The 401 Saint-Paul occupies a pivotal position at the boundary between Old Quebec and the Saint-Roch neighbourhood, facing Place Jean-Pelletier and the Gare du Palais. Once home to the Château Champlain hotel and later to the organization Lauberivière, the vacant building was waiting to be reimagined.
The project combines the requalification of the original building, constructed in two phases in 1924 and 1927, with a new contemporary addition that consolidates the city block. The architectural expression of the extension deliberately steps back to foreground the heritage building, drawing inspiration from landmark ensembles such as the Château Frontenac and the Séminaire de Québec.
The project embraces an ambitious environmental approach. Steel recovered during selective deconstruction is recertified and reintegrated into the new construction, while a centralized geothermal system reduces energy needs by nearly 40%. The project targets BCZ-Design v4 certification.
Organized around two landscaped interior courtyards and green rooftop terraces, the 401 Saint-Paul extends the green corridor connecting upper and lower town, offering a quality living environment at the heart of Quebec's architectural heritage.