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Welcome to Green Credential!

Welcome to Green Credential  your FREE online Green Building and Clean Tech Resource!  Here, you can find everything you need to help you earn your NABCEP or LEED credential. You can check out our study guides and practice exams, to help you succeed. We are dedicated to helping you direct you to maximize your exam preparation time. If you don’t know what to do, or you feel kind of lost, please click a link below so I can figure out the best way to help you.

Green Credential is proud to present professional study guides for LEED and NABCEP exams.


Parker Williams, LEED AP BD + C,  and the Green Credential Team