The purchasing power of your money, on a Bitcoin standard, should forever go up as the price of everything you want to purchase comes down. So as your stash of Satoshis increase as you save across time, the number of Satoshis needed to buy a house will decrease over time. If we were to plot on a graph, the increasing line indicting your savings will cross the decreasing line showing the price of a house. So as long as you save to buy your house outright vs attempting to buy your house with debt, a home will forever continue to become closer to within reach across time.