What are 2 ways the tucks and fosters house are similar

Both of their houses are isolated from the rest of society, one being literally isolated and another being metaphorically isolated

is that both are isolated from the rest of society in one sense or another. The Tuck and Foster families are structured in much the same way. They each have four members: the Tucks consist of a mom, a dad, and two children, and the Fosters are made up of a grandmother, two parents, and a single child, Winnie.

Explanation:

heir as in "no one to pass it onto"  and chi as in energy or vibes