Temporary permitted signs. One sign per entrance of up to 32 square feet pertaining to a subdivision while under development may be permitted. Signs, including streamers, posters, pennants and similar devices, relative to noncommercial campaigns, sales, promotions, drives, or other events of political, civic, philanthropic, educational or religious organizations, may be located, subject to the consent of property owners, for a time period not to exceed 60 days. Message signs pertaining to the lease or sale of a building/property, or indicating ongoing construction/alteration/painting, are not to exceed four square feet in area, and notwithstanding the location requirements of Subsection A may be located no less than two feet from the street line. Such signs must be removed within 10 days of transfer of title or of the signing of a lease or rental agreement.