What does your dream house look like? Is it covered in solar panels? Surrounded by plants? Maybe it's tucked into the forest or perched on the coastline. We've rounded up six people who refused to accept the fact that eco-friendly home has to cost hundreds of thousands of dollars. Rather than wait the years it would take to afford a traditionally-built home, these folks build for $20,000 or less! Read on to find out how they did it.