As sponsor you have a VERIFIABLE track record of success in same or at least similar investments 2.

You also have to verify whether you have access for delivery and most importantly whether you can finance the build.

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

DSCR lenders are going to want to verify you are not living in the property when you start the refinance.

You screen them the same way a hotel does: not at all.The only thing you need to verify is their credit card number.

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

Google sends a postcard out with a code on it to verify. 

The pay stubs can be hard copies or digital PDFs generated directly by your employer and sent via email; we cannot accept screen captures to verify income.Once your completed application materials have been received and it appears that you would meet our qualifying criteria, we would send you a link to perform a credit/criminal background check (this minor expense would be yours), and if those results come back acceptable, we would offer to proceed.

In the case of a multi-unit, the units you rent will be considered investment property *I am not a CPA, so trust but verify :)

I still have to verify with my HOA people.