Buy it personally, and rent it full time to my C-corp?

Like @Vince Scipione said, good for you for being a decent person!

I called that person two more times just flabber ghasted that I actually got a banker to admit this info is legitimate with many more questions.

The title company will handle clearing the title but won’t manage personal agreements.

By year 5 we had around 55 people.We did hire a marketing person but frankly marketing wasn't our strong suit. 

It has worked out for me, but I'm wondering if anyone else has another person they trust that I can float other, similar tasks to?  

Since your an estimator are the materials and labor based on facts (i.e. hard costs a labor units) or a guess.Nothing personal but I wouldn't consider anything you wrote there, if I was buying I'd do my own estimate/SOW. 

I'd say the logical paradigm in the question is a bit off.CRE includes everything from airports to golf courses to hospitals to campgrounds.So saying "residential versus commercial" is like saying "bacon versus plant life."

I have two other properties with that bank so if they make my life difficult ever I have a lot loans I can pull from them and move to other banks.

They are the best thing to add to your own personal knowledge, books, and podcasts out there.