Currently using as a STR.

My current CPA is not well versed in the realm of short term rentals, finding one that is has been on my pipeline but with all the work involved with the property setup I haven’t gotten around to it.

The way we look at it however is this sort of situation would be OK - but its a one time referral fee - any sort of arrangement with a long-term referral fee / borrower protection is reserved for true professional mortgage brokers - who like @Chris Seveney mentioned, would be doing more legwork on the deal vs. a simple and clean referral handoffvia CFPB on referral fees for business-purpose hard money loans:§ 1024.5 Coverage of RESPA.THIS VERSION IS THE CURRENT REGULATIONView all versions of this regulationSearch this regulationRegulation X(a) Applicability.

Failed listings could mean canceled listings, expired listings, or where there have been no updates to a listing for X period of time and they just move them to failed.Equity could be calculated based on FMV - original mortgage OR FMV - estimated current mortgage amount. 

But right now, i currently own a SF in KY and am house hacking a duplex in round rock Texas.

You do not own the home so you cannot use its equity instead you are borrowing money based off of the current owners sale price.Using the same banks/lenders Heloc in some cases can be fine since its attached to another home.

I am already over-leveraged into the project with LOC's and such, therefore I am looking for ideas for other sources of cash to supplement my current rehab loan to be able to get me across the finish line. 

@Sylvester Hardison, I am going to echo other's thoughts, but it also depends on what your current education level is and where you feel your weaknesses are.Within the multifamily space, for instance, there are a lot of groups out there.  

Realtor.com puts the property estimate at 287k, Zillow at 255k for the current values. 

Not saying this is best option but if you took out conventional loan at 6.5% and earned 12% you passively made 5.5% on money that is currently not optimized in your home.