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Modular Steel Frame Microhome with OSB Panels and Rainwater Harvesting Systems

Modular Steel Frame Microhome with OSB Panels and Rainwater Harvesting Systems
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Constructed with a modular steel frame and OSB panels, this microhome incorporates rainwater harvesting systems to provide an affordable housing solution that maximizes space and community interaction.
5 key facts about this project
01
Modular design allows for easy relocation and expansion based on occupant needs.
02
OSB panels provide an economical solution while ensuring structural integrity and insulation.
03
Rainwater harvesting system supports sustainable living by reducing water consumption.
04
Communal terrace promotes social interaction among residents, enhancing community ties.
05
Extensive glazing maximizes natural light and connects interior spaces to the surrounding environment.

### Overview
Located in Arraial do Cabo, Rio de Janeiro, the microhome design "Taking Flight" addresses the urgent need for affordable housing in Brazil. This project responds to the financial and spatial challenges faced by many residents through an innovative architectural approach that emphasizes practical living solutions within a compact area of 24.5 square meters. By integrating elements that promote social interaction, environmental sustainability, and efficient use of space, this design aims to enhance the quality of life for its occupants while remaining economically viable.

### Spatial Configuration and Functionality
The interior layout of the microhome is thoughtfully organized to support a range of daily activities while maximizing functionality within a limited footprint. It includes distinct zones for living, cooking, sleeping, and working, ensuring that each area serves its purpose effectively. A dual-purpose shower and water closet optimize space without sacrificing privacy, exemplifying the design's commitment to usability. Additionally, extensive glazing is incorporated to provide natural light and ventilation, contributing to a comfortable living environment.

### Material Selection and Sustainability
Materiality plays a pivotal role in the design's overall effectiveness and sustainability. The structural framework utilizes a modular steel system, which permits easy transport and assembly, thereby enhancing mobility. Wood elements in the cladding and decking not only provide aesthetic warmth but also improve thermal performance. Further promoting sustainability, the design includes rainwater harvesting systems, provisions for waste management, and the potential for solar panel installations. These features collectively support a responsible lifestyle and minimize ecological impact, aligning with the project's intent to create affordable and environmentally conscious housing.

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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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Design the next suburban home for the USA

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Eligibility Open to all
Early bird registration deadline 19 November 2025

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