An open terrace, but not including a roofed over porch or terrace, may occupy a front yard, provided the unoccupied portion of the front yard has a depth of not less than fifteen feet (15'). A one story bay window may project into a front yard not more than three feet (3'). Overhanging eaves, including gutters, may project over the minimum required side yard not more than eighteen inches (18"). (1965 Code § 11-2-6)