Sugar Daddy gets tired of her cheating and drugs.

A failing system typically cannot be simply handed off to a buyer without remediation and replacing an aging septic system with a modern alternative treatment system (ATS) can be a significant financial undertaking.

Are there any drug dealers near the property?

Tax treatment of LLCs is very controversial in this case.

My understanding is that the $480K qualifies for 1031 treatment and tax deferral.

That in and of itself gives you some indication but, if you ask these people if they feel safe living in Mexico, their typical answer will be something like this:"In Mexico, we don't get involved with drugs and I don't go to areas I shouldn't be going to, rules that would apply to the US/Canada as well if you want to stay safe.

Gang activity, drugs, homeless etc.

While not a big deal in the grand scheme of things, it does create delays and more items that I have to keep track of, that aren't actually productive.I understand a repeat customer may get priority treatment, it's when a desire to keep that customer happy by overlooking existing problems that come up later, occur.

if I did a drug, criminal, credit check on you, is there anything I should know?

Well, the best tool in my toolkit is Form 8082  Notice of Inconsistent Treatment.