Terheyden Investigations
395 S. Hwy 65, Suite A-110
Lincoln, CA 95648
Office: 916-543-7066
Fax: 916-543-7067
CA PI # 16244
AZ PI#006005


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About Us

Servicing the San Francisco Bay area since 1993 and now the Sacramento area as well, Terheyden Investigations provides professional, confidential investigation services.

Owner, Raymond S. Terheyden, started his firm after more than 20 years of military and police investigation experience. Using his skills and training, he provides top-notch investigative work for attorneys, corporations and private parties. With a specific focus on the legal community, Ray uses his wide network of contacts to provide his clients strong results on witness locates, asset searches, background checks and more.

In addition to his investigation services, Ray served as the District Govenor for the San Jose District of the California Association of Licensed Investigators. His participation ensures that not only is he on the cutting edge of investigative techniques, he also is an active participant in advocacy programs affecting his industry. Ray is also a member of the Professional Investigators of California. That affiliation translates into better results and a wider network of experts for his clients.

Ray is a licensed commerical pilot and utilizes a wide variety of investigations tools and techniques to serve his clients. With his personal philosophy that factual information is the key to establishing justice, he pursues his goal of discovering and disseminating information in a way that develops trust with his clients. With respect for confidentiality and privacy, Ray Terheyden is available to discuss your case and establish a course of action that meets your need.