Lyon, June 4, 2026 – A historic mansion situated at the corner of Rue Duquesne and Rue Garibaldi in Lyon’s 6th arrondissement is currently undergoing a complete and spectacular metamorphosis. The project, codenamed “Heritage 77,” refers to its address at 77 Rue Duquesne, and involves a full renovation and vertical extension of the building.
A Historic Building with a New Future
Constructed in 1922 on the site of a former bowling green, the mansion was acquired four years ago for 4 million euros by a Lyonnaise real estate company. The property, which previously belonged to the Kahn family-cofounders and owners of Galeries Lafayette-was managed as a rental property, primarily housing offices. The branch of Jacques Kahn oversaw its operations without residing there.
Before the current renovation, the three-story building was home to numerous architects, including Michel Maurice, Frédéric Bruneau, Jacques Pellet, Didier Noel Petit, and firms such as Nides, Studio Gardoni, Arche, and New Ground. Legal professionals and lawyers like Jean-Pierre Mounier, Jean Penin, Charles Savary, and Xavier Moroz also occupied the premises.
Ambitious Renovation and Extension Plans
The rehabilitation of this mansion is an ambitious and complex undertaking. The project has been developed in consultation with Laurence Croizier and Romain Billard, deputy mayors of the 6th arrondissement, to ensure its seamless integration into the historical environment of Boulevard des Belges. This boulevard is renowned for its 33 private mansions built during the construction of Parc de la Tête d’Or.
The building permit, filed on behalf of a Lyonnaise family real estate company, outlines a dual contemporary extension. This includes the addition of a rooftop villa, or ‘attic,’ and the infilling of the gap between the mansion and the adjacent building at 75 Rue Duquesne. Furthermore, a vegetated inner courtyard will be created, providing a green space at the heart of the project.
The transaction for the property was facilitated by the young trio from Vesta Group-Charles Loubier, Jules Gignoux, and Sébastien Truchot-who assisted both the tenant and the landlord.
Impact on Local Heritage and Economy
The “Heritage 77” project is expected to contribute to the economic dynamism of the 6th arrondissement while preserving and enhancing its architectural heritage. The careful consideration given to integrating modern extensions with the existing historical context reflects a commitment to sustainable urban development.
The Rue Duquesne, where the mansion is located, is an artery entirely traced on land belonging to the Hospices Civils de Lyon. The Kahn family, particularly Raymond Kahn, an administrator of the Hospices Civils, had a significant connection to this area, residing at 77 Rue Duquesne and La Vigie in Neuville sur Saône.
This renovation project highlights Lyon’s ongoing commitment to revitalizing its historic buildings while adapting them to contemporary needs. It also underscores the city’s appeal to investors interested in high-value real estate projects.
The transformation of this mansion is a testament to Lyon’s evolving urban landscape, balancing respect for its rich past with a vision for the future. The project is anticipated to be a significant architectural landmark in the 6th arrondissement.
