As a real estate agent here in Vancouver , Washington, I often get this question:
What is the difference between Green Building and Sustainable Building?
Here is the answer as defined by Earth Advantage in Portland, Oregon:
Green usually refers to a product or practice that requires less resources and has fewer negative impacts on the environment than its conventional counterpart. Sustainable in its strictest sense is a higher standard than green and refers to a product or practice that is forever renewable and has no harmful impacts on the environment or the people that provide or manufacture it.

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Mark Hall
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Hi Mark,
Can you have a building that is "forever renewable?"
OK, I have to admit I did not know that. I really should learn this stuff as more and more people are asking about houses that are green and better for the environment.
Don, Touche! Nothing can truly be "forever renewable" (other than an aluminum can) but it is a standard that can be strived for.
You know what they say, "once you achieve the impossible, it becomes part of your job descritpion!"
Todd, Give me a call. you mentored me on this whole blog thing. I can help you with green building!
STAY GREEN!