Having fallen into a state of disrepair or deterioration, especially through neglect
in deplorable condition; "a street of bedraggled tenements"; "a broken-down fence"; "a ramshackle old pier"; "a tumble-down shack"
A building that is dilapidated is old and in a generally bad condition. = run-down. a dilapidated building, vehicle etc is old and in very bad condition derelict (dilapidare , from lapidare )