Which Gaudí building was his last private residence design?

Casa Milà was Antoni Gaudí’s last private-residence design.

Built in Barcelona between 1906 and 1912, the building was commissioned by Pere Milà and Roser Segimón as both their home and a block of rental apartments. Its flowing limestone façade, twisting ironwork and sculptural roof made it one of Gaudí’s most unconventional works. The building is popularly called La Pedrera, meaning “the stone quarry,” a nickname inspired by its rough, quarry-like appearance.

Casa Milà is especially notable for its structural innovations. Its façade is largely self-supporting, allowing flexible interior floor plans, while the attic uses a series of catenary-style brick arches. The rooftop chimneys, stair exits and ventilation towers are designed as architectural sculptures.

A common mix-up is Casa Batlló, another famous Passeig de Gràcia project by Gaudí. Casa Batlló was remodeled earlier, from 1904 to 1906; Casa Milà was his final purpose-built private residence design.