House in Wakayama is a minimalist residence located in Wakayama, Japan, designed by spray. The clients consist of four generations of eight people from a one year old baby to his great-grandmother. They run a company nearby and have lunch and dinner with everyone, everyday. A large gabled roof which is made of titanium-zinc alloy covers the house entirely, and part of it act as eaves of verandas. Each bedroom is positioned in a checkered three-dimensional pattern. The rest of the internal programs within the home is open space.