No officer, employee, or agent of the City of Grand Island shall issue any building permit, make any water or sewer connection, or issue any permit for any water or sewer connection for any building or buildings constructed or proposed to be constructed on land subdivided contrary to the provisions of these regulations. No officer, agent, or employee of the City of Grand Island shall perform or caused to be performed any construction or maintenance upon any street or public way purported to be dedicated as a public street or public way by virtue of being shown on a plat, unless such plat shall have been approved as provided by these regulations. The above prohibitions shall not apply to any plat or dedication legally filed of record prior to April 22, 1968.