On his return to France Laloux rose quickly through the academic system, serving on many juries, societies and foundations. As practitioner, he produced major commissions in a highly ornamented neo-classical surface style, collaborating with sculptors and muralists squarely in the
Beaux-Arts tradition, but doing so on innovative cast-iron frames. Metal framing allowed higher interior spaces, more generous fenestration, and glass roofs, notably in the sunlit barrel-vault of the Gare d'Orsay. Laloux was awarded the American
AIA Gold Medal in 1922, and the RIBA
Royal Gold Medal in 1929. In 1932, he was elected into the
National Academy of Design as an Honorary Corresponding Academician. In 1936, the year before his death, his successor as head of the
atelier was his own student,
Charles Lemaresquier. He died in Paris, aged 86. == Work ==