h2o architectes is a firm specialized in architectural, heritage and urban design and reconfiguration. It develops a variety of programs on different scales: housing, public spaces, new neighborhoods, work and educational environments, and cultural facilities.

h2o architectes was founded in 2005 by Charlotte and Jean-Jacques Hubert. Antoine Santiard joined as a partner in 2008. In 2016, the three partners created Eugène Architectes du Patrimoine to address the challenges of restoring Heritage status buildings.

Faced with the complexity of the contexts addressed and their heritage or social characters, the firm has built an agile approach, capable of resolving situations in unique ways, through concerted action. Projects are designed to be open-ended, in a finely balanced dialogue with the history of the site, systematically questioned and always enriched.

Initial programs are questioned with the goal of transcending the initial commission and creating renewed sites that can be freely appropriated by their users. More than just spaces, h2o architectes constructs places to be enjoyed and experienced.


2023 Equerre d’Argent prize

h2o architectes won the 2023 Equerre d’Argent prize, France’s highest honor for an architectural project.
This project for the Saint-Germain neighborhood in central Paris, carried out for RIVP and delivered in collaboration with the firm François Brugel Architectes Associés, also includes a gymnasium and daycare designed by Antoine Regnault Architecture. The courtyard and roof gardens are designed by E&M Hennebicque landscape designer.



Europe 40 Under 40

h2o architectes est lauréat du Prix ‘’Europe 40 Under 40’’ année 2014. Distinction Européenne
décernée par The Chicago Athenaeum: Museum of Architecture and Design et The European
Centre for Architecture, Art Design and Urban Studies à une sélection de 40 architectes
européens de moins de 40 ans.




Wallpaper* architects directory

h2o architectes listed on the Wallpaper* architects directory 2009, a selection of 30 young international emerging practices.




Lauréat des nouveaux albums des jeunes architectes et paysagistes 2009

L’agence est lauréate des nouveaux albums des jeunes architectes et paysagistes, un prix du
Ministère de la culture et de la communication récompensant les jeunes architectes, et destiné à
les encourager dans la suite de leur activité.