Cook County Quick Claim Deed The Property Lines In Parent's Neighborhood Are All Off By 6 Feet! What Can Be Done To Fix This?Cook County,IL?

The property lines in parent's neighborhood are all off by 6 feet! What can be done to fix this?Cook county,IL? - cook county quick claim deed

My father found out when a new neighbor has tried to build a garage on the property. It was a timely action on the request, thirty years ago that protected property rights. The collected more than $ 4000 in legal fees for that reason. He just completed his tax liability. It rose by more than $ 1,500. The Cook County Assessor has given a new tax for the identification of 6 feet. Anyone who has his own long-term liberation and the liberation reversed by the owners. There are now additional taxes for the other inhabitants of 6 feet property.They are couple.They nice to have a fence, with trees and a swimming pool to six feet from my father, is now paying taxes. This proved to be a nightmare. Should not the people to adjust the property boundaries? It will be a domino effect for the entire apple. The houses, which more than 50 years. Billboards arewere in fact more than 30 years.The need much more than my father. What can we do?