Go park and sit and watch.Call the local police and ask them about calls in the neighborhood.If you have children, check the sexual preditor's website to see if threats are in the neighborhood.

But at the same time I don't see much more risk in the drug dealer than the chronic DUI offender who commits manslaughter, or the sexual predator tenant who molests a neighbor, as aforementioned.

They may prevent discrimination based on sexual preference, or a number of other items at the local level.It makes me really nervous that you asked this on a public forum, then denied them anyway.

If something did happen for example, sexual assaulted a tenant, you as landlord can be sued.

Also get the crime reports, sexual offender map, and anything else you might need to help him think it's in his best interest to sell.Ofgift

It doesn't mention how long this law has been in effect, but the states and municipalities do have the authority to add protected classes to their equal housing laws (I remember one where sexual orientation was added), and this just serves to illustrate how important it is to know and abide by your state and local laws, and mind your P's and Q's when dealing with prospective tenants.

In a economy were unemployment is at its highest in years, monster companies going down like (insert sexual joke here), banks limiting their output of lending, the stock market, US economic woes, etc.

One stole a vehicle to go to court in another state, one was selling meth, and the last one sexually assaulted an old lady in an alzheimer's ward. 

I am mainly looking for a credit report, and a reliable, comprehensive background check (for felonies and/or sexual offenses). 

Just the fact that he brought your looks into it is sexual harassment.