Administrative Litigation Act Article 14

For other litigations outside the scope of the preceding Article, a defendant may be sued in the administrative court for the place of the defendant's domicile or, when that court cannot exercise jurisdiction, in the administrative court for the place of defendant's residence.Where a defendant has no place of domicile in the R.O.C., or where the defendant's place of domicile is unknown, then the defendant's place of residence in the R.O.C. shall be deemed to be the defendant's place of domicile. Where the defendant has no place of residence in the R.O.C. or where the defendant's place of residence is unknown, then the defendant's last place of domicile in the R.O.C. shall be deemed to be the defendant's place of domicile; where a defendant has no last place of domicile, the place where the central government is located shall be deemed to be the last place of domicile of such citizen.A defendant may also be sued in the administrative court for the place of defendant's residence if facts of litigation take place within the defendant's residence.
中文原文 行政訴訟法第14條
前條以外之訴訟,由被告住所地之行政法院管轄,其住所地之行政法院不能行使職權者,由其居所地之行政法院管轄。
被告在中華民國現無住所或住所不明者,以其在中華民國之居所,視為其住所;無居所或居所不明者,以其在中華民國最後之住所,視為其住所;無最後住所者,以中央政府所在地,視為其最後住所地。
訴訟事實發生於被告居所地者,得由其居所地之行政法院管轄。

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