It is just a warning because there is a whole thread on Bigger Pockets about excessive charge backs made by tenants when using no card present and no PCI compliance. 

(for eg: grading of the house outside, rot, exposure to moisture...)I am worried about the long term expenses that come along with it?

We know that rent control and excessive government control of housing actually harms low income people, but the politicians who promote it don't care; they want votes and their taxpayer funded jobs to be securedIn this case housing providers are being required to provide a service without compensation. 

L. 96-605, sec. 102(a), 94 Stat. 3522, was ambiguous and caused excessive litigation, in 1984 Congress amended the statute.

Conservative underwriting and excess capital reserves puts us in a comfortable position to execute the business plan despite the current situation. 

Spend some time looking for minimal risk investments in excess of 10% ROI to start.  

Most people think they're OK taking out the little roots and not messing with the big roots, but it's actually usually the opposite - large roots just stabilize the tree, while the small roots are the "feeders" that provide nutrients and moisture.

It appears that the amount would include sole proprietor income or independent contractor compensation not in excess of $100k.  

., business losses in excess of business income).

“Previously, if a married couple had depreciation deductions that exceeded their real estate business income, the couple could claim that "loss" to write off taxes on a maximum of $500,000 in income from other sources, like wages from a day job.Under the change, our rich taxpayer couple -- and this applies only for individuals, not corporations -- can now deduct an unlimited amount of "excess losses" in real estate against income from other sources.