Enforcement Rules of the Cultural Heritage Preservation Act Article 18

The review procedures stipulated in Article 20 Paragraph 1 of the Act shall commence on the date the competent authorities issue the field survey notice. When the competent authorities issue the notice, they shall reveal the notice and the fact that the building has become an interim monument on the site of field survey.The competent authorities shall notify in writing to the owners, users, managers and the competent authorities in charge of the relevant affairs for that interim monument about the scope of the land on which the interim monument is erected, the period of the interim monument, and other matters set forth in Article 20 Paragraph 1 of the Act.The preceding paragraph shall apply mutatis mutandis to the interim monument for which its prescription as an interim monument is extended under Article 20 Paragraph 3 of the Act before the expiration of the prescription.After review by the competent authority, if the interim monument specified in Article 20 Paragraph 1 of the Act does not have the value of monuments, historic buildings, commemorative buildings, or groups of buildings, within the period specified in Paragraph 3 of the same Article, the competent authority shall notify in writing to the owners, users, managers and the competent authorities in charge of the relevant affairs. Starting from the issue date of the written notice of the competent authority, the interim monument loses its validity.
中文原文 文化資產保存法施行細則第18條
本法第二十條第一項所定審議程序之起始時間,以主管機關辦理現場勘查通知書發文之日起算;主管機關於發文時應即將通知書及已為暫定古蹟之事實揭示於勘查現場。
主管機關應於前項發文日,將本法第二十條第一項暫定古蹟、其定著土地範圍、暫定古蹟期限及其他相關事項,以書面通知所有人、使用人、管理人及相關目的事業主管機關。
依本法第二十條第三項延長暫定古蹟審議期間者,應於期間屆滿前,準用前項規定辦理。
本法第二十條第一項所定暫定古蹟於同條第三項所定期間內,經主管機關審議未具古蹟、歷史建築、紀念建築或聚落建築群價值者,主管機關應以書面通知所有人、使用人、管理人及相關目的事業主管機關,並自主管機關書面通知之發文日起,失其暫定古蹟之效力。

English translation for reference only; the Chinese text prevails. Not legal advice.