Fences in residential zones may be erected, altered or reconstructed to a height not exceeding six feet above ground level when located to the rear of the front building line and not exceeding three feet in height when located in front of the building line or in a front yard. For the purpose of erecting a fence on a corner lot, the facade where the main (front) door is located shall be considered the front of the house. A fence up to six feet in height may be erected to the rear and side of the house adjacent to the side street as follows: The fence may begin at the rear corner of the house nearest the intersection to a distance calculated at half the required front setback for the zone, and then run parallel with the side street and extend to the property line. (Also see § 190-108 for lots having frontage on two parallel streets.) Fences on residential lots abutting designated scenic roadway corridors must also satisfy the requirements of the SC Scenic Roadway Corridor Overlay Zone.