Nothing in this Ordinance shall remove, abrogate or render inoperative any lawful covenant running with the land, easement or other agreement between parties. Provisions of this Ordinance shall apply to all structures and land of any political subdivision, district, taxing unit or bond-issuing authority located within the corporate limits of the City to the extent allowed by law. All public officials of the City, vested with the duty and authority to issue legal documents, shall not issue permits or certificates for any structure that would result in conflict with this Ordinance. However, should such a permit or certificates be issued and be in conflict with this Ordinance, it shall be deemed null and void.