A fire caused extensive damage Sunday to a two-story farmhouse at W849 Aebischer Road in Charlestown. Chilton Fire Chief Gary Halbach said part of the house was brought down with a backhoe. Another part was still standing but had a lot of smoke and water damage. "It's probably a total loss or a major loss," Halbach told USA Today Network-Wisconsin. "With an older farmhouse, it's always tough because once that fire gets into the balloon-construction walls, it chases right up to the attic and into the roof. That's what happened on this one." No one was home at the time. The cause of the fire was not immediately identified.