The design of buildings within the PUD shall be designed in such a manner to present an overall architecturally unified development through the use of similar materials, colors, architectural elements, etc. The architectural design of any building shall be acceptable to the city. Three hundred sixty degree (360°) architecture is required of all primary building structures. No wood, masonite, visible asphaltic exterior wall or roof material, aluminum siding, nonarchitectural sheet metal, concrete block, precast concrete panels, Dryvit, EIFS, or other similar materials shall constitute a portion of any building except as a trim material, unless the city council of West Des Moines, after having received a recommendation from the plan and zoning commission of West Des Moines shall determine said material when used as a primary element, enhances the physical appearance. (Ord. 1721, 1-2-2007)