> My issue is that, under the proposed system, two people who each own half of Los Angeles will pay a lot of property taxes, because the other half of Los Angeles adds taxable value to their half, even if their half is unimproved.
That is the goal, isn't it. To remove speculation from land ownership. Under this model the owner of the unimproved part of LA has no right to the increase in his land value since he did nothing to improve it. He either continues paying increasing taxes, sells it, or starts improving it. I see no bad side to it.
> But one person who owns the entirety of Los Angeles will pay no property taxes, because the unimproved land is worthless. This system guarantees that there will be a small number of people who own vast quantities of land, because that ownership structure minimizes the total tax burden.
What would be this persons incentive to own all this land under this model? Besides, somebody on the edges of this property starts some development and suddenly LA owners taxes raise.
> Sale of land would vanish to nearly nothing, because not only would the land have a very low cost of ownership - selling some of your land would raise the taxes you have to pay on the rest of it, the part that you keep!
This doesn't follow from anything. Land would have very low costs only if it is land that nobody wants, just like today. And selling your land will not lead to higher taxes on your remaining land unless the land that you sold gets improved in such a way that it increases the value of your land. Why do you think that landlords are entitled to value created by somebody else?
>The total amount of tax owed is different depending on the structure of who owns the land. Why does that make sense?
I agree, it doesn't make any sense. Luckily, your conclusion doesn't follow from anything that you wrote. The total amount of tax owed is different depending on the value of the land. Do you think that that also makes no sense?