In Arizona, city councils have broad authority to enact, amend or repeal laws that are "necessary or proper" to implement those powers that are granted to them. A.R.S. 9-240(B)(28)(a). By enacting A.R.S. 9-463.05(A), the Arizona Legislature specifically granted municipalities the power to impose development fees. That section provides: A municipality may assess development fees to offset costs to the municipality associated with providing necessary public services to a development, including the costs of infrastructure, improvements, real property, engineering and architectural services, financing, other capital costs and associated appurtenances, equipment, vehicles, furnishings and other personalty.