Or a person that can possibly approve me for an unsecured line of credit.

You can just write a check from your secured business line.The goal here is to build your LLC's business credit so that eventually, you can open an unsecured business line for $40K or more.Your $15K will not really earn money doing it this way.

The main difference being that one is leveraged and one is unleveraged.

We can help source hard money loans, construction loans, secured and unsecured loans, portfolio margin loans, small business loans, etc to help you get the capital for this deal.3.

Banks do make unsecured loans BTW.

In the past, I've also had good success with SunTrust for very low cost unsecured lines of credit.  

Also here are a few "never do's" to help you understand the risk: Never do deal if the property can’t be valued properly (no comps no deal)Never do a deal without a third-party escrow Never assume the third-party vendors will not make a mistake (deals take longer then planned, watch out for scope creep)Never do a deal without property insurance Never do a deal on owner-occupied (there are laws that can get you in trouble here)Never do an unsecured loan

I'm thinking we'd have two options - one secured, and one unsecured.

Unless you are just using the term mortgage colloquially and you really mean just an unsecured loan.

He talks all about the unsecured debt.