I think you should go to a conventional large bank and get a mortgage for this property.

I would suggest you go and talk to a local credit union or bank.

I am having a challenge finding a small bank or credit union to pull cash out of SFR investment properties which I own free & clear.

And some weirdos (like me) bake in a lot of "what would happen" scenarios when we're doing financial projections trying to model out a pullback and we have a bunch of money sitting in bank account earning 1% as a "just in case" reserve fund.  

We really like the idea of AirBnB-ing the property, and found the website offers a co-host option for those times we wouldn't be in town to handle check-in/check-out, etc.

A tenant could also burn your property down or a host of other issues.

I'd first see how big of a HELOC I can get, and start going to all sorts of banks looking for commercial loans, and maybe even a hard money lender to generate more.

You should keep in mind your bank/lender is looking at your property with a safety factor of some kind.

I definitely don't want to send a signed and notarized construction lien release to their lawyer without cash in my bank or subject to escrow.

Also would like to know about the bank negotiations.