There is a difference between a blessing for a new home and an exorcism. A blessing of a home is a celebration. The homeowner is thanking God, from whom a blessings flow, for the gift of a new dwelling. It is not meant to drive out evil spirits or any of the crap that Begley was talking about. It can be done by a priest or a deacon or by the homeowner them self.
Actually, indeed, ethnic Catholics who bought older homes, often had the priests in to bless it and pray that any evil lingering there would be driven out. But it was not an exorcism which is a different rite. A lot of theses beautiful and mysterious customs, unfortunately, have disappeared.