Urban Planning Act Article 41

After an urban plan is announced and implemented, the existing buildings within the area that are incompliant with the zoning regulations may undergo reparation but annexation or reconstruction shall be disallowed. If deemed necessary, the concerned government of special municipality, county/city , or township may act according to the conditions and order the owners of such buildings to change the classification or relocate within a given period. The said authority shall make appropriate compensation for damages incurred from the said change of classification or relocation. Both sides shall negotiate to determine the amount of compensation. If both sides fail to reach consensus, the concerned government of special municipality or county/city shall request the Ministry of the Interior in writing to make the decision.
中文原文 都市計畫法第41條
都市計畫發布實施後,其土地上原有建築物不合土地使用分區規定者,除准修繕外,不得增建或改建。
當地直轄市、縣(市)政府或鄉、鎮、縣轄市公所認有必要時,得斟酌地方情形限期令其變更使用或遷移;其因變更使用或遷移所受之損害,應予適當之補償,補償金額由雙方協議之;協議不成,由當地直轄市、縣(市)政府函請內政部予以核定。

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