Regulations on Real Estate Appraisal Article 103

For appraisal of a property where part of which is illegal, the illegal part will not be appraised. The above restriction does not apply when the clients require the appraisal and the respective values of legal and illegal parts of the subject property are stated in the appraisal report.
中文原文 不動產估價技術規則第103條
附有違章建築之房地估價,其違建部分不予以評估。
但委託人要求評估其價值,並就合法建物及違建部分於估價報告書中分別標示各該部分之價格者,不在此限。

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