Leviticus 27:14-15 - Redemption Of Vowed Houses
14 " 'And if a man consecrates his house [as] a holy object for Yahweh, then the priest shall set a value on it, {either good or bad}; [just] as the priest sets a value on it, so it shall remain. 15 But if the one who consecrates [it] wants to redeem his house, then he shall add a fifth of your proper value's money onto it, and it shall be his.