When land rent or rental fee for land (hereinafter referred to as "land rent, etc." in this Article and the following Article) becomes unreasonable, due to the increase or decrease in tax and other public charges related to the land, the rise or fall of land prices or changes in other economic conditions, or in comparison to the rent, etc. of similar land in the vicinity, the parties may request the increase or decrease in the amount of land rent, etc. in the future, notwithstanding the contract terms and conditions; provided however, that when there is a special agreement stating that land rent, etc. will not be increased for a certain period of time, the provisions of the special agreement prevail.
地代又は土地の借賃（以下この条及び次条において「地代等」という。）が、土地に対する租税その他の公課の増減により、土地の価格の上昇若しくは低下その他の経済事情の変動により、又は近傍類似の土地の地代等に比較して不相当となったときは、契約の条件にかかわらず、当事者は、将来に向かって地代等の額の増減を請求することができる。ただし、一定の期間地代等を増額しない旨の特約がある場合には、その定めに従う。
If no agreement is reached between the parties regarding the increase in the amount of land rent, etc., until the judicial decision establishing that the increase of the amount is valid becomes final and binding, it is sufficient for the party that has received the request to pay a land rent, etc. in an amount that is found to be reasonable; provided, however, that when the judicial decision becomes final and binding, if the amount that has already been paid is insufficient, the amount of the shortfall must be paid with the addition of interest on late payments at the rate of ten percent per year.
地代等の増額について当事者間に協議が調わないときは、その請求を受けた者は、増額を正当とする裁判が確定するまでは、相当と認める額の地代等を支払うことをもって足りる。ただし、その裁判が確定した場合において、既に支払った額に不足があるときは、その不足額に年一割の割合による支払期後の利息を付してこれを支払わなければならない。
If no agreement is reached between the parties regarding the decrease in the amount of land rent, etc., until the judicial decision establishing that the decrease of the amount is valid becomes final and binding, the party that has received the request may request payment of land rent, etc. in an amount that is found to be reasonable; provided, however, that when that judicial decision becomes final and binding, if the amount that has already been paid exceeds the amount of land rent, etc. considered to be valid, the amount of the excess must be returned with the addition of interest at the rate of ten percent per year from the time the payment was received.
地代等の減額について当事者間に協議が調わないときは、その請求を受けた者は、減額を正当とする裁判が確定するまでは、相当と認める額の地代等の支払を請求することができる。ただし、その裁判が確定した場合において、既に支払を受けた額が正当とされた地代等の額を超えるときは、その超過額に年一割の割合による受領の時からの利息を付してこれを返還しなければならない。