Cussac Architectes et Associés, based in Paris, is a mid-sized French architecture practice led by Gérard de Cussac and, since 2021, Chloé Tallis. For over 35 years, the firm has specialized in collective housing, social projects, and urban renewal, primarily in the Île-de-France region. The studio claims to have delivered approximately 15,000 housing units, with a portfolio that spans projects of various scales and typologies—ranging from 46 to 165 apartments per project, as well as student residences, intergenerational housing, and mixed-use buildings integrating commerce or community services. Recent and ongoing projects include a 62-unit social housing block in Rueil-Malmaison, a 152-bed student residence in Colombes, and an 81-unit housing/commercial complex in Antony. The organization maintains a multidisciplinary internal structure, with separate poles for conception, construction, and a dedicated director per project, aimed at ensuring quality and client oversight from design to handover.
In 2023, Cussac Architectes et Associés expanded its scope by launching CTWA (Cussac Tallis Wagner Architectes), a subsidiary focused on building rehabilitation, reflecting growing demand for the transformation and hybrid use of existing structures. The firm emphasizes process-based project management and incremental team growth, with about 30 collaborators currently. Although publicity highlights ecological sobriety and social responsibility, the practice’s core activities remain rooted in pragmatic urban interventions—extensions, renovations, and new-build housing—for both private and public clients. While the organization’s website details its operational methods and project examples, there is no independent, verifiable third-party documentation of its full history or output. Information here is drawn exclusively from the agency’s official publication.