[korantu]

The way you keep your property price up is by not allowing others to build more property around you. When person days - i want to keep my property price up, what he really says is - i dont want more people to live near me.

It is very different from other kinds of values - for example car is getting more expensive if it is fancier/more unique, but its price does not change with production of way cheaper cars , which all can go same places.

This is why insisting on your house keeping same value is very harmful to other people - this can only be achieved by denying these people the place to stay in the same area.