Large space is an important things to build comfort home. First step is consider how wide your land and how far your house with your neighbor. Enough space also support health house. The necessity of large space for building grows are important to consider of our building grow. Someday, we will build another room for another functions, such as if we need to build another room for our children, of guest room.
In another case, the lost of building space function will make another impact and problems in the future. Based on this case, so we need to optimize our design to avoid that problems. Followed picture is a design for enough building space. The green color is the minimum proportional for the space. We can add more large space if we have planned to build another room such as garage or garden.