Beautiful Tiny House! You don’t build the Mobile home. You buy it, and it ships to your location, assembled and ready to use! The Mobile House is therefore a product, rather than a space, meaning it isn’t technically real estate.
Natural illumination. Of course, this all depends where you live and what your window orientation is. At my latitude, I don't have to worry about not getting enough solar penetration into a room because at mid-winter, the sunlight penetrates almost 5 metres.