Pay attention to conversations where you uncover someone is a contractor or works in a specialized trade.

Add to that they are normally more well versed in the trade and can answer questions better. 

Lots of things can happen that we all have no control over.How does the trade war with China turn out?

They learned how to weld or do pipe fitting in high school or trade school. 

The processing fee is only an additional $3, however as these tenants have been a royal PITA thus far, and it’s increasingly apparent they will need to be continuously trained, I’d like to charge a fee for them breaking this rule in the lease; however the lease doesn’t state a consequence or fee for paying in multiple payments.

If you aren't willing to accept the consequences of both, you probably aren't ready to make the deal.

saw that in Vegas as well.this was mainly in areas were new construction was HOT and when it stopped it came to a screeching halt and all those sub trades found themselves without a job.. and simply left. my clients bought multiple MF from me in the Portland Vancouver market.. they lost some value but did not go vacant. these were lawyers and very professional types from SF bay area.. it was a disaster for them multiple foreclosures on their fico's.. it stung bad.Not saying that will happen in the future as I am gung ho new construction personally.. but it did happen.

I would trade them in and get two reliable, fuel-efficient cars like a Honda Civic.2.

.- You are clearly putting your own interest in making money over your grandmother's interest in getting the most money for her home.You're free to ignore the law if you like, but expect to pay the consequences if you get hauled in front of a judge.

It's a trade-off: You're getting zero vacancy in exchange for taking on some additional risk with regards to/out move-in inspections and damages.