signs-of-mold-or-mildew-damage-At McMahon, we offer FREE black mold damage estimates to residential and commercial customers in our Chicago, Arlington Heights, Berwyn, Des Plaines, Evanston, Mount Prospect, Grayslake, Mundelein, Libertyville, Oak Park, Palatine, Wheaton, Naperville, Waukegan, Schaumburg, Skokie, and surrounding IL service areas.