Help a family building a house

Help!!
My husband and I continue to make relief projects in Brazil.
We know a family that lives in the Favela (Slums) in Brazil. They have a very small house. The house consists of one room. In this room is the kitchen, the room and the bedroom. It sounds very comfortable, but it is in truth an absolute sad situation. The family has no money to enlarge the house. The kitchen has a small old gas stove. The bed is an old mattress. The fridge is very old and rusted. Pans and other cooking utensils are made from recycled plastic. The bathroom is so ugly, the walls are brown and the toilet is also very old and dingy.
My husband and I go back this month to Brazil and decided to help this family. We will enlarge the house, and make up a bedroom for the kids. We will renovate the bathroom and the kitchen.
This allows us to implement this project, we depend on your help. A toilet ring costs about USD 20.- and a pot color about USD 10.-. So you see, even small amounts can cause Big! The more money comes along, the more we can do.

About donations we would and totally happy!
Many many thanks in advance!