What LEED rating system to use?
I am preparing to assist clients with existing buildings and we are trying to determine which LEED rating system to select.
CASE 1 This is an existing 20,000 sf building that will be significantly rehabed. Mechanical systems and windows will be replaced. new finishes will be installed though a wholesale gut and reconstruction of the interior is not happening. Is this sufficient to qualify as a LEED NC project?
CASE 2 This is an existing building of 25,000 sf that will be totally gutted. It will be owner occupied. A totally new floor plan will be designed and systems installed. New windows including some new openings. The project is to be constructed in phases, however so that the design and construction submittal will only include 30% of the building area as finished and occupyable. No additions will be constructed. Can I document this as LEED NC? How would I account for the unfinished space? Would LEED C&S be better? How would I account for the finished space in that case?