@Jeff G. not aware of that, but sure it's available for a price from Fair Isaac Co or one of the credit repositories.

I don't have the capital to replace the HVAC at this time or the credit to finance it.

Small, local banks and credit unions always have connection issues no matter the software.

Tell the lender you want a construction loan online of credit.  

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

You may need some help with capital, or credit, or both.

I also have a $50k line of credit I can tap into when needed that will grow as I keep growing the business.Right now my rent is about $1700 where I've been staying for over a year, but really wanting to trade that for a mortgage and start building that equity.

To address this, the lease will clearly state that any credit will be returned at the end of the lease term.

Purchasing a STR in a somewhat sketch area is a terrible idea and as others have mentioned, is going to open you up to potential issues. 

Get knowledge, follow experienced people, and leverage wisely.My Take:If you have two houses, excellent credit, and motivation to build wealth, you can learn to manage your money responsibly.Use HELOC, credit cards, and business credit funding to leverage your cash and buy properties faster.