During the occasional tropical downpours that strike the area, the lot that this house sits on can flood in a major way. So the home was built raised above the ground, with rainwater collection tanks placed in the space underneath the house. These tanks supply the home with its water. This water can then be heated by solar power and, once it has been used, is treated by the home's on-site waste treatment system. Related: Australian beachfront Willow Home boasts solar panels and rainwater collection…