Published on:
9 May 2014
Feature image:
![](http://us.usgbc.org/sites/default/files/2009_to_v4-02.png?1399660339)
With the launch of LEED v4, you may have noticed that we changed how we talk about the rating systems. While it can seem a little confusing, we’re here to help. Let’s take a look at the 2009 rating systems on the left and then filter them through our special v4 lens. Here’s what we get:
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