Trotter and Associates, Inc.’s corporate office is located in St. Charles at the intersection of Illinois Route 64 and Burlington Road. This key location was selected based on its easy access to several major routes, which enables our staff to provide clients with outstanding service, readily available with minimal travel time. The firm’s client base has continually grown over the past twenty-six years, with additional offices in Oak Brook, Illinois, Fox Lake, Illinois, and Lake Geneva, Wisconsin.