I am working on a project that pursing LEED certification. It is a 2-story building with about 10% being occupied by an existing tenant. The building is currently just finished exterior walls and a bathroom. The owner is finishing out the rest of the building and as stated above wants to get LEED certified. Can I use the LEED Commercial Interiors rating system or do I need to use the LEED New Construction since the owner will be occupying more than 50% of the space.