The problem is that property taxes in america are by a percent of the property's assessed value. Why should a homeowner pay more for the roads than their neighbor does because they put in a hot tub?
YOU'RE NOT PAYING TAXES FOR THE PROPERTY, YOU'RE PAYING YOUR TOWN FOR THE SERVICES IT PROVIDES. THE ROADS, POLICE, SCHOOLS, FIRE DEPARTMENT, LIBRARY, SNOW PLOWS, EMERGENCY SERVICES AND SO MUCH MORE.