At approximately 15:45 hours crews were dispatched to a possible structure fire at 126 E Division Ave. East Spencer. Caller advised it was a grass fire approaching the structure. East Spencer Engine 471 arrived on the scene with heavy smoke showing from the "C" side of the structure. It was confirmed that they had a working fire from a single story structure. Engine 471 pulled a attack line to the rear of the structure. Salisbury Ladder 1 arrived and pulled an additional line to assist with fire attack. Spencer Engine 751 took Back up line for crews working interior. Engine 643 arrived on the scene and secured utilities and begin setting up for ventilation. Union Engine 761 and Ellis Engine 481 assisted with manpower. A quick knock down was made and we begin to overhaul. Once overhaul was completed the scene begin to deescalate and companies begin to be released.