JCA GCA is available for new projects

After several years working in Parisian architecture firms on large-scale operations and diverse programs, the founders, Julien CAMPAGNE and Gaëlle COLICHET, were committed to creating their own practice. Based in the Hauts-de-Seine area, the firm develops most of its projects in the Île-de-France region while also carrying out work in other regions and territorial contexts.

Since its creation, JCA GCA has primarily focused on the theme of housing, whether collective or individual. The firm quickly expanded its portfolio with residential projects for private clients (new constructions, extensions, rooftop additions, and renovations of houses and apartments), thereby enriching and complementing the founders’ respective experience in the design of public facilities.

• Julien CAMPAGNE graduated from the École Supérieure d'Architecture (DESA, 2000).

After beginning his career with the teams at Architecturestudio and Crochon Brullmann + Associés, he joined Marc Barani Architectes, where he worked as a project director for over 15 years. Known for his research-oriented and creative profile, and driven by a strong commitment to guiding projects through to completion, he has led numerous prestigious projects—from concept to delivery—and contributed to many award-winning competition entries.

In addition, projects such as the Auditorium of the Institut de France in Paris and the Prouvé Convention Center in Nancy—both designed in close dialogue with historic buildings—demonstrate his particular attention to heritage value and the harmonious integration of contemporary interventions within historical contexts.

• Gaëlle COLICHET graduated from the École Nationale Supérieure d'Architecture de Paris-Belleville (DE-HMONP, 2022) and from École Boulle (BTS in Spatial Design, 2017).

Her dual academic background reflects her interest in working across and connecting the different scales of an architectural project. Her skills in interior architecture and design quickly led her, while still a student, to work on shop design and competitions for cultural institutions such as the Palais de Tokyo in Paris. After earning her degree, she joined Marc Barani Architectes, where she oversaw design phases for complex projects, particularly mixed-use developments (collective housing, offices, sports facilities) as well as high-end residential and hospitality projects.

Do not hesitate to contact Julien CAMPAGNE and Gaëlle COLICHET for your projects!