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About Us


S.D. & Associates, Inc. is a Chicago based Private Detective and Securiity  Agency, License 117-001472/122.001223 . We provide investigative research, executive protection and security training services. Our services are directed toward corporate, private, public and government markets of metropolitan Chicago and the State of Illinois.

SDA delivers strong reliable service built on trust, confidentiality and proven success. Our staff has over 40 years of experience in the field of law enforcement, corporate investigation, federal defense contract security and military service. We deliver where no other agency can. Our goal is to provide positive results and exceed our customer’s expectation.

As interest grows for an increase in homeland security, the demand for highly skilled risk mitigation specialists that can address current domestic and international threats will also increase. We are positioned to resolve issues that negatively impact your business as a result of internal theft, personnel or information security and other potential risk loss events. SDA can effectively assist your business and community with physical security, business continuity, increased awareness and preparedness.

Our corporate office is centrally located in the Hyde Park/Kenwood near the University of Chicago Campus with additional satellite training sites throughout Chicago. We are uniquely qualified, licensed and registered with the Illinois Department of Financial and Professional Regulation. SDA is a member of the American Society for Industrial Security International, Illinois Association of Security Chiefs, World Association of Detectives and the International Foundation for Protection Officers.