If he who dedicated it wants to redeem his house, then he must add one-fifth of the money of your valuation to it, and it shall be his.
Leviticus 27:15
Surrounding context
27:14 "And when a man dedicates his house to be holy to the LORD, then the priest shall set a value for it, whether it is good or bad; as the priest values it, so it shall stand.
27:15 If he who dedicated it wants to redeem his house, then he must add one-fifth of the money of your valuation to it, and it shall be his.
27:16 "If a man dedicates to the LORD part of a field of his possession, then your valuation shall be according to the seed for it. A homer of barley seed shall be valued at fifty shekels of silver.