One. As investments go, it's not always a great deal. While it's true that some homes do appreciate, so do many other assets. If you bought a house for, say, $200,000 thirty years ago, it would be worth $468,375.09 today. While that gain feels impressive, that appreciation is based solely on inflation - which means that, in theory, the same appreciation would have happened with any asset. While we did "make" money on the sale of our house, I suspect we would have had a similar increase had we invested that money in the market or in our business.