I think as your rent starts to be below $700 you start to get into rougher more unstable areas which come with tougher and more unstable tenants!

You could collect an extra month's rent in installments over a year and then the tenant would effectively be paying 15 days early each month for the following month.That's probably what I'd do with a tenant that I felt was financially shakey or emotionally unstable. but if it was a good long term tenant that I felt was honest I'd probably be lazy and and just take the money on the 15th.

Caretaker advised existing garage doors likely won't even open and the structure is unstable. 

Don't forget that this is a scenario where he is certainly unstable and seconds will count when the police will be minutes away, I suggest having a way to protect yourself and your family if you don't already. 

We now realized the property is unstable due to the rain all these vacant years.

The indirect impact will take years (substantially increased inflation, unstable stock market, rising taxes to pay for all this).One thing is certain, housing will be in demand.  

My vacancy rate is 1/2 of 1% over the past 10 years but because of covid, it's a more unstable market so that's really just a guess in the very short run.  

I'm in a similar situation where I've managed to grow a pretty good savings and have good credit, but due to my carefree nature, employment history has been "unstable."

D class are older smaller buildings in bad neighborhoods that attract people with low credit and unstable or little income.

The market is unstable and there are too many unknowns.