I'm working on a project which is a renovation of an old power plant into a fitness center. The building had one existing floor, however, I am adding a second floor without changing the roof.

In regards to this credit (MRc1.1) I assume, the new floor addition square footage does not affect the building reuse calcs? Should I even mention that I am adding a new floor to the building?

I think this credit is tricky because Leed states "If the project includes an addition that is more than 6 times (for C+S) and 2 times (for NC and Schools) the square footage of the existing building, this credit is not applicable."

LEED does not define "an addition." It seems to me that an addition would apply to new construction OUTSIDE the building footprint. What about completely new spaces within the building footprint?

Thanks,
Nicole