Get a lawyer.If you are correct about the facts, I would suggest filing suit against the bank.That will almost certainly make them file criminal charges against the person that used the property as collateral if he cannot pay off the lien.

If the contractor steals the materials that I paid for from my jobsite, they can be charged criminally so the chances of them doing that are much less likely.

Turns out he has a bunch of criminal charges, a bunch of them are for theft and other various dishonest types of things.

They check credit, criminal, eviction, employment, and residential history.

Also, crime websites show hardly any criminal activity there, so seems pretty safe.

Criminal penalties are not outside the realm of possibility depending on how egregious the conduct was. 

And get the criminal & eviction report as well. 

The tenants are more concerned with the criminal activity in the area than the schools.

Are the tenants that are there criminals that scare away any new applicants?

Tell them this as well.The last time I heard something like this, the house was being used for criminal activity.