Never EVER accept or agree to accept any tenant without properly conducting all points of discovery and creditworthiness [ability to pay], background [character] data [patterns of behavior in past residences], etc.

Would a unused, open HELOC affect my credit worthiness or increase the risk in the eyes of a traditional bank lender?

The only thing I'm coming up with is that he doesn't have the creditworthiness to get a bank loan.

Would a unused, open HELOC affect my credit worthiness or increase the risk in the eyes of a traditional bank lender? 

Based on my equity, creditworthiness, and history with them? 

With a creditworthy tenant, securing a non-recourse loan is more manageable, even for foreign investors.

ANNNND, if you get a DUNS number (not sure if these is required) you can improve the credit worthiness of your business, possibly allowing out take out larger LOCs or even selling it to someone else to take advantage of the businesses credit rating! 

Opting for a reputable entity within the industry is advisable, and seeking out reviews can provide valuable insights in this regard.When seeking qualification for a hard money loan, lenders typically scrutinize four key factors: company structure, creditworthiness, liquidity, and collateral.

• Credit worthiness: Does the prospective tenant have good history of paying bills on time, and is their debt to income ratio low enough that they can afford your rent while meeting other obligations? 

It was a Bank foreclosure in 2005, bought it with 2 mortgages out of the gate, a first and a second mortgage, because we were not creditworthy of a home.