Existing Building Renovation - What to include in energy model

Hello All,

I am working on an energy model for major renovation on a building which has labs and office spaces. We are doing the whole building energy model in an attempt to obtain credits for optimize energy performance. I have a few questions about what I need to include in the energy model.

1. Do I need to include existing parts of the building that are outside of the project scope? (These include labs/loading docks/electrical rooms)
2. Do I need to model process equipment such as air compressors or clean steam generators?
3. Does exterior lighting need to be included?

Thanks