Parking Facility Act Article 19

For buildings with built-in parking facilities in accordance with the Building Act that are insufficient to meet local needs, the municipal or county (city) government authority shall work in conjunction with the urban planning authority to set standards and conditions to encourage constructing additional parking spaces and incorporate them into the regulation of Urban Planning.For buildings with aforementioned built-in parking facilities or old buildings without such facilities, the government authority shall, depending on its actual needs, consult and work together with the relevant authorities to increase the number of built-in parking spaces when extending the buildings or changing their purpose of use.
中文原文 停車場法第19條
建築物依建築法令附設停車空間不敷當地實際需要者,應由直轄市、縣(市)主管機關會同都市計畫主管機關擬定其增設標準及設置條件,納入該都市計畫內定之。
前項已附設停車空間之建築物或未附設停車空間之舊建築物,主管機關應視其實際需要,於增建或用途變更時,協商有關機關責成增設或附設停車空間。

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