Firefighters responded to Kaysinger Rd for a report of a fire in a house.  Rescue-Engine 61 had heavy smoke visible from the station.  Upon arrival they found 40x40 building with heavy fire and exposure involved, both noted to be vacant by the owner.  Firefighters deployed a 2 1/2" line, extinguished the vacant home and knocked down the flames of the original fire building.  Extensive overhaul was performed by firefighters.  On the assist was Sullivan, St Clair, Cuba and Leasburg Fire.