Police said this week that a camp fire near Big Run is a case of arson.
It happened around midnight Saturday on Winslow Road.
Punxsutawney borough councilwoman Jaime Sherry says she and her husband, David, bought the property that included the dilapidated building a few years ago.
She thanked the firefighters who responded to the blaze.
Anyone with information on who set the fire is asked to call state police in Punxsutawney.