This why we need the tiny home movement combined with progressive property taxes - 0 prop tax bracket for lowest 20% property values If you have mortgage then you don’t really own your house.
Or tiny homes like the luxury single occupant container buildings on a bit of land?
Tiny homes are not the solution, they are hipster semi-cottage-core fashion homes. You're probably thinking of regular apartments, but for some reason they aren't built at the rate needed. Build ten million apartments (for starters) and the cost of living will go down. Satisfy / saturate the market first, then think of gentrifying with fashion homes.
crabs in a bucket. Those who got in and got theirs don't want their property value falling. Americans treating housing as a stock instead of a necessary resource for living really ruined a lot of the dynamic of city planning.
That said, I think it is a pretty bad idea. Use of public funds dont increase with property value, it just means you have deeper pockets. I would be more in favor of flat taxes on homes independent of value, so people pay their fair share for community resources consumed.