Smart, site-responsive design that responds to local climate without sacrificing style is at the heart of the Folding House in Las Cabras, Chile. Perched on a sharply sloped lot with only a small flat area, this modest, budget-conscious residence was designed by B+V Arquitectos to work with the landscape and the sun rather than against them. The 896.5-square-meter home sits on an elevated artificial platform and looks out toward Lake Rapel, pairing compact, well-proportioned interior spaces with generous views and a strong indoor-outdoor connection.
The home’s defining gesture is its folded roof plane. This angled roof creates a shaded eave and an open recreational area that effectively cools the house during hot summer days. The fold functions as a passive shading device: the roof flap and its continuous eave provide a sheltered transition between interior and exterior while allowing breezes to pass through freely. Linked directly to the main outdoor deck, the shaded area becomes a comfortable extension of the living space, perfect for informal gatherings and relaxing without direct sun exposure.
To further control temperature and improve comfort, the façade uses a double-ventilated wooden cladding system. This layered timber envelope enhances insulation and reduces heat gain, while the predominantly wood interior fosters a warm, cohesive aesthetic throughout the home. Public areas are bright and inviting, with practical layouts that prioritize natural light and views. Private bedrooms remain cozy and efficient, some with simple loft solutions that make the most of vertical space in a compact plan.
Although the project was designed on a limited budget, careful detailing and passive strategies reduce dependence on mechanical systems. The architects focused on high levels of insulation and eliminating thermal bridges in the building envelope. That deliberate approach means that the small wood-burning stove is only necessary on cloudy or especially cold days, while in warmer months the folding roof and ventilated façade keep interiors comfortable without heavy air conditioning.
During the cold season, the main eaves allow the entrance of radiation to the interior, which combined with high levels of insulation and elimination of all possible thermal bridges in the envelope, allows the small wood stove to be needed only during cloudy days.
The outdoor spaces emphasize simplicity and material continuity. Rustic wooden decks and terraces step down from the house and offer uninterrupted outlooks toward the landscape and the distant lake. Slatted screens and pergola-like elements give filtered light to the outdoor dining spaces, creating comfortable zones for meals and socializing in almost any season. The house’s dark and light timber elements on the exterior add visual texture while reinforcing the natural, low-key character of the design.
Folding House is a clear example of how thoughtful architecture can achieve comfort, beautiful views, and sustainability within a modest budget. By combining a distinctive folded roof, ventilated timber façades, careful insulation, and efficient spatial planning, B+V Arquitectos created a home that feels larger than its footprint and integrates seamlessly with its steep, scenic site.
Photography: Rodolfo Lagos Berardi
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