Urban Renewal Act Article 77

If an implementer delegated through open selection is found with unlawful acts or critical defects after the urban renewal project plan is approved and the condition is apparently disadvantageous to the owners and stakeholders, the owners or stakeholders may request the competent authority of the municipality or county (city) to investigate according Article 75 and take necessary action according to Article 76.
中文原文 都市更新條例第77條
依第十二條規定經公開評選委託之實施者,其於都市更新事業計畫核定後,如有不法情事或重大瑕疵而對所有權人或權利關係人之權利顯有不利時,所有權人或權利關係人得向直轄市、縣(市)主管機關請求依第七十五條予以檢查,並由該管主管機關視檢查情形依第七十六條為必要之處理。

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