(I'm fine with it, but just wanted to check). 

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?

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

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

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.

You have to check the laws on this in California. 

Talk with local investors about who they use and maybe check with your local chamber of commerce.

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.