I seem to be posting on this thread constantly! I wish I had a straight-forward LEED project. My current concern is a single university building. They will renovate about 90% of the interior in 2 contiguous phases over 1-2 years, carrying out no exterior or envelope work except for a new canopy over a walkway (minor work). They will do some work to HVAC but are currently not planning a new system, only substantial revisions, and they will provide new w.c.s. During phase 1, about 60% of the building will be operational/ occupied, and during phase 2, about 45-50% of the building will be operational. I think this is an EBOM that would start the Performance Period 1 year prior to handover, whilst ensuring that any Phase 1 work is done to LEED specification. However, recent rulings on CI projects indicate that though only 10% of the space is commercially-let, this could be a CI project. Or it could be NC due to the total area of the project that is being renovated. I will call GBCI later tonight but would appreciate LEEDUser comment since I have had some very unclear phone advice in past on this type of issue.