This post, published on Éditions Yvon Blais’ blog on latent defects on May 24, 2018 (FR), discusses the judgment in Société en commandite de l’Avenir v. Familia Saint-Jérôme (Full Text | Fiche Quantum), in which, in 2017, the Court analyzed a claim for a reduction of an immovable’s sale price due to the soil’s contamination with oil on the basis of various guarantees, namely (i) the legal warranty of quality of section 1726 C.C.Q., (ii) the warranty against violations of public law restrictions of section 1725 C.C.Q., as well as (iii) the seller’s contractual warranty, his specific declaration to the buyer, at the time of the sale, that the immovable in question did not violate any environmental protection laws.