I understand I cannot legally require them to respond, unless the notice specifically requires it, like for instance, a notice of entry, but it's making it difficult to manage the property, and I'm not sure how to proceed.

As echoed by many, the Midwest, specifically Milwaukee continues to be a strong market for cash flow.  

For commercial buildings, be very specific - price range, $/door max, unit count, unit mix, part of town.

It's all about building trust and relationships, and in the long run, that will pay off way more than just trying to squezze a specific deal.

I’d recommend confirming the scope of work and checking with the Tennessee Board for Licensing Contractors to determine if a license is needed for your specific project.

The latter part of my post was referring to the protection of the account, not the assets through funding but the cash left on-hand.I think because banks are or were typically used for ck, savings, etc, I never looked to them as offering IRA/SDIRA.When I opened my account (2018) it was with specifics in mind and now I am reevaluating.

While the forums here may be helpful, those forums are private and specifically for LPs of any syndication deal, that niche group may have more expertise for you in this situation. 

Best regards, This approach is neutral and objective, focusing strictly on the criteria, and avoids discussing any specifics about the applicant’s personal situation.

In general, what sources and heuristics do you use to determine if an area can support new construction in general, and in specific in GNO?

I specifically want to call out one of their Senior Accounts Associate, Charlotte Cunningham, who helped me through the process on my first purchase as I needed to buy a sizable amount of furniture quickly and she was able to help me make moves quickly...and didn't make me feel bad whatsoever when I pulled back a few items at the last minute I was able to find them cheaper elsewhere.