I've looked at tenant screening, mysmartmove, turbotenant, rentprep.It's all a bit overwhelming - I think I want it all - credit, background, eviction, and criminal.  

It could possibly be criminal. 

I would immediately talk to a very good criminal defense attorney and get some advice. 

No offense, but not all GC's and handymen are created equal.

You can also go to public state records available free online and search their criminal history.  

While a violation by them would result in a possible civil penalty, you are acting as an agent without a license which could result in a criminal action

yes. i thought NJ and NY markets are the same. it was the news all over in the world that attracts homeless to NY that the city using taxpayer money to house them. it's $2000 per person a month. google any NYC pay homeless, tons of news. non paying tenants, paying homeless....http://www.dailymail.co.uk/news/article-3995098/Ne...There was a news few years back that NYC panhandlers who own a few condo apartments by putting dirty make up on without getting haircut or some with a dog. this is one of the news even on International Business news.http://www.ibtimes.com/how-much-do-panhandlers-mak...no offense, why we want to invest real estate?

Any person who engages in the business of a real estate broker or real estate salesperson without obtaining a license as provided in this chapter shall be fined not more than one thousand dollars or imprisoned not more than six months or both, and shall be ineligible to obtain a license for one year from the date of conviction of such offense, except that the commission, in its discretion, may grant a license to such person within such one-year period upon application and after a hearing on such application.If you get a license or if you have a licensed agent or broker in your company, I think that is the way to go. 

—In all criminal cases, contempt cases, and other cases filed pursuant to this chapter, if a party has sold, leased, or let real estate, the title to which was not in the party when it was offered for sale, lease, or letting, or such party has maintained an office bearing signs that real estate is for sale, lease, or rental thereat, or has advertised real estate for sale, lease, or rental, generally, or describing property, the title to which was not in such party at the time, it shall be a presumption that such party was acting or attempting to act as a real estate broker, and the burden of proof shall be upon him or her to show that he or she was not acting or attempting to act as a broker or sales associate.

One of my properties has a common law couple with a recent domestic violence incident and criminal charges including Domestic Violence Protection Order (DVPO).