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Water-Reusing Home with Straw Roof and Open Layout

Authors:
Manuel Lara, Pol Aguilella, Ignacio Martínez
Water-Reusing Home with Straw Roof and Open Layout
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Constructed with a sloping straw roof that facilitates water reuse, this home features an open layout with strategically placed service areas, addressing local housing needs while embracing environmental sustainability.
5 key facts about this project
01
The design incorporates a sloping gable roof to enhance interior spatial perception.
02
Bathroom and kitchen placement on the sides optimizes central living space.
03
Straw and wood materials reflect local building traditions and cultural context.
04
Rainwater collection system integrated into the roof design promotes sustainability.
05
Large openings allow natural light and airflow, improving energy efficiency.

"Jacal" is an innovative housing solution located in Guatemala, designed to meet local needs for shelter. It draws inspiration from traditional building techniques while also embracing modern principles of sustainability. The focus on user participation in construction makes the design practical, allowing residents to engage in the building process. The overall concept is shaped by the climate of the region, creating a connection between indoor spaces and the natural environment outside.

Spatial Layout

The layout of Jacal features a thoughtful arrangement of spaces. The bathroom and kitchen are placed on either side of the home, opening up a large central area. This design choice encourages community interaction and enhances the feeling of openness. It limits unnecessary circulation spaces while ensuring that essential areas remain functional and comfortable, even in a compact structure.

Roof Structure

A distinct aspect of Jacal is its sloping gable roof. This roof design not only contributes to a sense of spaciousness within the home but also helps avoid feelings of tightness. Additionally, the roof is designed to capture and reuse rainwater through drainage pipes. This feature aligns with sustainable practices by promoting responsible water use in a region where water conservation is crucial.

Material Choices

The construction of Jacal relies on proximity materials, specifically straw and wood. These materials are significant for their practicality and connection to local traditions. By using materials sourced from the surrounding area, Jacal reflects the cultural context while also supporting environmentally friendly building habits. This choice further strengthens the bond between the home and its setting.

Sustainability Features

Sustainability plays a vital role in Jacal’s design. Solar panels are strategically placed on the roof, demonstrating a commitment to reducing the dwelling's impact on the environment. Natural ventilation and ample sunlight contribute to a comfortable living space. The integration of large openings enhances indoor lighting, creating a warm and inviting atmosphere that complements the outdoor lifestyle common in Guatemala.

Natural light flows generously through the open spaces, making the home feel bright and welcoming.

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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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