Land Act Article 63
The area of land that is to be definitively registered according to the provisions of the preceding Article shall be that which is obtained by an actual survey of the land made within the boundaries indicated by documentary evidences.In case the boundaries indicated by documentary evidences referred to in the preceding paragraph are not clearly defined or show discrepancies, the area obtained by an actual survey of the land shall be registered, if it does not exceed the area indicated in the documents by 10 per cent. But if the area obtained by an actual survey exceeds that indicated in the documents by more than 20 per cent, the excess area shall be regarded as land owned by the State; but the original occupant shall have preferential right to purchase it and apply for registration thereof.
中文原文 土地法第63條
依前條確定登記之面積，應按原有證明文件所載四至範圍以內，依實際測量所得之面積登記之。
前項證明文件所載四至不明或不符者，如測量所得面積未超過證明文件所載面積十分之二時，應按實際測量所得之面積予以登記，如超過十分之二時，其超過部分視為國有土地，但得由原占有人優先繳價承領登記。
前項證明文件所載四至不明或不符者，如測量所得面積未超過證明文件所載面積十分之二時，應按實際測量所得之面積予以登記，如超過十分之二時，其超過部分視為國有土地，但得由原占有人優先繳價承領登記。