Household Registration Act Article 50

In case the whole household moves out of its place of domicile without conducting Moving-out Registration within the statutory time limit and the household cannot be notified, the Household Registration Office shall process the moving-out registration to immigrate the whole household to the address of the Household Registration Office directly under the application being made by the house owner, managing authority, or local government. Suppose the house owner, managing authority, or local government mentioned in the prior Paragraph does not make the application. In that case, the Household Registration Office shall process the registration directly to temporarily move the whole household to the address of the Household Registration Office.When an inmate in correction authority meets one condition of the preceding Paragraph, the Household Registration Office shall make moving-out registration to the corrections authority, and it is not bound by Paragraph 1 and Paragraph 2 of Article 16.When the Household Registration Office receives notification from the corrections authority that the inmate is released, it shall verify the fact. It shall process move-in registration by the Household Registration Office where the inmate lives.
中文原文 戶籍法第50條
全戶遷離戶籍地,未於法定期間申請遷徙登記,無法催告,經房屋所有權人、管理機關、地方自治機關申請或無人申請時,戶政事務所得將其全戶戶籍暫遷至該戶政事務所。
矯正機關收容人有前項情形者,戶政事務所得逕為遷至矯正機關,不受第十六條第一項但書及第二項規定之限制。
戶政事務所接收收容人出矯正機關通報後,應查實並由收容人居住地戶政事務所辦理遷入登記。

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