This unique design includes an impressive 2-slant roof that also functions as wall. It has 3 levels, 2 of them for living and 1 for storage. Large windows bathe each environment in abundant natural light in addition to increasing the thermal comfort of residents. The system contemplates the use of natural building materials such as bamboo, wood and stone. Like every CASSA home, it integrates all elements of sustainability: rainwater capture, water cistern for storage, pump for redistribution inside the house, solar panels, LED lighting, efficient smokeless stove, gray water separation and reutilization in a family garden, and an underground black water treatment system.