The history of the Château de Biron starts with its construction in the 12th century, The castle then underwent various periods of improvement that continued until the 18th century, during which entire period it was owned by the Gontaut-Biron family (the family finally relinquished ownership in the 20th century, after 24 generations).
An active castle starting with the 13th century cathar wars the Chateau de Biron underwent an important transformation in the 15th century after the end of the Hundred Years War when it was made more comfortable with the addition of windows and many other enhancements, often in the renaissance style.
Troubled times were to return with the wars of religion in the 16th century, during which the Gontaut-Biron family were out of favour with the King. This situation continued until the 18th century, when the family were at last able to continue with their improvements to the castle.
With the revolution in France the castle again fell to neglect, and the family once again had to fight to keep and improve the Chateau de Biron. They retained the castle until 1978 when the family sold it to the state.