> Not really; yes, it reduces total volatitlity in property tax revenues asymmetrically, since tax assessments fall without restriction in downturns irrespective of turnover
The only tax assessments that fall during downturns are the folks who are underwater, that is, the recent purchases. The folks who aren't underwater get a 2% increase.
That's why, as I wrote, when there's a 20% downturn, most people still have a 2% increase, which keeps tax revenues from falling significantly. In other words, stable.
I write "most" because one of the key arguments of the "prop-13 is bad" folks are that most properties are paying too little tax because of when they were bought.
You can't have it both ways. If you make that argument, the arithmetic shows that prop 13 stabilizes property tax revenues during a downturn.