Welcome to

Tri County
Investigations

Group, Inc

About US

Tri County Investigations Group, Inc est. 1976 in Hinsdale, IL is a fully bonded, insured and state-licensed detective agency located in Willowbrook, Illinois. For over 40 years, Tri County Investigations has proudly provided legal support services to both attorneys, and individuals throughout the state of Illinois. We pride ourselves on the notion that each and every document deserves the upmost attention to detail.

Services

 Tri County Investigations Group, Inc est. 1976 in Hinsdale, IL is a fully bonded, insured and state-licensed detective agency located in Willow brook.

Eviction Services

Special Discounts available for bulk eviction services including Landlord’s Notices

Summons & Complaints

 Please contact our office for individual pricing schedule.

Credit Check

Please call for details.

Notary Public/ Mobile Notary Public

Each member of our office staff is a Notary Public and can perform notary services during office hours.

Criminal Background Checks

 Bulk pricing available, please call for information

Private Investigation

Investigation of person(s) or business.

best Service

Tri County
Investigations Group, Inc

Years
0

Highest

Standard

Supreme

Service

Est. 1976

Testimonials

Tri County Investigations is beyond compare. The team is professional, ethical, hard-working, thorough and fast. Your case is their case. It is personal.
Anne Z. Murphy
We have used Bia, Mariel and their staff at Tri-County for many years. Their percentage of successful service attempts is very high, and in the event of a non-service, they always provide enough information to allow us to refocus our attempts to be successful. When a defendant is particularly difficult to locate, they provide comprehensive skip tracing services. Their filing services are very helpful, and billing and references are easy to follow and to incorporate into our client billing. Finally, they are very responsive in communications, which can be critical when a court date is fast approaching. Highly recommended!
Michael Dimand
Our firm has engaged Tri County Investigations' services for over thirty (30) years, from skip tracing, process serving and asset searches. Their professionalism and commitment to their craft is exceptional and I would strongly recommend their services.
Gus P. Apostolopoulos
The Tri County Team is fantastic to work with. They are organized and diligent in serving documents for lawsuits. They are communicative throughout the process and timely in providing affidavits.
George Georgopoulos
My firm, Mayer and Marsh has been using Tri County Investigations for all our investigation needs for more than 20 years. You have always provided me with top notch process serving and skip trace service, both in terms of success, timeliness and cost. You have even been able to arrange service of process out of state for me when that has become necessary. Whenever I have been asked to recommend an investigation service or process server, I always recommend Tri County, as I refer to you as my Canadian Mounted Police Investigators because "They always get their man." You and your office are always pleasant to work with and easy to reach. During all the years we have worked together I have never even considered using a different investigation service. It has been a pleasure working with you all those years.
Mare S. Mayer
The Tri County Investigations team is a reliable, knowledgeable process server who are committed to excellent customer service. Bia and her entire team are always willing to assist with expedited requests and organized to handle large-serve assignments.
Kathryn LeFevour

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