Leviticus 14:45
And he shall break down the house, the stones of it, and the timber thereof, and all the morter of the house; and he shall carry them forth out of the city into an unclean place. And he shall break down the house, the stones of it, and the timber thereof, and all the morter of the house; and he shall carry them forth out of the city into an unclean place.
A house judged unclean because of its plague had to be completely broken down, with its stones and timber and all its mortar demolished and every part of the debris carried outside the city to an unclean place. The surrounding law made anyone who entered the shut-up house ceremonially unclean, and anyone who stayed in it had to wash his clothes. In this way the demand for cleanliness was extended from the camp itself to the homes of the people. The requirement shows that specific directions were given about the condition and handling of houses, as well as about cleanliness in divine service. It belongs to the laws by which Israel was taught to maintain cleanliness and to tolerate no impurity.