There are over two and a half million real estate professionals in the US, so how do you choose when you’re ready to sell, or buy, a tricked out super solar LEED-certified home?

One option is a growing number of sustainably-minded realtors trying to set themselves apart with a relatively new certification (2003) called eco-broker. We stopped in at the home-office of San Francisco’s first green realtor Chris Bartle of Green Key Real Estate.