The construction of Itaca was executed using a new configuration of the Crane WASP system, featuring four robotic arms positioned at the vertices of a hexagonal structure. This setup enables the simultaneous printing of four wall sections, significantly accelerating the building process. When operating simultaneously, the four arms can complete the structural shell of a house in as little as a couple of days.

Inside the wall infills, a series of reinforcement columns were inserted to enhance structural integrity, ensure compliance with earthquake regulations, and support the load of the green roof to be installed above. To improve thermal regulation and energy efficiency, the walls have been designed with a significant thickness of 60 to 70 cm, and their infills were packed with rice husks sourced from waste produced by the agri-food supply chain and natural lime powder. This approach enables the creation of internal insulation rather than external, resulting in a passive energy house.

By combining the selected construction materials with natural insulating materials derived from industrial byproducts, the environmental impact of the walls is drastically reduced, to the point of achieving a negative CO₂ emissions balance. In regions where regulations allow, the same architectural module of Itaca can also be built using earth as a construction material, further contributing to the reduction of the building’s overall environmental impact.

Starting from the building itself, ventilated walls help regulate indoor temperatures, reducing energy requirements and lowering emissions from heating and cooling. The walls also feature radiant heating systems and electrical installations, which are embedded during the printing process, eliminating the need for post-construction intervention. This includes heating, electrical wiring, and insulation.