That they empty the house, i.e. the possessors of the house. It is observable here, that neither the people nor the household stuff were polluted till the leprosy was discovered and declared by the priest, to show what great difference God makes between sins of ignorance, and sins against knowledge and conscience.
Related Commentaries of Leviticus 14:36
Leviticus 14:36
36 Then the priest shall command that they emptyb the house, before the priest go into it to see the plague, that all that is in the house be not made unclean: and afterward the priest shall go in to see the house: