If you chose to keep the contracting “at arm’s length” and avoid any future liabilities, then verify/hire your contractors and don’t bring them in-house and be clear about their roles and responsibilities beyond the Scope of Work.I think it’s also important to know for all of us here at BP that the word “contractor” carries a lot of weight and means very different things to different people, none of them incorrect.

I'd like to make an offer, but want to verify my assumptions. 

I wanted to know what are some of the question you ask when you’re calling a previous landlord to verify the tenant.

You can independently verify the rents on Rentometer if you would like.

Regardless of your plans, get the tenants to sign estoppel letters verifying their security deposit, rent amount, etc.

Like anything, trust but verify when it comes to the numbers, but I can see myself working with them on future deals.

It's hard to be super helpful without spending an hour on reviewing/verifying your numbers, but if the summary at the top of the report is accurate, a 14% return makes sense to me.

@Russell Brazil Did you actually look up the specific property address to verify that you're over the income limit? 

'Buyer to verify' follows about every elementary fact in a listing.

If that is unsuccessful, you could try to dispute the late payment with the credit bureaus, but you'll likely be told that the creditor verified the information and no change will result if there are no errors in the reporting.