Reference for Sukkah 6:12

דהני מילי בית דלמהוי קאי יהבינא ליה חצר האי דלמיסתר קאי לא יהבינן ליה חצר:

This applies only to a house which is intended to stand, [and therefore] we allow it a [share in the] courtyard; but as to this [a hovel] which is intended to be demolished, we do not allow it [a share in the] courtyard.

Jastrow