Odelsrett

The Odelsrett is an ancient Scandinavian allodial title which has survived in Norway as "odelsrett" and existed until recent times in Sweden as "bördsrätt".
The Norwegian law stipulates the right, when a farm is to be sold, of any member of the family, by the principle of primogeniture, to buy it, consistent with "Åsetesrett."
If the property is sold to a stranger, family members have the right within a specified period of time (which varies over history, but ten years can be considered typical of recent usage) to redeem it at the price paid, with the additional cost of the improvements.
If there is controversy, appraisers are appointed.
Later law modified this, so that an owner selling his farm may determine whether he renounces for himself and heirs this right.
It has been argued that this law served as a mainstay to the long-lasting agrarian culture in Norway.
History.
Arnfinn Kjelland provides a historical perspective: 
Allodial title did not exclusively serve to ensure that land merely stayed in a particular family. It also offered daughters some protection when their inheritance rights were threatened by male relatives. If the father sold the land to his male relatives in an effort to avoid the transfer of land from his family to the daughters who were closer in succession, the daughters had a right to buy it back from the male relatives.