The project converts a brownfield site into a new 32-unit residential complex, reconfiguring the relationship between collective space and the city
The S. Ambrogio Housing Cooperative in Milan successfully integrates architectural quality, social engagement, and contextual sensitivity. The 32-unit building was commissioned by a local labor federation’s housing cooperative. Occupying a former brownfield site, the structure completes the street wall between Via Savona and Via Bruzzesi in the Giambellino district.
Designed by Milan firm B22, the project is conceived as an active component of the urban fabric. The facade establishes a strong public presence by articulating the intersection of Via Savona and Via Bruzzesi, while responding to the varying heights and architectural styles of the surrounding buildings.

Inside, permeability between private and collective spaces centers on the entrance lobby, which acts as a link between two common spaces. Designed for both residents and neighborhood activities, these spaces reflect the project’s inclusive program. A straightforward circulation system – featuring exposed concrete stairs that lead to the upper floors and rooftop terrace – reinforces the communal focus.
The apartments – ranging from one- to three-bedroom units and penthouses – are one of the project’s most innovative features. Their layouts stem from a participatory process involving town halls and workshops with future residents. By recognizing that domestic life is dynamic, this approach produced a flexible composition designed to adapt over time to the residents’ needs.
Externally, a metal framework organizes the large balconies, designed as outdoor extensions of the living areas. Vertical elements of varying widths form a grid that aligns with the Via Savona frontage before transitioning into a series of flag-hinged surfaces along Via Bruzzesi. This progression creates a dynamic facade, accentuated by the balconies’ gradual setback on the upper floors to balance overhead light with the depth of the openings.
Two underground levels house the building’s mechanical systems and a private parking garage for approximately 30 cars, clearing the surface level to improve the quality of the urban environment.
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Location: Milan, Italy
Client: Cooperativa S. Ambrogio, Consorzio Cooperative Lavoratori
Architect: B22 in team with T:21
Design Team: Stefano Tropea with Federica Vassena, Alfredo Barba, Simone Marcolin (B22); Walter Besozzi, Ruggero Rognoni (T:21)
Construction Project Manager: Marinella Nidasio (Consorzio Cooperative Lavoratori)
Main Contractor: Cooperativa Muratori “La Solidarietà” Gussola (C.M.G.)
Consultants
Structural: Federico Mazzola
MEP: Studio Poletti, Elco Sas
Curtains: Tempotest Parà
Façade - Insulation and Plaster: Röfix
Photography: Francesca Iovene and Filippo Romano, courtesy of B22
Cover image: © Francesca Iovene