Leviticus 14:43 "If the plague comes again, and breaks out in the house, after he has taken out the stones, and after he has scraped the house, and after it was plastered; (See NAS)
Leviticus 14:48 "If the priest shall come in, and examine it, and behold, the plague hasn't spread in the house, after the house was plastered, then the priest shall pronounce the house clean, because the plague is healed. (See NAS)