Nothing in this section shall preclude the City of Reading Property Maintenance Inspector instituting the appropriate proceeding at law or in equity, to restrain, correct or abate such violation, or to require the removal or termination of the unlawful occupancy of the structure in violation of the provisions of this Code or of the order or direction made pursuant thereto. Any action taken by the authority having jurisdiction on such premises shall be charged against the real estate upon which the structure is located and shall be a lien upon such real estate.