municipal development fees; proportional fees

HB 4066 sets rules for how Arizona cities and towns can charge development fees to new construction projects. It requires fees to be proportional to the actual cost of necessary public services (like roads or water systems) needed for the development, based on service units, and tied to an approved infrastructure plan. The bill prohibits using these fees for general municipal operations, facility upgrades beyond current needs, or maintenance of existing services. All collected fees must go into a separate fund and can only be used for the specific infrastructure improvements identified in the plan, directly affecting developers who pay the fees and municipalities that collect them.