Leviticus 14:43-45

And if the plague come again. — If after these alterations and precautions the symptoms reappear, the house must be pulled down, just as the garment was destroyed under similar circumstances (see Leviticus 13:51), and the materials deposited in the unclean receptacle outside the city, since its re-appearance shows that it is an incurable leprosy. From the fact that the materials of the house here spoken of are stones, earth, and wood, the ancient canons enacted that no dwelling is exposed to the laws of leprosy unless it has four walls, and is built of stone, earth, and wood. Houses of brick and marble, therefore, do not come within these laws.