During the French Revolution, Chantilly became a commune whose which boundaries matched those of the parish. The first mayor was the administrator of the estate, André-Joseph Antheaume de Surval. The other city council members were recruited from among the château officials. The Condés were among the first to flee abroad, just days after the fall of the Bastille, on 17 July 1789. The estate was sequestered on 13 June 1792 following the law on émigrés, and subsequently subdivided and sold.