South of Milan, between the disused warehouses and artists’ studios of Viale Ortles and the farmland of the Parco Agricolo Sud, an eight-hectare open site is set to become one of the city’s most significant urban transformation zones. Here, between Via Quaranta and Via Marco d’Agrate, the municipality plans to develop a new residential district—presented as one of Milan’s most sustainable.
The setting is the Parco Agricolo Sud Milano, a vast protected area of around 47,000 hectares that marks the southern boundary of the city’s urban expansion. The Vaiano Valle Nord plots fall just outside its official perimeter, yet they form a strategic threshold—the point where the built fabric gives way to the countryside.
It is precisely along this edge that the project takes shape. The masterplan—designed by Gerardo Ghioni and Simone Paradiso with the studio Archi-Tekton—envisions an integrated system of open spaces, pathways, and green areas woven into a new urban fabric of courtyard blocks and taller volumes. In this vision, the park is not an accessory, but the backbone of the entire development.
The site has been at the center of urban planning debates for more than a decade. Since the mid-2010s, Vaiano Valle has been identified as a key area for redefining the city’s southern edge, yet the project has undergone multiple revisions without ever reaching an operational phase. In recent weeks, however, a decisive step has been taken: the launch of the Strategic Environmental Assessment (SEA), a required process to evaluate its overall impact.
It is this delicate balance between construction and landscape that now raises the most critical questions. Development will not take place inside the park, but along its most vulnerable edge—enough to redefine it. Will the park truly act as the structural framework of the project, or will it simply accompany new residential growth?
Vaiano Valle remains one of the last places where Milan directly meets the countryside. For this reason, any transformation here carries significance beyond the local scale. On one hand, the project is seen as an opportunity to create a large, continuous, and accessible green system; on the other, concerns are growing that environmental priorities may ultimately be subordinated to new development.