135 WAGRAM
A stone-clad office building on Avenue de Wagram, near Place du Brésil, hides a layered history of transformations.
Originally built in the late 19th century with a timber frame, it was raised in the 1950s–60s to seven stories. Today, it undergoes a major refurbishment and a new rooftop extension, driven by thermal obsolescence and evolving needs.
The street façade is preserved, insulated, and refined using Souppes limestone in contrasting finishes. Tall, elegant windows redefine the rhythm of the openings, while the entrance hall — once closed off — now opens generously onto the public space through full-height glazing and a light yet monumental steel gate.
At the rear, the brick extension is set back with subtlety. Its rounded corners, restrained palette, and orderly layout create continuity with the existing structure, while improving daylight access and spatial coherence.
Inside, floor plates are cleared, optimized, and extended with terraces, offering flexible, light-filled workspaces. In this dense urban context, the occupied-site construction required careful logistics and minimal disruption. Now certified BBC Effinergie Rénovation, the project brings new relevance and value to the building — combining architectural transformation with an ambitious energy strategy.
