Proposed mechanism: You declare the value of your land, but the government can buy it at the declared price if they want to. This also makes land acquisition for infrastructure straightforward and transparant.
There is a risk that the government will increase taxes such that people can't declare high land prices, which allows the government to buy up land for cheap. I haven't found a mechanism for that yet.
This mechanism would just get gamified. Some oligarch is gonna claim the property is worth nothing, and use their expensive legal team to prevent any attempts to purchase the property.
It'll also allow the government to bully anyone they want by evicting them, even if the price were fair. Local reporter digs up dirt on city council? Well, the city council just reviewed property tax claims, and decided that the reporter's house is "undervalued".
There is a risk that the government will increase taxes such that people can't declare high land prices, which allows the government to buy up land for cheap. I haven't found a mechanism for that yet.