Architectural transition

This theme explores the sustainability issues raised by the Anthropocene at the scale of buildings and urban environments, in all their material aspects, from design and construction to the uses to which they are put.

  • Bobigny
  • 2026
  • Work in progress
  • Bobigny
  • 2026
  • Work in progress
Bobigny Courthouse

PCA-STREAM has won the competition for the extension of the Bobigny courthouse by designing a building with a balanced monumentality, reaffirming without excessive theatricality the sacredness of justice. The new courthouse will offer a functional and exemplary building, embodying the idea of a justice of care.

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  • Paris
  • 2023
  • Work in progress
  • Paris
  • 2023
  • Work in progress
Grande Armée

At the initiative of the Comité Grande-Armée, PCA-STREAM delivers "Grande-Armée 2030", a strategic vision for reintegrating the Avenue de la Grande-Armée into the urban dynamic of Paris's historic thoroughfare and adapting it to the challenges of the 21st century city.

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  • Paris
  • 2023
  • Delivered
  • Paris
  • 2023
  • Delivered
Stream Building

Covivio, Hines France, and PCA-STREAM have come together to create the Stream Building, a manifesto building located at the heart of the new Clichy-Batignolles district that integrates almost fifteen years of research by Stream Lab into innovations addressing the key challenges facing the cities of tomorrow. Circular by design, the Stream Building is a relational and productive hub that will energize this new urban center within the Greater Paris area by concentrating all the activities associated with a vibrant urban life.

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Podcast

“ How are territories coping with reduced energy capacity? ”

Downscaling Energy

Labex Futurs Urbains

Podcast

“ How are territories coping with reduced energy capacity? ”


Downscaling Energy

How are territories coping with reduced energy capacity? Five researchers presented their work at the Downscaling Energy study day organized at the agency by the Labex Futurs Urbains’ City and Energy working group. Research topics included Beirut, the impact of Hurricane Irma on the French island of Saint-Denis, resource management in the Middle Ages, the 1973 oil crash and the current environmental crisis.

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  • Paris
  • 2020
  • Delivered
  • Paris
  • 2020
  • Delivered
175 Haussmann

The restructuring of 175 Boulevard Haussmann is an opportunity to become involved in making Paris a resilient and innovative city, one that is capable of renewing and reinventing itself. PCA-STREAM brings together two separate buildings to create a coherent office complex geared toward the well-being of its users and collaborative work. An emblematic contemporary rooftop addition, characterized by its glass scales, acts as a practical and symbolical connector between the various buildings and architectural periods involved.

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Vidéo
Vidéo

Displaced villages, uprooted populations

Moussa Belkacem is a PhD candidate in architecture at the OCS (Observatory of the Suburban Condition) laboratory of the Paris-Est Architecture, Cities & Territories School. His work focuses on the displacement of villages in Europe between 1945 and 2045. He examines projects to relocate urban areas that are bound to be destroyed, and stresses the need to consider the links between demolition and reconstruction, in order to better accompany these uprootings.

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  • Paris
  • 2018
  • Delivered
  • Paris
  • 2018
  • Delivered
15 Laborde

Located near the Saint-Lazare train station, these new-generation offices in a former military barracks combine the best of two architectural heritages. They offer a comfortable and prestigious workplace, turned towards nature and the well-being of its users, French law firm Gide-Loyrette-Nouel. The building's heritage is magnified and remodeled, enhancing its attractiveness and competitiveness, while helping to write a new page in the history of Paris's ever-changing urban fabric.

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  • Paris
  • 2019
  • Delivered
  • Paris
  • 2019
  • Delivered
52 Champs-Élysées

PCA-STREAM’s restructuring of 52 Champs-Élysées, the former Virgin Megastore, contributes to renewing the image and attractiveness of the Champs-Élysées. The imposing Streamline Modern Art Deco building gains new coherence thanks to a magnification of its architectural style and a clarification of its program. It will host a Galeries Lafayette department store, high-end offices, and an exceptional garden restaurant overlooking Paris.

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  • Paris
  • 2024
  • Work in progress
  • Paris
  • 2024
  • Work in progress
32-34 Marbeuf

In the heart of the Golden Triangle district, at 32–34 Rue Marbeuf, PCA-STREAM is reinventing the iconic Citroën dealership from the 1930s for Gecina, restored to its former glory with rejuvenated original architecture, innovative workspaces, and a full-fledged hanging garden on terraces that open out onto Paris.

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  • Paris
  • 2026
  • Work in progress
  • Paris
  • 2026
  • Work in progress
Bonne Nouvelle

At the heart of the Silicon Sentier, in the 10th arrondissement of Paris, PCA-STREAM is restructuring an imposing postal building from the 1950s following an ambitious approach both in terms of heritage and the environment. Adaptive reuse has enabled the building to now offer flexible, comfortable, and innovative spaces, complemented by high-end services, as well as exceptional outdoor spaces.

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  • Paris
  • 2020
  • Delivered
  • Paris
  • 2020
  • Delivered
15-25 Amiral Bruix

In the heart of the revitalized Porte Maillot district, PCA-STREAM revisits the Parisian modernist heritage and extends the city-nature dialogue. The agency’s intervention respects and enhances the architectural qualities of the original structure. On the north side, the façade grid is reinterpreted in a contemporary style inspired by its original rigorous layout. Designed as a balcony overlooking the Bois de Boulogne, it highlights the exceptional linear nature of the building with unobstructed views of the greater Parisian panorama.The new headquarters of Murex, the world leader in software for the financial markets, was designed above all to maximize interaction and collective intelligence, an essential function of a head office that has been reinforced by the health crisis. Spaces are streamlined and legible, and fluid circulation is ensured by a core of elevators and Chambord staircases on the first day. Employees meet and exchange ideas in a place conducive to informal dialogue.

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Vidéo

Hervé Bougon

Vidéo

Spotlight on the city

Hervé Bougon is a film programmer and co-founder of Close-Up, a film festival dedicated to architecture, cities and landscapes. Close Up uses fiction to question the way we live, and year after year continues its work of discovering and raising awareness of major urban issues by bringing to the screen representations of urban architectural culture.

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Vidéo
Vidéo

STREAM : a research opus founded 14 years ago

Stream is a transdisciplinary magazine founded by Philippe Chiambaretta in 2009. By bringing together philosophers, sociologists, artists, engineers, biologists, economists and architects, it crystallizes a kaleidoscopic, forward-looking vision of the urban issues it tackles. It’s a way of doing research, by confronting expertise, at the crossroads of knowledge!

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  • Ivry-sur-Seine
  • 2024
  • Work in progress
  • Ivry-sur-Seine
  • 2024
  • Work in progress
Ivry Confluences

With Ivry Confluences, located in a changing urban landscape featuring brownfield sites and eco-districts, PCA-STREAM is designing a symbol of the revitalization of the south end of Ivry-sur-Seine. In dialogue with the local industrial heritage, the studio reinterprets the morphology of railway halls to develop a new complex with exacting environmental standards. An exemplar of next-generation offices, Ivry Confluences takes an active part in adding to the vibrancy and diversity of the district thanks to its active base and an extensive garden that opens onto the city.

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Vidéo
Vidéo

Applying a research approach in an architectural practice

Etienne Riot, urban planning researcher, and Pauline Detavernier, architecture researcher, are at the heart of applied research and innovation at PCA-STREAM. Together, they talk about the different facets of this research, from a CIFRE contract, to the setting up of a university chair project, to the subjects explored by the collaborators.

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  • Pré-Saint-Gervais
  • 2018
  • Delivered
  • Pré-Saint-Gervais
  • 2018
  • Delivered
Canopy

The Canopy project in Pré-Saint-Gervais is a rehabilitation of a brownfield site in the inner suburbs of Paris that offers next-generation work spaces. This project was first conceived by PCA-STREAM in 2005 but took more than ten years to come into being. The original proposal, which was to transform a former industrial hall in a open plan of atypical and innovative offices for creative businesses, has weathered the subprime mortgage crisis is finally materializing now that a new vision of the workspace has gained in acceptance.

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Vidéo

Bertrand Julien-Laferrière

Vidéo

The client and the architect

Bertrand Julien-Laferrière, former CIO of the Société Foncière Lyonnaise, collaborated with PCA-STREAM on the design of #cloud.paris. This building, located in the heart of Paris, combines work spaces that coincides with the aspirations of the creative classes and the employees of high value-added industries, which are turning away from the single-use business centers of the periphery. As part of the documentary “PCA-STREAM: From research to action”, we asked him to reconsider the development of this project. Here, he goes into more detail about the relationship between the client and the architect in the French context.

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Vidéo
Vidéo

An overview of architectural research

In 2017, on the occasion of the Lyon Biennale d’Architecture “Processus & Pratiques”, Jean-Louis Cohen, architect, architectural historian and professor at the Collège de France, reviewed the evolution of architectural research from the early 20th century to the present day, when the profession is being redefined by the acquisition of an analytical as well as a project-based function.

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  • Paris
  • 2022
  • Delivered
  • Paris
  • 2022
  • Delivered
Paris Centre police headquarters

The merger of the four central arrondissements of the French capital, the beating heart of Parisian culture, is embodied in the new administrative hub set up around Square du Temple, with the Paris Centre Town Hall and Police Precinct. PCA-STREAM is adapting, restoring, and revitalizing the Hôtel de la Garantie, a heritage complex from the 1920s, in order to accommodate almost 600 police officers under new, enhanced working conditions.

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Vidéo
Vidéo

Piloting the "City-Metabolism" Chair

Périg Pitrou is an anthropologist, CNRS Research Director at the Maison Française d’Oxford and head of the “Anthropology of Life” team at the Collège de France. He is Scientific Director of the City-Metabolism Chair, which links the agency with PSL University (Paris Sciences et Lettres). The aim: to identify how interdisciplinary collaborations can help overcome the challenges of building future urban worlds.

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  • Paris
  • 2009
  • Delivered
  • Paris
  • 2009
  • Delivered
103 Grenelle

The former headquarters of the Telegraph, in the 7th arrondissement of Paris, offered an exceptional building whose image had been gradually degraded by its successive occupants. PCA-STREAM revamped the site and reinvigorated this heritage property through the installation of new workspaces. An in situ artistic creation also reactivates its intimate links with the history of French telecommunications.

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Vidéo

Stanislas Chaillou

Vidéo

Harnessing AI as an architect

The researcher and data scientist explores and experiments with how architects can use artificial intelligence to enhance their practice. A foretaste of the AI & Creation conference series, for which he will host the fourth session (11/20/23), accompanied by American architects Daniel Bolojan and Andrew Witt.

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Podcast

“ Building cities, deconstructing methods. ”

Podcast

“ Building cities, deconstructing methods. ”


Building cities, deconstructing methods

Through the act of building, architect, experimenter and 2019 Grand Prix de l’urbanisme Patrick Bouchain questions public commissioning and puts it to the test of reality. His comments echo those of Philippe Chiambaretta in Faire la ville autrement, recently published by Flammarion.

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Article
Article

Defining the "Metabolic City"

Léone-Alix Mazaud, a CIFRE doctoral student (PCA-STREAM / École des Mines), here repositioned our definition of the “metabolic city” within a history of approaches to urban “metabolism”; a long-standing metaphor used in the study of urban systems, yet one that has been reconfigured over time.

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stream voices

Eager to share more generously the results of its collaborations and research, PCA-STREAM publishes STREAM VOICES, its online magazine!

Discover Stream Voices