John Demarr Private Investigators
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:: California Private Detective ::

Founded in 1988, John A. DeMarr, P.I. has developed a reputation as one of the most successful and reliable private detective agencies in California.

Our California private detective staff has over 75 years of combined experience. We belong to the most prestigious private detective organizations in California including, the California Association of Licensed Investigators, the World Association of Detectives and the Florida Association of Detectives.

When choosing a California private detective, it is important to know that they use successful and ethical methodologies. We guarantee that all information developed in the course of our searches is obtained in a legal, ethical, honest and professional manner.

Our promise to our clients is that they will receive the best overall professional California private detective service available. That’s why our California private detective agency is staffed with police-trained and seasoned professional investigators.

We're trained to deal with all aspects of private investigations and security.

The following services are brought to you from the experts at the John A. DeMarr Private Detective Agency:

John A. DeMarr, P.I. is one of the most widely respected private detective agencies in California. Our firm assists the insurance industry, legal profession, Fortune 500 Corporations, as well as small businesses and individuals all over the world.

Please look at our Success Stories and you will be convinced that we are a skilled private detective firm that will help you in every way that we can.

More About Our California Private Detective Services

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  1. Conducted in the county where the subject resides. Additional searches available.
  2. We conduct one search based on the name and address provided.
  3. Must meet FCRA requirements.
  4. Restrictions apply, call for details.
  5. Additional services are available. Contact us for a free consultation.




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Please include this form with your order. Call us with any questions.


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Call us with any questions at 877-4-DeMarr or 877-433-6277