Although I can only imagine the effects on your health that getting next to no sleep at all that you received.

It poured over to the ground and started leaking into the basement.

I do plan to pour money into the stock market over time.  

The current layout is  very awkward and is a poor use of space, but could be tremendously improved by just swapping the tub and shower locations/orientations, which I imagine would drive potential costs up a lot.

I'm not familiar with Buildum but I would imagine any credit card payment could be subject to the card company withdrawing the payment if the tenant disputes the charge but that's a whole different topic.

I imagine they don't do as well once you factor in capex, vacancies, and repairs, but they were plentiful back in the day and still fairly common today. 

I would imagine that the changes have been dramatic.  

I cannot even imagine the idiots that would try to break in a marijuana dispensary. 

I imagine that's where your landlord stands on it.That said, I feel for you as a tenant.

I imagine it's feasible that he could then find a portfolio lender that would allow him to refi all these properties into a commercial loan so he could get his cash back and repeat the process (assuming at least a few months seasoning).