The first step before any plan is to evaluate with a professional the conditions of the land. In case we want to locate it in the subsoil. Often in very humid soils the construction must be done in a special way so in the future we do not suffer the consequences in the walls or the floor. Basement, mezzanine, mezzanine, anything goes for a one story house plans with walkout basements, a mezzanine or a room in a mezzanine.
Although one story house plans with walkout basements are different constructions. They have the same goal: to add a room that we can use in many ways. Surely at the moment of finishing it still not we have defined how we are going to use it. With what furniture we are going to fill it or who is going to inhabit it. But we are going to have well-known that we have already gained comfort, space and an infinity of options.
It is important, if we decide to have any of these spaces in our house. Evaluate the possibilities with our architect and builder. Often the floors and climates can play a trick if the construction is not done correctly. Thus giving rise to one story house plans with walkout basements full of humidity. Or attics that become uninhabitable ovens in summer.