During a period of three weeks that my property was on Zillow, I had so many people asking about the property including those with criminal history, good income but bad credit, and etc.

Once you have name and DOB confirmed, you should be able to look up court records for criminal background checks as well as eviction history.

There is a chance you do not possess paperwork from that long ago, in which case hopefully the former employer still exists and has records, you can also request tax returns transcripts from the IRS website or by filling out paperwork and mailing it in.Interestingly, banks don't do comprehensive criminal background checks (just for financial crimes specifically, though I've never personally worked on a loan where that came up, guess I'm not on the Wolf of Wall Street's speed dial).

The notice to the landlord shall be accompanied by either: (i) a copy of a valid order of protection issued by a court pursuant to Chapter 50B or 50C of the General Statutes, other than an ex parte order, (ii) a criminal order that restrains a person from contact with a protected tenant, or (iii) a valid Address Confidentiality Program card issued pursuant to G.S. 15C-4 to the victim or a minor member of the tenant's household.

It’s also mortgage fraud, which can be criminally prosecuted. the reason is that the lender inherently incurs more risk when it is deemed an investment property ,therefore they command a higher investment rate. 

The rehab and ARV "analysis" on the email daisy chains have gone from laughable to criminal.

I ran a check on one of my prospects for the office space and the service returned as 'Decline' because of a criminal record on file that happened 22 years ago for possession of a control substance.What would you do in this case, for a residential customer I would have simply declined , but for a office space , with small enough rent, should I take a risk of rent it to him?

Aside from providing the basics (ie. listing tool to get the property published to 10+ major sites, scheduling tool to schedule viewings, tenant screening with comprehensive applications -- pulled reports from TransUnion, which include nationwide criminal background checks + credit checks + eviction history, digital lease creation tool, rent collection tool, and maintenance tracking tool), some services also offer your tenants additional capabilities which makes it an easier sell on your end when getting them to transition over (ie. their ability to report on-time rent payments to the credit bureaus; this can create an added incentive for making sure they pay that rent on time).

Aside from providing the basics (ie. listing tool to get the property published to 10+ major sites, scheduling tool to schedule viewings, tenant screening with comprehensive applications -- pulled reports from TransUnion, which include nationwide criminal background checks + credit checks + eviction history, digital lease creation tool, rent collection tool, and maintenance tracking tool), some services also offer your tenants additional capabilities which makes it an easier sell on your end when getting them to transition over (ie. their ability to report on-time rent payments to the credit bureaus; this can create an added incentive for making sure they pay that rent on time).

@Federico Peralta correct me if I'm wrong but it was just criminal checks I believe.