A Clarkstown family and their two dogs escaped a house fire unharmed Saturday, but the house was destroyed and they’re living now with nearby relatives. Clarkstown police say the fire started just before 2am on Christmas Eve at a home on Barry Lane in Bardonia. Police say the fire spread quickly throughout the attic and roof but there’s been no official determination as to what caused the blaze. It is under investigation by the Clarkstown Fire Inspector.