Provisions are included in this article to permit the establishment of areas in which diverse uses may be brought together as a compatible and unified plan of development which shall be in the interests of the general welfare of the public. The PUD must provide for an efficient use of land resulting in an economical network of streets, utilities, and public facilities. The PUD must demonstrate a quality design including architectural styles, building relationships, and enhanced aesthetics. The PUD shall demonstrate a creative approach to the use of land that is not possible under the strict application of the provisions of this zoning chapter. The applicant must provide sufficient evidence for the Plan Commission to make each of the findings listed in section 24-422(6). In PUD, land and structures may be used for any lawful purpose in accordance with the provisions set out in this article. A PUD shall be permitted by the Plan Commission.