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Rammed Earth Walls and Photovoltaic Solutions in Sustainable Community Housing

Rammed Earth Walls and Photovoltaic Solutions in Sustainable Community Housing
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With rammed earth walls that enhance thermal mass and integrated photovoltaic systems, the design provides a sustainable housing solution for a transient population in the heart of Veracruz’s coffee plantations.
5 key facts about this project
01
Rammed earth walls enhance thermal mass and energy efficiency.
02
Integrated photovoltaic systems support off-grid living.
03
Large windows optimize natural ventilation and daylighting.
04
Community spaces encourage social interaction among residents.
05
Rainwater harvesting tanks are incorporated for effective water management.

### Project Overview

Situated on coffee plantations in Veracruz, Mexico, the design aims to deliver affordable and sustainable housing tailored to a migrant population. Given the significant demand for off-grid housing in the region, this initiative innovatively combines prefabricated components with traditional construction techniques. The outcome emphasizes low carbon emissions while ensuring optimal thermal comfort and structural integrity.

### Spatial Organization and User Interaction

The floor plan of the housing units showcases an intelligent distribution of spaces. Communal areas, including dining and living rooms, are designed to promote social interaction among residents, while private spaces, such as bedrooms, ensure comfort and privacy. A stepped entryway enhances accessibility and creates an inviting outdoor area that encourages community gatherings. This layout not only facilitates daily living but also strengthens social bonds within the migrant population.

### Material and Environmental Strategies

The project employs a diverse palette of materials, focusing on sustainability and functionality. Locally sourced timber and rammed earth form the primary structural components, complemented by prefabricated QuadCore panels that offer superior thermal insulation. Photovoltaic cells are integrated into the roofing system to harness solar energy, while rainwater harvesting systems utilizing 2000-litre slimline tanks support effective water management. The design incorporates thermal mass walls and cross-ventilation strategies to enhance indoor comfort and minimize dependence on mechanical cooling systems. These strategies collectively establish a resilient and resource-efficient housing solution.

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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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