@Laura RechesYou may not actually need their SSN on an application - there are ways that you can still get credit and criminal reports without you needing to have that on the rental application.  

@Kyle J.Please don't take an offense, but they are so standard and non revisable and offer a very limited contract.  

@Patrick Desjardins  No offense but don't you focus just on 2nd's?

It is usually very easy as the vast majority have terrible credit, criminal records etc. 

That is silly, you could be losing a great tenant.What you really need is to not only check out the property, but you need to check out the tenants too. 1. get the info proof of their past payments, 2. verify their ability to pay just like an new tenant by usual stuff like job, income. eviction, criminal record, and social media. 3.

Criminal penalties of up to $1,000 per misclassified worker and 1 year in prison can be imposed as well.

Does your background check system include a credit, criminal and eviction check? 

I hope you don't take offense to this, but you've put the cart well before the horse.

Its goona be a Bonanza for the criminal  leaning Contractor element.    

I think this has been a contentious building in the past because of how long it served as low-cost housing for those who couldn't get housing elsewhere due to criminal records.