Administrative Procedure Act Article 42

An administrative authority may take evidence by inspection for the purpose of finding the true facts.The party shall be notified of the taking of evidence by inspection and requested to be present, unless it is impossible to give such notice.
中文原文 行政程序法第42條
行政機關為瞭解事實真相,得實施勘驗。
勘驗時應通知當事人到場。
但不能通知者,不在此限。

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