Commodities like houses maintain their value.
If you sell your house, you have money to buy that same house. Those is true no matter where or when.
If you buy a house for $100,000 and the price goes up to $200,000, you can sell it for $200,000 and buy another equivalent house.
If the price drops to $50,000, you can sell it for $50,000 and turn around and buy another equivalent house.
It's the fiat that loses value, not the house.
maintainance costs, taxes ...
also this
You have to look at the *total* cost of the house, not just its sticker price. This includes all the maintenance that goes into keeping the property in shape (eliminating pests, landscaping, exterior work, routine interior upgrades, etc.) as well as property taxes and mortgage interest (if collateralized).
Your opportunity cost of owning the home is the sum of all these outlays, compounded over time.
