From a family with a long history of service to the French king, Le Pelletier de la Houssaye held several posts, including Intendant (representative of the royal power in the provinces), a post he held in Soissons (1694), at Montauban in Rouergue (1698 - 1700) and at Strasbourg in Alsace (1700 - 1715).
Under the Regency, the protection of d'Aguessau allowed him to enter the entourage of Philippe II, Duke of Orléans, whose properties he administered.
After the flight of John Law, he was named Controller-General of Finances on 12 December 1720.
In 1701, while Intendant of Alsace, Le Pelletier de la Houssaye issued a ruling permitting Jewish worship in clandestine synagogues in response to a complaint brought by an abbé.
There is no synagogue per se, only, by a custom long established in this province, when there are seven Jewish families in one locale, those who compose them assemble, without scandal, in a house of their sect for readings and prayers.