I've been working for the past year on a suite of 3 NC projects for a client, all to be registered with LEED 2009 in the next month or so, and I've just been asked if there will be a limit to the validity of the registration if any of the three projects is significantly delayed--the client is discussing an option to delay construction of the second phase to Q4 2014 and third phase to Q4 2015. I can't find any mention in the NC documents or anywhere else that gives a sunset date but I was alarmed to note that the v 2.1 projects have a sunset date of December 2011, which indicates that registration didn't secure their continuing on the v.2.1 system until completion. However Item 4.7 in the June 2011 Certification Policy Manual clearly says that "closure of registration shall not immediately impact the status of registered projects....Projects that are registered under a rating system that is subject to closure will be allowed to proceed through the LEED Certification process in accordance with the requirements of such rating system; provided that they adhere to the policies....etc". So perhaps I'm simply ignorant about a special case regarding v.2.1 projects? A switch to LEED 2012 as written wouldn't be possible for these non-US projects. Thanks for any comments.