without inflation you can't have mortgages, and mortgages are the backbone of the fiat banking credit expansion, that's also why the saying "safe as houses" - because it's the banksters cash cow, so you fight inflation with property ownership - and tax benefits as well, like deferring any tax obligations until the property actually is sold

so the answer is - under a bitcoin standard there is not any such thing as a mortgage anymore, and the price of property will fall into line with the productive capacity of the land and its number of competing buyers and its other subjective properties