Detectives in Oakland, CA

Comprehensive list of private detective agencies and investigators servicing Oakland, CA.

Business Listings

Monument Security has been a premier supplier of Security Solutions for 23 years. We have established our reputation on specialized solutions and rapid response to our customers' highest priorities. We know that quality of response and comprehensive service is synonymous with customer trust.


Mike Spencer began Spencer Investigations after having worked for few years at daily newspapers in Florida and California as an award-winning police and investigative reporter. As a reporter, he covered Hurricane Andrew in Miami, the East Bay Hills wildfire and some high-profile criminal cases. He gained a master's degree from U.C. Berkeley before embarking on his career as an investigator.


Harris Investigations specializes in asset search, people finder, people search in California, bank account search, missing persons and attorney services in California. Harris Investigations can assist you with criminal investigations in California, residential investigation in CA, cheating spouses and workers compensation investigation in California.



Mason Investigative Group executes discreet, effective investigations for lawyers and businesses. Our investigators delve into complex, high-stakes and often high-profile matters both domestically and around the world. We're distinguished by how speedily we absorb the intricacies of new cases, the active role we play in crafting strategy with counsel and customers, and the clarity and precision of


We supply services to insurance carriers, 3rd party administrators and self-insured employers. We utilize the latest digital technology to document our investigations.


Since 1991, Bay Consulting Group has been delivering professional investigative services across the San Francisco Bay Area and nationwide. Although Bay Consulting Group encompasses the full range of investigative services, our specialties are in the fields of Corporate Fraud Investigations, AOE/COE, and Sub-Rosa Surveillance operations throughout California and beyond.


Investigative, Video Forensic and Identification Services. Live Scan Fingerprinting, Child ID, GPS Tracking, Child Protection, Domestic and Infidelity Investigations, AOE/COE, Surveillance. THEIA was the Titan goddess of sight (thea) and shining light of the clear blue sky. She was also, by extension, the goddess who endowed gold, silver and gems with their brilliance and intrinsic value. Theia married


Sullivan Associates International was set up in San Francisco, California in 1990. Our agency employs very experienced, bilingual investigators. In 1998 we opened a 2nd office in Rio de Janeiro, Brazil. The founder of the agency, David Sullivan, has over 30 years knowledge in Latin America.