Here’s a professionally designed and built small home that runs about $125 a square foot.
“The first of their tiny homes is the ClearSpace Casita. This 432 square foot home includes a studio space that can accommodate a murphy bed/storage wall, work area, or built in display/book shelf. There is also space for a compact kitchen, a 3/4 bath and a generous sleeping/storage room.”
Read more about ClearSpace Modular Homes.