How did Jurgis' purchase of a home put his family in a desperate situation?

After Jurgis and his family moved into their new home, they bought furniture on credit. They felt satisfied with their purchase until they learned about the hidden costs associated with home ownership. They didn't know that they would have to pay interest each month, nor that they would have to pay annual taxes, an annual water fee, and for the cost of putting in a sidewalk and sewer system.