Here is a website for a company that specializes in small home plans with a fascinating forum filled with many people and pictures that have built their own small homes including an 18 Year old girl. Whether off the electrical grid, for vacation or retirement or just to bootstrap yourself into a better place in life, a good idea. Imagine a life without a mortgage payment or, build your first home, sell it and and create instant profit. I plan on building a cabin at a lake using some of these ideas. Not every home has to be professionally built and in a subdivision. Nearly everyone built their own home 200 years ago! Good Luck.