Located on Atlantic Forest, this vacation home offers an interesting laboratory for ecological practices in architecture, engineering, and landscaping. Preserved over 70% of its area, the site features a native forest that served as a guide for the project, occupying only the already degraded portion. The result is a "contemporary cabin" that redefines the relationship between architecture, landscape, sustainability, and new ways of living. The house is elevated from the ground and presents itself as a transparent pavilion, where the living areas function as a large veranda immersed in the treetops. Access is via a staircase that ends in an extended landing, converted into a suspended balcony and a viewing point. The floor plan prioritizes informality: bedrooms that open directly onto the living area, bunk beds integrated into the architecture, and a suite that focuses on the landscape as the protagonist. Construction can be divided into two distinct phases. The basement, which includes retaining walls, a laundry room, storage, solarium, and swimming pool, was built using traditional masonry, exposed concrete, and rough stone techniques.

The main pavilion was designed with industrialized and prefabricated systems, such as glued laminated timber (GLULAM) beams, nailed laminated timber (NLT) slabs, and light steel framing walls. This strategy combines construction precision, sustainability, and lightness, establishing a direct dialogue between architecture and nature. Materiality is the central axis of the project. Inside, the highlights include the exposed wood slab, the polished concrete floor, the carbonized pine paneling using the Japanese shou sugi ban technique, and the reclaimed peroba rosa wood on the countertop. Externally, Brazilian limestone clads the swimming pool, integrating leisure and landscape. At night, the residence takes on a different identity. The lighting design transforms the volume into a suspended wooden box, inverting the hierarchy between architecture and forest. During the day, the forest softens the house's presence; at night, the building takes center stage, highlighting the multiple roles of architecture and its relationship with its surroundings. For Cornetta Arquitetura, Casa Guapuruvus epitomizes the idea of ​​best practices applied to architecture. Every choice, from the implementation to the construction solutions, reinforces the notion that sustainability is not an appearance, but a process.