Leviticus 25:29-34 - Release Of Houses
29 "If a person sells a residential house in a walled city, he is to redeem it within the year in which it was sold. He may have right to its redemption for a full year. 30 But if it's not redeemed by the end of a full year, then the house next to which is a wall is to belong in perpetuity to the one who bought it throughout his generations. It is not to be returned in the jubilee. 31 However, the houses in the villages that don't have walls around them are to be categorized along with the fields of the land they may be redeemed and returned in the jubilee.
32 Nevertheless, the cities that belong to the descendants of Levi that is, the houses in the cities that belong to them are to belong to the descendants of Levi perpetually as part of their right of redemption. 33 If someone from the descendants of Levi redeems the houses in the cities that they own, they are to be returned in the jubilee, because the houses of the cities of the descendants of Levi are to remain their property among the Israelis. 34 Also, the open land of their cities is not to be sold, because it is to remain their perpetual inheritance."