Or we could just move beyond property taxes as a means of funding municipalities. Trying to tie the market values of one's house to taxation, then trying to untie them from market fluctuation, is simply a poor heuristic for measuring a person's capability to pay taxes. A much better heuristic is progressive income taxes. So here's an idea: make real estate taxes more equal, more nominal, and more predictable long into the future. Then close tax loop-holes and use income taxes on state level to fund municipalities. Nice side effect is that funding could be based on need rather than how rich your neighborhood is, which would improve the equality and fairness in social services provided. And no more moving to the rich suburb because you want your kids to go to a good school.