I'm thinking about buying my first house, and I'm wondering whether I should get a mortgage from a bank or not. This is mostly because I've heard that getting a mortgage is critical part of building up one's credit history. I guess the reasoning is that, because mortgages are so huge, they're somehow better than small credit card payments or other factors?
The alternative would be to borrow a lot of the money from family, who would charge not much interest and not be very demanding about repayment. Of course, that would cost less in the long run, but it also wouldn't build up any credit history.
So I have two related questions: how big is a mortgage's impact on credit history and credit rating, and specifically, is it big enough that I should get one? Or should I go with the borrowing from family plan? Or maybe half the money from one, half from the other?
Also, I don't know what happens when you try to sell a house before a mortgage is paid off. So, in case it matters, I'm planning to live in this house for four years, six tops, then sell it and move to another city.
Absolutely everything about the home buying process is still new to me, sorry if I left out any important detail, please tell me and I'll add it in.