> It seems like the timing of things is such that by the end of your 25 year mortgage the house is worth $0. Ok.
> So what happens if after this point you want to borrow against your house?
You… don't? You never did? What do you fail to understand in "the land is worth money, the house is not"?
> In NA nbd since the bank knows it can sell the house. In Japan is the bank squeamish about whether they can sell the house because the house is "worth $0."
Japanese banks are squeamish either way, but they can sell the land. The land is not worth $0.
> Similarly I wonder if you wanted to buy a house that is "worth $0" is the bank only going to give you a mortgage if you are going to knock it down and build a new house?
You're not buying a house, you're buying land, which has a house on top of it, which you may want to replace.
When you buy a car you buy a car, you don't buy the seat upholstery, and you can replace that. Well the land's the car, it's the actual thing.