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Lenga Wood Shelter Supporting Biodiversity Recovery with Removable Core

Authors:
Catalina Sobarzo, Cristobal Rodriguez, Evelyn Novoa
Lenga Wood Shelter Supporting Biodiversity Recovery with Removable Core
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Constructed from lenga wood and equipped with a removable core, this micro housing unit facilitates ecological research while supporting biodiversity recovery in remote forested areas.
5 key facts about this project
01
Constructed with a dual-layer system that includes an intermediate space for ecological impact mitigation.
02
Utilizes ecological structural insulated panels that enhance thermal efficiency and space utilization.
03
The external layer of lenga wood decomposes naturally to support local vegetation and wildlife habitats.
04
Internal core is designed for easy removal and repurposing after each research campaign.
05
Facilitates self-sufficient operation with integrated clean energy systems, generating zero waste.

Sepal House is a micro housing unit built for ecological restoration in remote forest areas that face environmental harm. With a focus on supporting researchers, the structure aims to aid the recovery of biodiversity in regions impacted by pollution and other threats. The design concept centers on being modular and adaptable, allowing it to fit into the natural surroundings while keeping its environmental impact low.

Modular Design

The design consists of two layers that work together to create a functional space. The outer layer serves as a protective shell, while the inner core is constructed using ecological structural insulated panels. These panels provide effective space management and good insulation. The modular design allows for quick assembly in challenging locations, making it easier to set up in remote areas.

Sustainable Materials

For the external layer, lenga wood is chosen for its ability to blend with the surrounding environment. This material not only enhances the structure’s natural look but also supports ecology as it decays over time, allowing plants to grow back and giving animals a place to thrive. Using sustainable materials reflects a commitment to environmental care.

Functional Integration

Inside, clean energy systems are integrated into the core, enabling the unit to operate without creating waste. This aspect is essential for researchers, as it allows them to carry out their work even in isolated conditions. Additionally, the internal layer can be removed and reused for future projects, extending the life of materials and enhancing overall utility.

The design features an intermediate space between the two layers that acts as a cushion, reducing the impact on the environment. This thoughtful design element shows that human activity can coexist with nature, supporting essential research while respecting the ecosystem.

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

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Competition organisers

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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