Bay windows, chimneys, flues, columns, sills, ornamental features, cornices and gutters may project not more than two feet over a required side yard. A garage or carport constructed as a structural part of a dwelling may extend into a required side yard for a distance not exceeding four feet provided it has no window openings at the side, does not exceed 14 feet in height, and does not extend nearer the side property line than five feet.