Located in the south-east area of Milan, The Sign Edificio D houses the new headquarters of L’Oréal Italia within the wider The Sign Business District. Extending across approximately 13,000 square metres over nine above-ground floors, the building is conceived as part of a larger urban regeneration framework. Its sustainability agenda operates at several levels: through the continuity it establishes with the public realm, the environmental performance embedded in its envelope, and the wider ecological strategy of the district in which it sits.

Rather than presenting itself as an isolated object, Progetto CMR organised the building around the principle of connectivity. This is visible in both its spatial planning and its urban role, where movement, access, and environmental quality are treated as interdependent concerns. In this sense, the project aligns workplace architecture with broader questions of walkability, permeability, and public life.

Connectivity as urban infrastructure
A defining feature of the project is the ground-floor passage that cuts through the base of the building, linking the two squares of the district and reinforcing the continuity of the public realm. This through-route does more than provide access: it helps stitch together the masterplan, supports pedestrian movement, and makes the building part of an open urban sequence rather than a closed corporate enclave.

A linear lighting feature traces this route across the sequence of open spaces, giving legibility to movement while visually unifying the different plots within the district. The result is an architecture that contributes to wayfinding and public continuity at the scale of the neighbourhood. In sustainability terms, this emphasis on walkable connections and accessible open space improves everyday usability, reduces spatial fragmentation, and encourages low-impact urban mobility.

Façade performance and daylight modulation
The architectural identity of Edificio D is defined by a continuous curtain wall system organised in an alternating glass-solid rhythm. This façade strategy balances transparency with enclosure, allowing daylight into the interior while maintaining a controlled external expression. Rather than relying on uninterrupted glazing, the composition introduces a pattern that can help moderate solar exposure and reduce visual uniformity.
The inclusion of iridescent metallic panels gives the façade material depth while contributing to daylight modulation. These panels catch and reflect changing light conditions, adding texture and variation across the surface of the building. Their role is not purely aesthetic: by shaping how light interacts with the envelope, they help produce a façade that is both visually responsive and environmentally calibrated.

At the fourth and eighth levels, terraces are carved into the otherwise compact volume. These recessed outdoor spaces establish a more direct relationship between the workplace and the surrounding urban landscape, offering opportunities for visual relief, external occupation, and a less sealed internal environment. In doing so, they interrupt the mass of the building and introduce moments of openness within a dense business district setting.

Certification, performance, and digital resilience
The building is designed to achieve LEED Platinum certification, signalling a high level of performance across categories such as energy, water, materials, and indoor environmental quality. This positions the project within an internationally recognised framework for sustainable building assessment and indicates that environmental performance has been considered in a comprehensive and measurable way.

Edificio D has been awarded WiredScore Platinum, confirming the quality of its digital infrastructure and connectivity standards. While often discussed separately from sustainability, digital resilience is increasingly relevant to contemporary office performance. Reliable digital systems support flexible working, building management, and long-term adaptability, all of which contribute to the durability and future-readiness of workplace environments.

Biodiversity within urban regeneration
The wider The Sign development is the first urban regeneration project in Italy certified under the BiodiverCity label. This expands the environmental agenda beyond the building envelope to include ecological value at the scale of the landscape. Biodiversity strategies within the district include native planting, pollinator habitats, and publicly accessible green areas, integrating ecological performance into the public realm rather than limiting it to ornamental landscaping.