Advice on seller finance deal

[Andrew Fogle]

Hello everyone, 

First time post, looking for some advice. I’ve found a property, an apartment building. Owner is looking to seller finance for 30% down payment, remaining 70%  at 7% interest, first 5 years interest only. I’ve got about 1/3 of the down payment cash, I’m unable to get a loan for the remainder from the bank. Looking for ideas on how to come up with the remainder of the down payment or change the terms so the seller may agree. ALL IDEAS WELCOME! 

Thanks