In the case, considered by the Supreme Administrative Court (Conseil d'État), a couple owned several plots of land in Saint-Forget (Yvelines), separated from a municipal road by a wall built in the early 20th century.
Following the partial collapse of the wall and the subsequent subsidence of the road, the mayor issued a dangerous structure order, requiring the owners to carry out the necessary work to reinforce the wall. The cause of the collapse of the wall was not considered in court.
