Located on the southern shore of Lake Rupanco in southern Chile, the 3C2C House is a single-family residence designed to blend seamlessly with its natural surroundings. The project is composed of three elongated volumes connected by two enclosed corridors—hence the name “3C2C” (3 Casas, 2 Conectores). This configuration preserves the openness of the site, framing lake and mountain views while reducing the building’s visual impact.

The first volume contains the double-height social area—including kitchen, dining, and living spaces—with large windows oriented toward the lake and the Andes. The second volume hosts the main bedrooms with views to northern pastures, protected by native vegetation. The third includes guest rooms, a secondary living space, and service areas. All volumes are connected by a gentle ramp and are surrounded by gardens and native landscaping.

Constructed almost entirely from wood and insulated with sheep’s wool, the house incorporates photovoltaic panels that generate 5,600 kWh per year and a greywater treatment system for irrigation. The project was co-designed with local craftspeople—who later formed the “Constructores de Rupanco” collective—under CITIC’s approach to participatory, regenerative design that bridges architecture, culture, and ecology.