There is no need for you to bury a statue of St. Joseph to sell your house. Burying a statue of St. Joseph in an effort to sell a home is a modern phenomenon. Saint Teresa of Avila and St. André Bessette never buried statues of St. Joseph. Statues, unlike medals, are not made to be buried. Statues represent a person, and are meant to be venerated above ground, not buried in the ground.