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Due Process Chicago Offers Personalized Service for Your Private Investigative Needs

When you find yourself in a situation that calls for important information that you need help obtaining, turn to the private investigators at Due Process Investigations. As one of the most trusted private investigation agencies in Chicago, Illinois, Due Process is a privately owned and operated, State of Illinois licensed private detective agency offering a wide range of professional private investigation services, including corporate investigations, fraud detection, surveillance, background checks, due diligence, and litigation support. Using the most innovative strategies and resources available, our professionals are skilled in what it takes to produce effective results for their clients. We have been servicing the metro Chicago area for more than 30 years and have become one of the most trusted names in the industry.

Who We Are

At Due Process Chicago, our detectives come from diverse backgrounds of experience that contribute to their effectiveness as private investigators. We draw from the very best of federal, state and local law enforcement agencies and departments, and we proudly employ many military veterans. Our detectives have impeccable records and extensive investigative experience. All investigations are conducted confidentially, with integrity, reliability and professionalism. Our investigators have received commendations from law enforcement agencies, judges, district attorneys, defense attorneys and private clients. Due Process has access to a national network of investigators, including the Federal Criminal Investigators Association, the Federal Law Enforcement Officers Association, and other professional investigative and security associations.

What Sets Us Apart

• A single minded focus on private investigation We specialize in one thing…

• A demystified approach to private investigation No secret-squirrel stuff…

• A straight-forward relationship with our clients Decades of working…

• A clear presentation of findings No data dumps…

• A high ethical standard We pay strict attention…

• Strict budgets and tailored billing methods We communicate clearly…

What We Do

At Due Process Chicago, our investigative team operates with a disciplined, professional approach shaped by years of real‑world experience. We maintain a culture of integrity, discretion, and reliability, ensuring every matter is handled with the highest level of professionalism. Our investigators are recognized for their sound judgment, thoroughness, and commitment to delivering accurate, defensible results. Through longstanding relationships with respected investigative associations and professional networks across the country, we are able to support clients with dependable resources, broad reach, and trusted expertise.