How To Become a Licensed Private Investigator in Illinois

Apply for a license

Illinois Licensing Requirements

Licensing Authority

Private investigator licensing in the state of Illinois is handled by the Illinois Department of Financial and Professional Regulation, Division of Professional Regulation. The department issues licenses for private detective professions:

  • Licensed Private Detective
  • Licensed Private Detective Agency
  • Licensed Private Detective Agency Branch Office
  • Approved Training Course School
  • Firearm Control Card (FCC)
  • Permanent Employee Registration Card (PERC)
  • Firearm Instructor
  • Approved 20-Hour Basic Training Program
  • Approved Basic 40-Hour Firearm Training Course

Contact Information

100 West Randolph, 9th Floor | Chicago, IL 60601
320 West Washington, 3rd Floor | Springfield, IL 62786
Phone: 1 (888) 473-4858


General Requirements

The following is general licensing information. Please visit the website listed above for specific licensing information, application forms, insurance requirements, fees and any special licensing requirements.

You must also be able to meet the following minimum requirements to be eligible for private investigator jobs in Illinois:

  • Be at least 21 years old
  • Either no felony convictions or 10 years have passed since your sentence was completed
  • May not be a registered sex offender
  • Must be of good moral character
  • Be psychologically and physically fit for the duties of a private detective
  • Have no narcotic or alcohol addictions

Please visit the website listed above for a complete list of requirements and to learn the steps involved in the application process. Via the website, you can find out how to get licensed, lookup an existing licensee, and learn about the laws and rules that govern private eyes in the state of Illinois.

Other special licensing requirements such as education requirements, experience requirements, examinations, and insurance may be required.  Check the state licensing website for more information.

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Private Investigator Associations

Hire a Private Detective

  • Hire a Private Investigator Agency in Illinois – To hire a private eye, please visit our worldwide directory of investigation agencies. Our directory may also help you find an agency to sponsor your training and certification efforts, and help you comply with state licensing requirements.

Additional Information

  • Training Resources – Improve your chances of getting licensed by completing a professional degree program, training course, or home study course. Learn what options are available to get the investigative knowledge necessary to get licensed and begin your career.


  1. Like to know what I need to do to get a P/I licenses in State of Illinois. I’m a retired Army Veteran looking to do some free lance work.


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