Building Act Article 48
The municipal and county (city) (bureau) competent authorities of construction shall define the borderlines of the roads already announced as the building lines. Where it is prescribed in the detail plan that the buildings must be setback, such prescription shall apply.For the existing laneways other than described in the above paragraph, building lines shall be otherwise determined where it is deemed as necessary by the municipal or county (city) (bureau) competent authority of construction, and the determination method shall be prescribed in the regulations on construction management.
中文原文 建築法第48條
直轄市、縣（市）（局）主管建築機關，應指定已經公告道路之境界線為建築線。
但都市細部計畫規定須退縮建築時，從其規定。
前項以外之現有巷道，直轄市、縣（市）（局）主管建築機關，認有必要時得另定建築線；其辦法於建築管理規則中定之。
但都市細部計畫規定須退縮建築時，從其規定。
前項以外之現有巷道，直轄市、縣（市）（局）主管建築機關，認有必要時得另定建築線；其辦法於建築管理規則中定之。