Lev 27:15-20

15And if the one who consecrates the house wishes to redeem it, one-fifth shall be added to its assessed value, and it shall revert to the original owner.16If a person consecrates to the Lord any inherited landholding, its assessment shall be in accordance with its seed requirements: fifty shekels of silver to a homer of barley seed.17If the person consecrates the field as of the year of jubilee, that assessment shall stand;18but if the field is consecrated after the jubilee, the priest shall compute the price for it according to the years that remain until the year of jubilee, and the assessment shall be reduced.19And if the one who consecrates the field wishes to redeem it, then one-fifth shall be added to its assessed value, and it shall revert to the original owner;20but if the field is not redeemed, or if it has been sold to someone else, it shall no longer be redeemable.