How do you light when several families live in the same house?

Question: Two or three families live in the same house, but each one eats its meals separately. How do they fulfill the mitzvah of lighting?

Answer:

According to the Ben Ish Chai, they should share in the cost of the Hanukkah candles together, like the law of a guest who participates with a perutah.

He adds that the residents take turns lighting, so that each night one of them lights personally.

In this way all of them are partners in fulfilling the mitzvah.