance fraud, witness locates &interviews, covert surveillance operations, background screening and more.
CA Lic #26907
ASSET SEARCHES, SURVEILLANCE, BACKGROUND CHECKS, DUE DILIGENCE, ASSET INVESTIGATIONS, MISSING PERSONS, LOCATES, PROCESS SERVING, CIVIL LITIGATION,WITNESS INTERVIEWS
Private Investigator San Diego specializing in Cheating Spouse Investigations, Background Checks, Finding People, and Business Investigations.
State License # PI 18932
Member of CALI
Member of PICA
Worldwide Intelligence Network
Forty years of investigative experience combined with an investigative staff consisting of retired intelligence agents and police detectives located across America and throughout the world open many doors to vital intelligence you require. Our intelligence gathering and investigative skills are unparalleled and we have the references to prove it. We are a full service Private Investigative Agency providing exceptional Investigative and Executive, Celebrity and Personal Protection Specialists to clients anywhere and anytime Our clientele consists of attorneys; public corporations; business entrepreneurs; the entertainment industry and individuals. Our Risk Assessment and Risk Management Teams are among the most experienced and regarded in the world. Our integrity is proven by our performance.
Owner – Walt Stewart
Address – 31726 Rancho Viejo Rd. Ste # 106 San Juan Capistrano, California 92675
Telephone – 800.504.1284
FAX – 949.489.7758>
California P.I. License 25530
We work cases Nationwide with experience you can trust. Located in San Juan Capistrano, Ca. WS investigations, Inc. is a full service private investigation agency and your source for trusted professional investigators. We provide fast professional and affordable investigative services. With over 20 years of experience in all different types of investigations, we have the skills and resources to handle all your investigative needs. The owner of the company is a retired police officer starting as a patrol officer, Detective Juvenile Division, Detective Criminal Investigation Division Violent Crimes, Major fraud, and Detective Lt. in charge of Narcotics and Vice. Please view our website for further information.
If you have any questions before you hire a private investigator in California, please leave a message below.