The Kent family farm has remained in the Kent family for several generations. Currently, its sole occupant is Martha Kent, though her son Clark often visits and occasionally spends the night.
Several years ago, the super-villain known as Conduit learned of Clark's dual identity as Superman and attacked the Kents in order to get to him. He destroyed the farm forcing Jonathan and Martha Kent to live on the road for several months in a recreational vehicle. 
The Kents eventually returned to Smallville and rebuilt their home.