[3][4][5] Additionally, he designed the Palais de l'université located on the Place de l'Université on the Rue Gaston de Saporta opposite the Cathédrale Saint-Sauveur in 1734, which formerly housed the law school and now houses Sciences Po Aix.
For example, in 1730, he designed the Hôtel du Poët for Henri Gautier (1676–1757), located at the very top of the Cours, and listed since 1987.
[8] Moreover, in 1757, he designed the facade of the Hôtel d'Esmivy de Moissac at the bottom of the Cours, listed since 1993.
[11] With his father, he also designed the Halle aux grains, another listed building since 1983, which was built from 1717 to 1759 and now houses a post office and a library.
[12] Vallon designed the Bastide du Jas de Bouffan on the outskirts of Aix for Gaspard Truphème circa 1750.