Notwithstanding any other provision of law, if the state or a political subdivision has a property interest in real property and that property has an existing public function in addition to any historical site registration or historical significance determination, the governing body of the agency or political subdivision owning the property interest may, subject to the following provisions, improve, alter, modify, or destroy that property if the agency or governing body determines that action is necessary to protect public health or safety, to provide access for disabled persons, or to ensure structural integrity. If an action is to be taken by an agency or governing body under this section, notice of intent to take the action must be given to the director at the onset of the planning process. At the director’s request, the agency or governing body shall inform the director of each meeting at which planning or decisions on a project are on the agenda. At each meeting, the agency or governing body shall provide the director with an opportunity to comment or provide preservation funding for the proposed project and the agency or governing body shall consider the director’s comments or offers of funding in the development and implementation of the project. If the agency or governing body and the director do not agree on the action to be taken, the differences must be submitted to a mediator selected by the governor to facilitate a consensus between the parties. The cost of the mediator must be shared equally by the parties. The mediator shall issue a report within sixty days of appointment by the governor. The report of the mediator must be sent to the director and must be published once in the official newspaper of the political subdivision. Although the agency or governing body may take the action it deems necessary, the agency or governing body shall make all reasonable effort to preserve the historical characteristics of a site taking into consideration economic and technical feasibility. The agency or governing body must notify the director of its decision and must publish it once in the official newspaper of the political subdivision. After mediation, if any, if the governing body of a political subdivision determines to proceed with actions that will result in completely demolishing, removing, or significantly degrading the historical characteristics of a building or real property, a resident of the political subdivision where the building or real property is located may submit a written notice to the county auditor of intention to petition for a public vote. The notice must be filed with the county auditor within fourteen days of the publication of the decision of the governing body. A petition for a public vote must contain the names of at least ten percent of the qualified electors from that governing body’s jurisdiction who voted in the last general election and must be filed with the county auditor within one hundred twenty days of the governing body’s publication of notice    of its final action. If a petition is filed, the matter must be submitted for a vote of the qualified electors at the next special, primary, or general election held in that jurisdiction. All actions to remove, demolish, or significantly degrade the historical characteristics of a building or real property are stayed for fourteen days after the governing body’s publication of notice of its final action, and if notice of intention to seek a public vote is filed, actions are stayed until either the petition fails or the public vote is held. If the political subdivision is a home rule jurisdiction with its own referendum procedures, however, the home rule referendum procedures apply to the action of the governing body.