Abstract: A method and system for raising an existing structure without use of electrical power, such as a home, during a flood condition in which pilings are positioned adjacent to an existing foundation. Pile guides are attached to the structure and are used to receive and guide the pilings during raising of the structure. A buoyancy layer is formed below the floor of the structure. During a flood condition, the buoyancy layer raises the entire structure upwardly along the pilings to support the structure above the flood waters.