In my system, we do not rent land from the govt or lease it. There's none of this going to the govt. every year and applying for a leasehold. No. We own the land and we trade it. The Govt. always taxes land based on the price at which it last changed hands, there are no govt. appraisers of the land value pining about to raise your LVT. If you want to own someone's land than you go to the owner and propose to buy it. If a prospective buyer wants the land and the owner refuses to sell except at a significant premium, there is a judicial mechanism available to force a sale. The buyer must post to bond equal to the next years anticipated higher tax amount. He must be willing to pay more above the current level than just a bare scintilla, otherwise the judicial mechanism would become subject to abuse. Of course the owner can offer to pay the higher tax and then keep the land, but that is the only way he can keep it once the judicial proceeding is initiated. Buyer pays all proceeding fees and court costs.
If land falls in value should we allow the owner to pay less tax even if he does not sell it or engage in transaction? Yes. The owner may initiate a judicial proceeding, and upon proper showing that the value has in fact fallen, he may be taxed at the lower rate.
So there is two ways land may be assessed a higher value (either free exchange or judicial procedure). And two ways it may be assessed lower (either free exchange or judicial procedure.)
No administrators. No assessors. We need a filing office to keep track of when land changes hands and at what price and who owns it. Everything else follows.
Your system sounds like nothing but a simple property tax, plus the ability to force land sales by bribing the government (paying outrageously high property tax).
Hold the horses here, Helmuth, you say! It's a land tax, not a property tax! Ahh, but the market is far ahead of you. Your land tax is determined solely by tracking land transactions, no gov't assessment. How often does land get sold without the improvements being sold along with it? Not often. It happens more often in urban areas where the lot and the building can be more easily separated, but even there such a land-only sale is generally rare. So when I sell my house and its lot for $40,000, how does the gov't know how much the lot is worth? It doesn't! It knows it's worth less than $40,000, at least to the person to whom I sold it, but other than that it knows nothing.
Perhaps you realize this is a property tax including improvements and are fine with that. But I assume you are not, otherwise in what sense are you geoist, right?
So what's the solution? Forcing buyers and sellers to separate the land component from the improvement component would be the best solution I can think of, if I were forced to administer your system and try to make it work. So there would be two separate title transfers, one for the lot, and one for the house.
But would this be likely to give the gov't all the information it needs? Not hardly! In states where the sales tax or license plate tax on cars is determined by what the amount says on the bill of sale, what do people do? They agree to sell the car for $50. And the buyer gives the seller a $1950 "gift" in gratitude. So if the lot sale is getting taxed, but the improvement sale isn't, want to guess how much the lot is going to sell for?
Furthermore, there's a thing called an "open title". The seller gets the deed signed away and notarized, but doesn't fill in the buyer. This title may then change hands ten times before years later some strange buyer decides they hate themselves and want to pay the state for the privilege of having a new, crisp title with their name printed on it. This same thing could happen under your property tax system. Why report the sale if it just will result in higher taxes for the buyer? Everyone keeps their mouth shut, and everybody wins -- except for the state, or if you believe the mythology "the people", who of course are not getting their cut.
America was built on smuggling, and we are experienced tax-dodgers. If a heavy land tax is
the big tax supporting the state apparatus, you'd better believe that it's going to be dodged. Your system, as explained so far, would make it trivially easy to dodge. Not only will most sales just not be reported at all, of the ones that
are reported many will under-report the total, and those that for some reason must report the real total will all drastically under-value the land and over-value of the improvements. Why wouldn't they? Roy's system of assessors and miraculous computer programs is much more realistic as far as making it difficult to dodge and being able to clamp down on dodgers (dodgers without pull at the assessment bureau, that is).