Temporary, nonilluminated signs of contractors, painters, or similar artisans, erected on the premises where the work is being performed, provided that the maximum area of any one side of the sign shall not exceed eight square feet, that the total area of the sign shall not exceed 16 square feet, that not more than one such sign for each contractor, painter, or similar artisan shall be erected on any property under single ownership, and that the sign shall be removed within one day of the completion of the work.