It's a good idea to keep an eye on any rule changes and check resources like the City of Chicago's website or talk to a local lawyer who knows about short-term rentals.

Account Closed  regular doorbell? 

These typically do not require any personal credit checks and are directly based off the property in question.On top of the $10-15k as a down payment, do you have any capital to invest into the property? 

Currently I’m using Zillow’s background check, and I’m screening all my  tenants  before they sign a lease.

Does anyone ever really check this?

Pull standard crisis and background report.2 Take care of maintenance on routine basis3 Check with prior landlordHave printed acceptance guidelines to avoid fair housing complaintsBob CollettRemax Trinity

Is this Tenant a Licensed barber (check the internet)?

Check the appraisal if they noted it as "Deferred Maintenance" - most DSCR Lenders will require the property to be fully turnkey and either $0 or up to a very small amount, like $2k deferred maintenance noted

Yes- I understand that as a wholesaler, occasionally you'll get massive checks, but as an agent, there is opportunity everywhere around you to rep people.

Checking out Furnished Finder, Aribnb/VRBO (30+ day stays) and looking at sites like AirDNA (only for STR data) can be great ways to do some easy market research on your own.