I think it's possible to housing to be affordable and for it to behave more similarly to to something like gold than something like a bond or stock. That said,

I think it's possible to housing to be affordable and for it to behave more similarly to to something like gold than something like a bond or stock. That said, it's quite tricky because of property taxes - if they applied to gold imagine what it would do to gold bugs. Fortunately, real estate can be rented, which isn't really a thing for gold. But to complete the analogy, it seems like the goal should be for residential values in terms of build price per some typical target like ~1500sqft/3br (regardless of form) to remain relatively constant adjusted for inflation and relative to % of median wage while allowing land value to adjust density to match. This allows people to gain from selling to convert from low density to high density, but keeps affordability relatively constant. This likely means that some kind of alteration in tax or sale regime to promote transition to higher density and not just transition to higher value should be present in the market. (IE in places where 1acre is going for ~$1million, it should make more sense for someone to buy and convert to multiple units than for someone to just buy.) This would lead to expensive areas starting to convert to higher density leaving lower value areas to the main option for single family inflows. (Of course this will have loopholes - obviously it incentivizes the "rich enclaves using a COOP" type of model if the tax pressure were assessed at sale - so it need to be thought through more clearly.) Edit: That said, I do think there's something to your organism analogy. For example, all of what I wrote above given, it explains why it'll still be impossible to find a good plumber and that does interact with the price of building.