For the son to qualify for the $250k exclusion, I believe he would most likely need to meet the ownership and use test, meaning he needs to own and live in the home as his primary residence for at least two of the last five years before the sale.

This is my first commercial deal and 2nd seller financed deal. 

@Cristiana Rios we own three properties in Costa Rica.

The property manager brought it to my attention only once and I told him to fix it.

Hello all,I am interested in small multi-family and land acquisition.

@Justin Smith Bernie Madoff and every other scammer also did deals with & thru family & friends.Just be careful and good luck!

The difficulty comes with tracking and enforcement.

I have been narrowing down some markets and trying to explore/research more and network.

With the use of VRBO, Booking.com and direct bookings can all raise your chances of staying booked and being successful.  

You can also search Google and read reviews.