If you imagine a green city, you might not first think of Houston, Texas, but according to a green building index, over half of the commercial square footage there has an EPA Energy Star or LEED rating. In fact, Houston has ranked as high as number 3 in the US for LEED-certified commercial space. “Since Houston is the energy capital of the world, sustainability is paramount to all aspects of our economy. This is evident in the way real estate has been consistently…