… I already proposed a better system. Let the government adjust market values via passing laws as needed.
Obviously humans aren’t rational actors, so assuming as much would be dumb to use as the basis of an economic system. People generally are shortsighted- they build on flood plains, for example, or use toxic building materials that cause damage long term (ex: asbestos), or whatever.
Nor should humans be expected to be rational actors. (!) You shouldn’t need a PhD in biochemistry in order to evaluate water quality impact to health, in order to buy a home. If we require people like software engineers to be full blown doctors just to rationally evaluate a place to live, we have failed as a society.
Allowing the government to declare homes uninhabitable is clearly better than a pure market based system.
When someone sells their house, the price is an agreed upon valuation by buyer and seller. It’s probably the closest to true value we’ll ever get.
How do you propose to value better?
If they are selling for more than $0, then someone values them.