Celebrating Over 30 Years

Our Story
Since 1987 we have been a locally owned and operated investigation firm in the Central Valley of California. PDA has evolved into one of the most effective private investigations firms on the west coast. Watch video to learn more about PDA!

Investigations
PDA is a full service investigative agency that provides professional, ethical, and competitive investigative and security services.

Ag Security
Busy lifestyles can sometimes cause us to overlook possible security breaches in an around our homes, businesses and many other places less likely to experience theft. Even when we are at our most alert things happen. Contact us to help combat theft before and after incidents. We have helped many individuals recover thousands in assets and have prevented millions in losses.

Personal Security
The most reliable and professional security services in California’s Central Valley! Corporate, plain clothed, former law enforcement, professional officers and military police. Available 24 hours/7 days a week.
Featured Stories
Suspect sought in Valley jailed in South Africa for rhinoceros poaching
The Big Cow Con
Citrus thieves. Honey embezzlers. Raisin scammers. Fertilizer fraud. Detective Rocky Pipkin thought he had seen it all — until he discovered Arno Smit…Read More