Atelier Chaloub Architectes (ACA) is a Montreal-based architecture firm founded in 1987 by Antoine Chaloub. The firm focuses on human-centric design and contextual integration, emphasizing the creation of harmonious living spaces that blend functionality with aesthetics. Since transitioning to its current name in 2015, ACA has been led by Mark Chaloub, who continues the family legacy while expanding the firm’s design philosophy.

ACA offers comprehensive architectural design services, including conceptualization, zoning changes, permit applications, and site supervision. The firm manages all stages of the project lifecycle, ensuring that architectural solutions harmonize with their surroundings. Their design portfolio features residential, commercial, and mixed-use projects, characterized by innovative spatial planning and sustainable integration with existing environments. ACA prioritizes collaboration and personalized solutions, catering to private clients, developers, and institutions seeking unique architectural experiences.