No person shall trespass in, upon, or across the property of another without the permission and consent of the person in charge or control thereof, provided such person shall have posted at each of the corners of the property a notice, in writing, upon either a metallic or wood sign, or other substantial material, which sign shall be at least one square foot in area, and which shall be placed three feet above the normal level of the ground, and upon which sign there appear in legible letters, at least two inches in height, the words, “Private Property – No Trespassing,” and other words as may be desired indicating that trespassers shall be subject to prosecution. The sign shall have either a white or black base. In the event a white base is used, the letters shall be in black, and if a black base is used, the letters shall be in white. In the event the property exceeds a total area of one acre, in addition to the posting of such notices at the corners thereof, there shall be posted at intervals of 300 feet or less, on or near the boundary lines of the property, notices of similar character.

The provisions of this section shall have no application to a trespass committed by an officially authorized peace officer or law enforcement agent when such trespass is committed in the lawful execution of such officer or agent’s official duty, nor to any person visiting or calling at the residence or place of business of any person for the purpose of transacting any legitimate business. (2002 Code § 3-1.19).