A. Identification signs for subdivisions containing more than twenty (20) homes and mobile home parks shall be permitted, provided that:
1. The size of any such sign shall not exceed twenty (20) square feet nor exceed eight (8) feet in height above finished grade;
2. Not more than one (1) such sign is placed on any premises held in single and separate ownership or developed as a unit, unless such property fronts upon more than one (1) street, in which event one (1) such sign may be erected on each frontage;
3. Said signs may only be located on the premises that they identify; and
4. Such sign shall not obstruct vision at road intersections and shall be landscaped in keeping with adjacent property.