Permitted nonresidential uses and any legal nonconforming, nonresidential uses, but not including home occupations as defined in § 95-4, may use one freestanding identification sign not to exceed eight square feet in total face area per side with a maximum of two sides, shall not exceed four feet in height from grade, shall be located within the front property line and 10 feet to the side or rear property line, in addition, each building may use one wall-mounted sign not to exceed eight square feet in area.