Ariz. Rev. Stat. § 11-817
A. The board of supervisors may establish procedures, methods and standards for the transfer of development rights within its jurisdiction. Any proposed transfer of all or any portion of the development rights of a sending property to a receiving property is subject to the written approval and consent of the property owners of both the sending property and the receiving property. A county may not condition a change of zone on a property owner's consent to or other participation in a proposed transfer of development rights, except that a change of zone may be required to implement a development agreement if it is voluntarily entered into by a property owner or owners with a county for the transfer of development rights concurrently with the county's approval of the change of zone. Before any transfer of development rights, a county shall adopt an ordinance providing for:
E. For the purposes of this section: