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Subterranean Structure Embracing Corten Steel and Concrete with Integrated Hydroponics

Subterranean Structure Embracing Corten Steel and Concrete with Integrated Hydroponics
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Constructed with Corten steel and concrete, this subterranean car barn integrates hydroponic farming and versatile spaces to serve as a practical storage facility while promoting sustainability within its natural landscape.
5 key facts about this project
01
Constructed partly underground to minimize visual impact and enhance landscape integration.
02
Incorporates hydroponic farming to promote sustainable urban agriculture within the facility.
03
Features Corten steel cladding that develops a unique patina over time, enhancing durability.
04
Includes multifunctional spaces to serve community needs beyond vehicle storage.
05
Utilizes passive design principles to optimize natural light and thermal efficiency.

### Overview

Located within a rural or semi-rural setting characterized by grassy terrain and gentle slopes, the Subterranean Car Barn incorporates sub-surface design elements that enhance its integration with the natural environment. The primary intent of the project is to minimize disruption to the landscape while providing a multifunctional facility that serves both vehicular storage and communal activities. The architectural approach emphasizes a barn aesthetic, aligning it aesthetically with traditional agricultural structures and reinforcing its contextual relevance.

### Spatial Configuration

The design features a series of volumetric elements arranged in a linear fashion, echoing natural formations. This configuration promotes an open relationship with the surrounding landscape, facilitating smooth transitions for both vehicles and pedestrians. The interior layout accommodates not only vehicle storage but also spaces for work and leisure, including a commercial kitchen, office areas, and storage facilities. The inclusion of an indoor hydroponic farm further emphasizes the project's commitment to functionality and sustainability.

### Material Considerations

The material palette is anchored by concrete, which provides structural integrity and durability while accommodating diverse forms. Corten steel is utilized for its weathered aesthetics and corrosion resistance, harmonizing with the rustic environment. Wooden elements introduce warmth and texture, particularly in shared spaces, enhancing user experience and fostering a welcoming atmosphere. Expansive glass windows allow ample natural light into the interior, enhancing connections to the exterior and improving overall user engagement.

### Sustainable Integration

Sustainable design practices are central to the project, incorporating green technologies such as solar energy systems and hydroponics within its operational framework. The interplay of natural and industrial materials not only supports durability but also reflects ecological sensitivity, positioning the Car Barn as a model for contemporary architectural practices that prioritize environmental stewardship and community inclusivity.

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MICROHOME 2026
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The Next House: USA
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20,000 USD Prize
Buildner's Unbuilt Award 2026
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100,000€ Prize / 2026

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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