Once upon a time an American family’s home was their castle and the bigger the better, but growing concerns about meeting mortgage payments and the environmental impact of large houses has helped fuel a new movement of people who are happy to live small. The Tiny House Movement is a growing group of people who are happy to downsize the space that they live in and enjoy simplified lives as a result. While the average American home is around 2600 square feet, the typical small or tiny house is around 100-400 square feet.