My biggest two things were getting "lean" in our household, i.e,. no debt other than our mortgage, vehicles paid off, cutting expenses where we could and just saving and saving. 

Use the household income.

@Ravi SinghHere are a few graphics that may help in your search.The first one shows the change in population since 2010, aggregated by each neighborhood in ClevelandThe next once shows the change in rents since 2010This last one is the change in household incomes since 2010Each one of these metrics is important for buy and hold investors to understand.

Up until a couple of years ago at my previous city of employment, the answer for eviction there was "if they pay rent, have a verbal agreement to pay-even if they haven't paid yet, or contribute to the household financially" (think roommates, subleasing, renting rooms in your house, and the friend "can I stay on your couch for a week for $20") that was all said to fall under a landlord/tenant rule and so we always told people they needed to file an eviction if they wouldn't leave.

So I just received word that San Bernardino County is opening STR for immediate household only as of today.

Compare household income or net worth in Massachusetts or New Hampshire to North or South Carolina.  

Our household has more the twice the average household income of the area according to the US Census, we have no debt, and credit scores above 760. 

I have never had it come up in court, but my argument will be that I need to charge for my time as my business is how I financially maintain my household. 

I calculate a good positive cash flow and figure the income coming into the household through my parents could save thousands in taxes while buoying my parents future financial success, especially if we sell our primary home at retirement and they live on their own again.

You can find Cost of Living info, school info, community overview, median household size/age/income, climate info, crime info, population growth by percentage, school test results, fair market rents..Massive amounts of School Specific Info can be found HEREAlso be sure to check the "County Details Links" to check out more stuff about the properties/areas..Good Luck!!