Some/many lenders don't like a 2nd mortgage behind their first (like the skin in the game), however there are both bridge or permanent financing options out there allowing you to leverage anywhere from 90% CLTV - 100% CLTV, but don't expect good terms...

Seller was not willing to extend contract or accept creative financing options.

I am looking for recommendations for best financing options.The owner is considering financing it, but until they agree, I am planning as if they will not do so.The local credit union I use, who is very investor friendly, is unable to lend on properties larger than 4 units right now. 

I’m not sure what is the best option here, if anyone could shed some wisdom that would be immensely appreciated. 

Otherwise, I recommend option two, using a personal loan.

What would be my best approach, I assume find a private lender and work out some deal with them.All questions and answers will help thank you. private lender would be one option - also can you get traditional financing from a bank? 

https://www.biggerpockets.com/blog/biggerpockets-podcast-262...The info in this podcast addresses financing

I own a mortgage company now that does both residential and commercial finance, but I spent years as a commercial banker with both big banks (First Union/Wachovia) and 2 community banks.

A HELOC offers flexibility and lower interest rates, which can be ideal if you’re looking for short-term financing with lower payments during construction.

I'm in the process of vetting some seller financed deals for my solo401k portfolio.