Shortly before 1100 Orange 911 began receiving multiple calls for a house on fire on Whitetail Run in the Chester Fire District. Washingtonville R-581 was dispatched as the FAST on the 1st alarm. Car 2 (Hearn), Car 3 (Bates) and R-581 responded within 3 minutes. Washingtonville Car 3 arrived on scene first and found a large single family home with fire showing from the attic, a second alarm was sounded which also brought Washingtonville TA577. Units from South Blooming Grove, Chester and Washingtonville made entry and began to know down the fire, but were quickly evacuated from the residence due to part of the roof starting to collapse. A tower ladder was set up and knocked down the main body of fire. Once the main fire was knocked down units went interior once again, opening up and hitting hot spots. The units from Washingtonville remained on scene for over 2 hours.