King Solomon, the wisest man of the ancient world said: “Divide your portion to seven, or even to eight, for you do not know what misfortune may occur on the earth.”Ecclesiastes 11:2Those words are just as accurate today as they were over the centuries.

This way after 9 months if they stop paying or cannot provide proof of income , you have 3 months deposit to pull from if eviction occurs. 

There is little in the way of direct action you can take.If this issue occurred between two neighbours living adjacent in your neighbourhood would you plan to intervene?  

Some lenders and by that I mean many... the pmi does NOT drop off on LTV but when the SCHEDULED LTV per amortization were to occur.

I explained that problems or differences of opinion will sometimes occur, so it's best to try to resolve issues before they grow into larger problems.I told both tenants that we can't always choose our neighbors and they may not become our good friends, but we can at least greet them with a smile when we see them and make an effort to get along.

Thanks folks, with some clarification the deal seems less complicated than I though. it did not occur to me at first that a large property such as this one would be split into parcels and that knowledge is definitely helping me focus on the numbers to make an offer.

The company did everything wrong when the incident occurred.

It's basically a tenant responsibility unless there is something unusual occurring, in which case I will hire pest control to resolve that one issue.

Realize the historical appreciation realizing it goes in waves (so short term depreciation has occurred but the long term appreciation has for over 50 years surpassed inflation and virtually every other market). 

Best to deal with problems up front, before they occur, when cooler heads prevail.Good Luck!