Performance Period

Rey, I've checked around and there is simply no reliable answer to this question right now from USGBC.In the absence of guidance I would suggest a) ask GBCI about it, and/or b) choose a common-sense approach that you can justify.

Tristan's right - there is not an established process for setting up recertification performance periods right now. However, I'd recommend that, in the absence of a clear answer, you defer to the most recent published instructions from the LEED EB v2.0 Reference Guide. This would mean that your performance period essentially begins the day after you receive your initial LEED certification. In order to recertify, your performance period must then end within 5 years of that date. If your performance period ends later than 5 years from the initial date of certification, your current project would actually be considered a new project and you'd be required to provide full documentation for all credits.