Working house fire in Washinton Twp. E9-2 was first in with FF Wallace driving Captain Widmayer as officer(later assuming Charlie Division), Captain Knowlton as Fire Attack with FF Kohler on the knob and FF Harner backing him up and FF Canup hooking. E9-2 arrived with light smoke from the eaves of a single story home from the front 2 story from the rear with multiple additions. Captain Widmayer completed a walk around comfirming a working basement fire and checked that ultilities were secured and no kinks in the line. The crew forced the basement door and was immediately met with thick brown smoke. Crews went to work knocking the fire while other crews began to arrive. Fire attack got the knock while other crews completed the primary search on divsion 1. Checks were made for extension with nothing found. Fire was contained to basement area with substantial smoke damage to division 1. Fire marshal is on scene confirming cause at this time.