Building Act Article 82

Where it is of no time to notify the owner or occupiers in case of dangers caused by serious accidents such as earthquake, flood, windstorm, or fire, the governing competent authority may directly demolish the affected buildings coercively.
中文原文 建築法第82條
因地震、水災、風災、火災或其他重大事變,致建築物發生危險不及通知其所有人或占有人予以拆除時,得由該管主管建築機關逕予強制拆除。

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