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Northern California Private Investigator

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

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

When choosing a Northern California private investigator, 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 Northern California private investigator service available. That’s why our Northern California private investigator agency is staffed with police-trained and seasoned professional private investigators.

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

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

John A. DeMarr, P.I. is one of the most widely respected private investigator agencies in Northern 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 investigator firm that will help you in every way that we can.

More About Our Northern California Private Investigator Services

For Your Information

  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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