Land Act Article 102

Where a building site is leased for house construction, the lessor and the lessee shall, within two months after the contract is concluded, apply to the competent Special Municipal or County (City) Government for the registration of the right of superficies over the said site.
中文原文 土地法第102條
租用基地建築房屋,應由出租人與承租人於契約訂立後二個月內,聲請該管直轄市或縣(市)地政機關為地上權之登記。

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