Assessment by taxing authorities does not equal value.
Jeeze.
So let's try this with simple English.
You find a house you want to buy. You are going to finance it. AKA, the lender is now YOUR partner in this endeavor. What happens?
You make an offer, it is accepted. Let's say the deal is for 1mm. You are going to borrow 800k. What transpires next from the finance perspective?
The lender MAY require that the property be appraised. They will have a THIRD PARTY firm go out to the property, photo it, dig into it, then generate a report to show what the APPRAISER feels it is worth. If the appraiser says it is worth 500k, well . . . the bank will say, "WTF?" If the appraiser says it is worth 2mm, the bank will still say, "WTF?" That property better appraise for +/- 3% of the purchase price. WHY? Because the bank is your partner and if you default, they want to minimize their downside risk.
Now let's look at how some states handle property tax. In California, OMG, it is so simple. When the deal closes, that establishes the VALUE. That value is now the baseline. The first year you pay (numbers may not be 100% accurate) 1.1% of the purchase price as property taxes. Then the next year you pay a little more than the previous year (I am too lazy to look it up, I think it is a percent more.) There are NO appraisers who come out.
That system works wonderfully if you have values that always go up. When the financial crash hit in 08, every homeowner filed paperwork to reasses their house.
In Florida, which I think is the same as NY, there are county appraisers. When the property changes hands, it gives them a clear GO to reassess. That will establish a baseline. Then a couple of things happen. One, the multiplier that is used against the value can fluctuate. Second, the value of the property can change each year. It can go up, it can go down. In Broward county, they split the land and the building out. Most of the time, they use a blanket formula to change the values of the land and building. You can appeal it though and most of the time, you may get a little bit of a gain, but not much.
The situation with Trump is he was applying intangibles to the property. What is the value of Coca Cola's trademark? We all know it has some value, we do not know what it is worth. FASB has methods to handle this. It is NOT perfect. It is subjective to a point. Trump though, was bypassing those measures. Trump was inflating the value of his properties because he was thinking (1) the underlying real estate was worth more than it was and (2) applying his trademark to it. I THINK, when there will be a trial, that Trump will be busted as well as Mazzars for not following FASB for valuation of trademarks, aka the intangibles.