"Mobile Agents... On The Move!"® Serving All Of Chicagoland RE/MAX Action is Chicagoland’s Technology Leader! Serving all of Chicagoland as RE/MAX Northern Illinois’ #1 Internet Marketing Company, RE/MAX Action registers more potential buyers for our Seller’s than any other RE/MAX Company or Office in Northern Illinois. RE/MAX Northern Illinois is one of the largest and most successful RE/MAX regions in the system. It continues to be the longstanding market leader in northern Illinois. Outstanding Agents. Outstanding Results. RE/MAX Northern Illinois agents lead the industry in professional designations, experience, education and personal production.