What matters to me is why is it low, no criminal history and no past evictjons/judgements.

Next time, I would highly recommend doing a comprehensive screening (credit, criminal and eviction history) of anyone that you are potentially renting to.

this will depend on if he is a guest or if he has established residency. if he has furniture there and mail coming in he is usually considered to have established residency and would need to be evicted. if he just stopped by for a few days, he is a guest and should be considered a trespasser. however, in fuzzy situations police can sometimes refuse to help under fear that they are putting themselves into a civil matter (eviction) as opposed to a criminal matter (trespassing).

That is why when we sell properties we get professional pictures taken for the listing.We screen candidates initially on the phone to make sure they meet the general requirements (no felonies, no evictions, take home income 3x the monthly rent) and then we always perform a credit, criminal, eviction check. 

Finally, it may be strongly in the seller's interest to reach an amicable resolution with you least you pursue criminal charges against him. 

She is not responsible for the criminal acts of others.  

Meaning selling something you don't own for a price that it dosn't worth... kinda wholesaling ... no offence...

Your personal views toward "family" relationships have no place in renting, but if there is a valid reason, such as credit, poor rental history or criminal records you may have a basis for denial.

and pixy dust fantasy world numbers their criminal brokers use to get a listing from them.

And I learned the hard way, that a LREP doesn't imply they are not criminals and won't operate in their best interests, not yours.