His notable students there include Emmanuel Masqueray and Ferdinand Dutert.
In 1881, he was elected to the Académie des Beaux-Arts, where he took Seat #3 for architecture, succeeding Hector-Martin Lefuel (deceased).
Between 1867 and 1876, together with Gustave Eiffel and Eugène Bonté, he worked on rebuilding the church of Notre-Dame-des-Champs, which had been destroyed during the Revolution.
In 1878, he was commissioned by Maria Brignole Sale De Ferrari to build the Ferrari Hospice [fr] for retired domestic workers, in Clamart, a project which occupied him for ten years.
Shortly after, she also commissioned him to design the Palais Galliera and supervise its construction, which would occupy him until 1894.