Leviticus 27:15

If the man who dedicates his house redeems it, he must add a fifth to its value, and the house will again become his.

(New International Version)

'Yet if the one who consecrates it should wish to redeem his house, then he shall add one-fifth of your valuation price to it, so that it may be his.

(New American Standard Bible)

And if he that sanctified it will redeem his house, then he shall add the fifth part of the money of thy estimation unto it, and it shall be his.

(King James Version)