None required along common boundary line of property in a commercial, industrial or buffer zone;

None required where the property being developed for parking abuts other property in zones R-1-P, R-2-P, R-3-P, and R-4-P, which is not used for residential purposes, until such time as such abutting property is used for residential purposes;

Where the property being developed for parking abuts property in a residential or an agricultural zone, or property in zones P, R-1-P, R-2-P, R-3-P, or R-4-P, used for residential purposes, a masonry wall six feet in height shall be erected and maintained along the common boundary line of such abutting property. Such wall shall not extend into the front yard or side yard setback required in any abutting residential or agricultural zone or property in zones P, R-1-P, R-2-P, R-3-P, or R-4-P used for residential purposes. Such wall shall not be less than six feet in height above the surface of the parking lot and not less than four feet in height above the surface of the adjoining property. If the wall is more than six feet in height above such adjoining property, then it shall be set back from the adjoining property line a distance of one foot for each foot in height above six feet;

Where the property being developed for parking is across a street or highway from property in a residential or agricultural zone or property in zone P, R-1-P, R-2-P, R-3-P, or R-4-P used for residential purposes, such fence or wall shall be not less than two feet nor more than three and one-half feet in height, and shall be erected and maintained not less than five feet from the front property line. The area between the property line of such lot and such fence or wall shall be planted with lawn, shrubs, or flowers and shall be continuously maintained in good condition;

Where the property being developed for parking is across a street or highway from property in any zone other than a residential zone, or property in zones P, R-1-P, R-2-P, R-3-P, or R-4-P, are used for residential purposes, a fence or wall is required as provided in subsection d above, except that such fence or wall may be closer than five feet to the property line, if the location and type of the development is approved by the city engineer;

The fence or wall required along the front of such property shall not be nearer to the front property line than the required front yard or side yard of such abutting property for a distance of fifty feet from such common boundary line and shall be not less than two feet nor more than three and one-half feet in height. The area between the property line of such lot and such fence or wall shall be planted with lawn, shrubs, or flowers and shall be continuously maintained in good condition.