Parashas Metzora · Passuk 14:45
Chabad.org — English translation + Rashi
Torah Temima points to Toras Kohanim.
English: “Its stones …” — the stones of the house and not the stones of the upper story; the timber of the house and not the timber of the upper story; the plaster of the house and not the plaster of the upper story.
Limitation to the main house
Chazal limit the demolition to the materials of the primary house, excluding those of a separate upper story.