By now you’re probably familiar with the so-called “tiny house movement.” The basic idea is to drastically downsize your life so it fits into a small -- like 500 square feet or less -- home. Sometimes they’re on wheels and can be moved, sometimes they’re on foundations like a normal, larger house would be. Part of the movement is about simplifying one’s life and lifestyle, but affordability is also a driving factor. There is still no set definition as to what exactly constitutes a tiny house.