Paris Courthouse
Since the Middle Ages, Parisian justice has been administered from the iconic building surrounding the Sainte-Chapelle on the Île de la Cité. Over time, a growing lack of space forced many offices to relocate to various sites across the city. The newly constructed Paris Law Courts near Porte de Clichy have resolved this issue by uniting courtrooms and offices under one roof. Meanwhile, the historic Île de la Cité location remains dedicated to key and symbolic functions, including the Cour des Assises, the Court of Appeals, and the Supreme Court.

An innovative solution that responds to the city and to the institution’s objectives
When the competition was announced, the French government initially proposed separating the law courts into two buildings: one for public functions such as courtrooms and another for offices. However, we instead envisioned a unified structure, bringing all spaces together under one roof. This concept aimed to create a single, cohesive building that, through its scale and prominence, could serve as a catalyst for the rehabilitation and redevelopment of the Porte de Clichy neighborhood.
The courthouse is situated on an L-shaped site between the city’s ring road and Martin Luther King Park. Its axis aligns with the park's north-south diagonal, anchoring it within the Clichy–Batignolles urban development zone. The building’s southern façade opens toward Paris, while the northern side faces Clichy. A "visual corridor" extends the park’s diagonal line northward, flowing between the courthouse's east façade and the Maison des Avocats, the headquarters of the Paris Bar Association.





A stepped highrise that provides generous common spaces and natural light
The new Paris law courts, rising 160 meters, span 110,000 square meters and serve up to 8,800 daily visitors. The structure features a Pedestal, integrating with the lower part of the Tower, and three stacked parallelepipeds that form the Tower above. Each block steps back slightly, creating a striking, tiered profile that sets it apart from conventional towers in Paris. Fully glazed façades on all three blocks enhance lightness and transparency, while east and west glass "frames" extend outward, offering views of Montmartre and the Eiffel Tower. The narrower north and south façades overlook central Paris, Clichy, and Mont-Valérien.
Visitors enter through the forecourt, marked by a canopy, vertical fissure, and French flag, into the Public Lobby. The centerpiece of this space is the Great Atrium, a 28-meter-tall rectangular hall filled with natural light from skylights, called “the Marilyns,” and a glazed forecourt-facing façade. Two smaller atriums to the north and south, of equal height, connect via a 160-meter-long corridor spanning the Pedestal’s ground floor. The lobby’s design emphasizes grandeur and openness, with slender steel columns, bright white finishes, and natural light. Wooden panels add warmth and sophistication, ensuring a welcoming atmosphere. Together, these features make the law courts a landmark of functionality, modernity, and architectural finesse in the heart of Paris.





An architecture that reflects the institution's modernization
The Paris law courts provide seamless access to 90 courtrooms, a public cafeteria, and key information services directly from the lobby. Each courtroom is finished with parquet and steamed-beech-wood paneling, with natural light streaming in through the façades. Behind the courtrooms, council chambers and deliberation rooms, also designed with warm wood finishes, are visible through the glazed exterior. On the eighth floor, a 7,000-square-meter planted terrace hosts a staff restaurant and a tranquil green space for reflection and interaction. Two raised gardens on the 19th and 29th floors further integrate nature into the building, extending the Martin Luther King park vertically.
Sustainability is central to the building, featuring horizontal and vertical photovoltaic panels that highlight a commitment to alternative energy. The courthouse meets Paris Climate Plan targets, adhering to stringent thermal regulations and pursuing HQE certification for environmental excellence. Designed for adaptability, the building’s robust and orthogonal structure ensures it can evolve to meet future judicial needs while continuing to integrate energy efficiency and flexibility in public architecture.






Project Details
Status
Client
Établissement Public du Palais de Justice de Paris + Bouygues Bâtiment
Design
Renzo Piano Building Workshop, architects
Environmental Certifications
HQE Exceptionnel (2021)
Environmental certifications
2021 HQE Exceptionnel
Awards
Competition (2010-2011)
Design Team
B.Plattner (partner in charge), J.B.Mothes, D.Rat with B.Akkerhuis, M.Angelozzi, L.Bot, N.Byrelid, S.Cloarec, S.Crabot, J.Franco, F.Garrigues-Cortina, S.Giorgio-Marrano, L.Le Roy, J.Moolhuijzen (partner), P.Pires da Fonte, B.Schelstraete; O.Aubert, C.Colson, Y.Kyrkos, Y.Chaplain (models)
Consultants
SETEC Bâtiment, Berim (MEP); SETEC TPI (structure); Eléments Ingénieries (sustainability); RFR (façades); Movveo (vertical transportation); Majorelle (interior design, space planning)
Design Development (2012-2017)
Design Team
B.Plattner (partner in charge), S.Giorgio-Marrano, J.B.Mothes, D.Rat (associates in charge), G.Chung, S.Cloarec, B.Granet, A.Greig, C.Guézet, A.Karcher, M.Sismondini with N.Aureau, G.Avventi, A.Belvedere (partner), A.Bercier, F.Bolle, L.Bot, A.Boucsein, N.Byrelid, J.Chevreux, S.Crabot, J.Franco, N.Grawitz, B.Guimaraes, V.Houeiss, N.Maes, J.Sobreiro, S.Stevens, M.van der Staay and T.Heltzel, M.Matthews ; O.Aubert, C.Colson, Y.Kyrkos, Y.Chaplain (models)
Consultants
SETEC Bâtiment, Berim (MEP); SETEC TPI (structure); ELAN (sustainability); RFR (façades); Movveo (vertical transportation); Lamoureux (acoustics); M.Harlé/J.Cottencin (signage); Cosil Peutz (lighting); C.Guinaudeau, AIA Ingénierie (planting); Majorelle (interior design, space planning); Ecotec (specification consultant); Studio Akkerhuis (consulting architect)