Can I (How do I) benchmark ...?

How do I enter a property that is under construction with a COMPLETE renovation?
How do I enter a property that is under construction with an ADDITION?
How do I enter a property that is under construction with a PARTIAL renovation?
Can I benchmark a partial building?
Can I mark a property as "Inactive"?
Can I merge 2 duplicate versions of the same property into one?
How do I benchmark a property that has two (or more) connected buildings?
I'm benchmarking two (or more) connected buildings as individual properties. How do I divide the connected parts?