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Rainwater Harmony Within Cork and Terracotta Retreat

Authors:
Felix Kruthaup, Eduarda Poubel, Muriel Lippert
Rainwater Harmony Within Cork and Terracotta Retreat
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Utilizing cork walls and terracotta tiles for effective rainwater management, the design creates a sustainable retreat that emphasizes solitude and connection with nature.
5 key facts about this project
01
Utilizes tree screws to anchor the structure while minimizing damage to surrounding flora.
02
Incorporates a mulch basin for effective greywater treatment within the landscape.
03
Features a back-ventilated roof design that regulates indoor climate naturally.
04
Walls made from solid cork enhance thermal insulation and provide acoustic privacy.
05
Includes an impluvium for rainwater collection, seamlessly integrating sustainability into the design.

O CANTO DAS LÁGRIMAS forms a quiet retreat that highlights the relationship between built space and nature. Located among greenery, the structure provides a space for reflection and connection. The design concept centers on creating a place that works with its surroundings, encouraging both social interaction and personal solitude in a natural setting.

Concept and Spatial Organization

The concept focuses on offering a retreat that promotes a thoughtful engagement with the environment. Spaces are laid out to support both social gatherings and moments of solitude. The design allows occupants to interact with the landscape, making use of sensory elements like the sound of rainwater falling on the structure. This sound enhances the experience of being in nature, adding depth to everyday activities.

Materiality

Materials were selected for their environmental qualities and their ability to blend with the landscape. The walls are made from solid cork, which provides insulation while ensuring a sense of privacy. This choice reflects a dedication to low-impact living and keeps a connection to the outdoors. Terracotta tiles line the impluvium, helping collect water and showcasing local craftsmanship.

Climate Control and Structural Elevation

The roof design features ventilation and insulation that regulate temperature throughout the year. This helps ensure comfort while reducing energy use. The building is elevated above the ground using a wooden beam, which limits disruption to the natural environment and provides clear views of the surroundings. Tree screws anchor the structure, ensuring minimal damage to nearby plants and allowing them to grow without hindrance.

Water Management Systems

Effective water management is a key feature of the design. A mulch basin blends with the landscape to treat greywater, highlighting a focus on environmental care. The inclusion of a composting toilet reinforces the sustainable practices applied throughout. This approach promotes a healthy relationship between the building and the landscape, allowing both to coexist.

Natural light plays a significant role in how the interior feels. Sunlight comes through openings, creating changing patterns on surfaces. This connection to the outside blurs the lines between indoors and outdoors, supporting the idea of harmony with nature.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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