S.I.R. Investigations, LLC

Security & Investigative Resources

"Providing security and investigative services throughout the state of Illinois."


Our dedicated team is highly trained and educated in a myriad of specialized fields. We are committed to providing you with the highest quality of security and investigative resources available.


At SIR Investigations the entire staff has joined together to ensure that all services provided will be conducted in the upmost professional manner, holding each team member to the highest degree of ethical and moral standards.

Illinois Private Detective License: 117.001667 and 115.002364
Illinois Private Security Contractor: 122.001284 and 119.001406