I left Illinois in 2013. Taxes on my house downstate were 5%. Taxes on my house in Chicagoland were 8%.
As taxes go up ... and as working people continue to flee ... Illinois house values will continue to stagnate at the bottom. Supply exceeds demand. That simple.
So the tax RATE will have to go up even higher, or the assessments will have to be very phony, in order to collect more money. But house values will go down in direct proportion to taxes going up.
Some problems are unsolvable, which is why bankruptcy exists.
Unless a state's constitution prohibits it.