ZONING: OR Office Research - The OR Office Research district is established to allow the development of business and professional offices, "higher intensity" multiple-family residential and mixed-use residential developments, and other compatible uses in a planned park-like setting. The district is intended to serve the Village and the surrounding urban region. Because of the unique character of properties located within this district and its proximity to the Edens Expressway, the Old Orchard Interchange, Cook County Forest Preserve and adjacent residential properties in other municipalities, all properties within this district require site plan approval.