Castillo Research is Peace of Mind.

Over 20 Years Experience In Investigation & Research


We are here to help with your background checks, no matter where you live in the United States.

Submit your background check request today. It's easy to get started either online, by phone, or by fax.

Industry Leaders

Castillo Research are the trusted leaders of Background Research & Investigation.

We've completed thousands of background checks for hundreds of companies across the United States.


Our background in criminal justice is extensive and diverse, with experience in several different fields.

Our team has over 20 years of experience in background research and investigation.


You won't find a more knowledgable or dedicated team of investigators than Castillo Research.

We have degrees in Criminal Justice & Social Work, and university-level training in Criminal Background Research.