You can close in an LLC and don't need to provide employment history, income or tax returns, and DTI isn't a factor.

.: Quote from @Jay Hinrichs: when I was buying notes I did not even run credit.. but I only paid 10 to 20 cents on the dollar.  

do not use a line of credit for a down payment. 

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

Verifying last 2 years of rental history very important!

.- Personal Articles: Coverage for belongings that have a special or collectors valuesuch as Jewelry, Furs, Fine Arts, Collectibles, etc...Your age should not be a factor on the pricing but, depending on the company these other factors may get you credits:- Insurance Score (company pulls certain info out of your credit report).

Just because you and they would have history together and on the same property. 

This is a good opportunity in a strong market, and with your excellent credit and HELOC funds, you’re in a great position to make this project happen.

I also can take out a home equity line of credit on my current home....but I need direction. 

The teacher was an actual financial educator but they repeated themselves a lot and were telling the students to go in and apply for credit cards DURING the course to purchase the next course for $15,000!