You have to upgrade the listing to premium (pay the $29.99) and then it gives you the option to hide your phone number/not let tenants reach you by phone.

What @Jay Hinrichs is saying is that if you go before a judge, and you show that these leases were signed for significantly under market value and signed just a few days before closing, there is a good chance the judge will side with you because it is an obvious attempt to pay less rent and take advantage of the new owner.I think your next move should be to contact an attorney in your area who specializes in landlord tenant laws in NJ, and see what they recommend. 

It makes it much easier to get tenants to pay for their utilities (they can put the utilities in their name).  

I could buy a house for $450,000 with a mortgage of $3,000 plus taxes, insurance, and maintenance.

This is because the Schedule E is obtained independently, and few people would inflate their rental income in that form (and pay more taxes than they should).  

Know what is market rate for rents as well as what section 8 pays.

Pay attention to the number of times that people have sold the house.

@Michael EdwardsI would ask them for a contract but if this is one of those deals where they pay off the mortgage for equity in the property understand your portion of the equity will be very minor.

@Keena Clark try that link thats CA CAD.https://publicrecords.onlinesearches.com/California-Assessor-and-Property-Tax-Records.htm

The property taxes are current and insurance is current.