I want to show a history of revenue, so I can purchase another property using the LLC. 

However, if they are a feckless and non caring operator with a history of one thing after another, they deserve it.

Property owners should take the time to get to know the potential tenant and learn about their rental history and any other relevant information, and if you know your clients; you will not only be an advocate for them, but in some way be also an advocate for the property owners - by bringing the two parties together successfully, which not only benefit them both financially, but also serve housing needs of those in that need them the most.Build trust and understanding.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

as the previous post said n ga has had good history on short term although i have no experience up there on that.   

I am the author and would be happy to answer any questions or jump on a phone call if you'd like.I'm always happy to talk to young aspiring investors.

I am the author and would be happy to answer any questions or jump on a phone call if you'd like.I'm always happy to talk to young aspiring investors.

Purchased previously from local housing authority and this was their last property they were selling.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

In many cases you would need the owner/borrower authorization to obtain payoffs, so for the most part you have to estimate based upon worst case scenario.