But the dividing line between C and D for me is ALWAYS public criminal activity.

I don’t think they have a major criminal issue, but they show up dark red

If what you do falls within one of those definitions then the WI Real Estate Examining Board has authority and may try to sue you, or the district attorney may sue you both civilly and criminally.

In Jerome they got so upset with one local resident that they tried to bring criminal charges against him for doing STR and "ruining" their community. 

Don, I am having second thoughts on this because you and/or your family do not appear to have any type of criminal history or are in prison.

Texas Real Estate Commission, Fair Housing and HUD are no joke.Practicing real estate without a license is a criminal offense in TX - Class A Misdemeandor (see Chapters 1101.756, 1101.757 and 1101.758, TX Occupations Code).According to the TX Occupations Code, they may also be sued civilly:§ 1101.754.

Criminals are always the ones responsible for crimes, not their victims - I realize in this case the word 'crime' might be debatable, since a lot of skeezy business practices are actually perfectly legal, but the point remains.

Additionally, consider checking their previous rental references to assess their reliability and adherence to lease agreements.Background Check: Conduct a background check to screen for any criminal history or eviction records.

No offense, but this post makes no sense to me and seems a bit fishy.

Here are some tips for vetting potential tenants:Require a rental application: Have all potential tenants fill out a rental application that includes personal and employment information, references, and a consent to run a background check and credit report.Check their credit report: A credit report can give you insight into a tenant's financial history, including their payment history, outstanding debts, and credit score.Run a background check: A background check can reveal any criminal history or past evictions, which may be red flags.Verify income: Make sure to ask for proof of income to ensure the tenant has the financial means to pay rent.Contact references: Reach out to previous landlords, employers, and personal references to get a sense of the tenant's reliability and character.Conduct an in-person interview: Meeting the tenant in person can give you a sense of their personality and demeanor, which can be important factors in being a good tenant.Trust your instincts: If something seems off or you have a bad feeling about a potential tenant, it may be best to pass and keep looking.By taking these steps and thoroughly vetting potential tenants, you can increase the chances of finding a quality tenant who will be a good fit for your rental property.Good luck and keep us posted on what you decided to do!