Without getting into the nitty gritty details of this particular deal, I generally would like to do know what type of loan is best for the initial short-term loan in a BRRR deal.  

I'd probably find a structure that includes a step-down prepayment penalty and one that's based on 5 year structure (5,5,4,4,3,3,2,2,1,1) or something similar or better. 

My initial thought is to do a down payment to “buy in” and then upon retirement, do a percentage of the gross sales for a set number of years to pay it off, rather than a set number or signing a note or something of the like.

After completing these steps, you could try to collect by filing a small claims court case and/or taking the matter to an attorney or collection agency to assist you.

It really breaks investing down in a simple way that makes it something that the average person can do with some investment in gaining knowledge, thinking outside the box, and simply taking that first step in investing.I am currently in the process of selling my first investment property with a couple of my business partners and I am looking to go all in on investing moving forward. 

They should be able to explain why the property is not renting, what steps they are taking to correct that, etc.3.

You could also just correct it and ask them to initial if they are in agreement but sounds like things didn’t go well.  

If it has been on the open market and he hasn't gotten any traction to the point he is willing to just get rid of it, you really need to step back and look at the quality of the deal.

@Sarkis GezalyanSorry for the initial sarcasm. 

We were set to close initially on November 15th, but during attorney review i discovered the current leases end Feb 28th in one unit and April 30th in the other two.