 In 1786, Lanaudière was named to the Legislative Council of Quebec and, in 1792, to the Legislative Council of Lower Canada.He also served as overseer of highways and superintendent of postal services.From his mother, he inherited land in the seigneury of Lac-Maskinongé (also known as Lanaudière) and, from his father, the seigneury of Sainte-Anne De La Pérade.