Our client has a 100 year old building in the downtown area of a small town.This building will be a total interior demolition (exterior walls/ windows remain). With the percentage of interior demo, major structural work is needed. The client, who is also the owner, will be the sole occupant of the building as it will be the new corporate HQ. Must this be done under NC or can it be CI? Some of the information from the USGBC is contradictory, it seems, and NC SS prereq 1 would appear unachievable given the site constraints. Thanks for the advice,