It's peculiar that it's God who puts leprosy in a house to begin with.
33 And the LORD spake unto Moses and unto Aaron, saying,
34 When ye be come into the land of Canaan, which I give to you for a possession, and I put the plague of leprosy in a house of the land of your possession;
In the extreme case of an attack of that leprosy on a house, the cost of cleansing, or of any associated measure, is entirely upon the affected party, which case would pose enormous disposal issues, as well as contagion.
Is Leviticus 14:46 practical in any case, let alone when it's a poor man's only home now gone leprous? Because its written God's laws weren't burdensome, and all were to be observed to the very least of them. This however seems be no where near being practical.
Leviticus 14:45 “He shall therefore tear down the house, its stones, and its timbers, and all the plaster of the house, and he shall take them outside the city to an unclean place
Or this section on the disposal of the leprous debris an allegory afterall?