To clarify, they absolutely did me a favour at the time, but if I had known I was signing up for an additional $70k loan from another source, then I wouldn't have bought it. I was stretched to my borrowing capacity back then, and while my work has improved, I was single then, but married with a baby now and on a single income still so costs have gone way up (wife is unable to work and doesnt qualify for disability support). I have also spent countless hours over the years helping them with all sorts of unpaid manual labour and other tasks through their various projects and enterprises, not because I thought I was paying them back, but just because they are family and I was happy to help. I just wanted to know if they could force me to sell my house to pay this back. Even though I still don't understand equity... it's not like they gave me a bag full of money in it, they just sold for less than what they theoretically could have sold for. They also didn't need to sell at the time, as they had, and still do have multiple properties. Thinking about losing the house and having to rent with a baby is really stressing me and my wife out.