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Rainwater Harvesting with Prefabricated Modules in a Flexible Living Space

Authors:
Dylan Morel, Dorian Bernard
Rainwater Harvesting with Prefabricated Modules in a Flexible Living Space
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Incorporating rainwater harvesting and prefabricated modules, the design offers a flexible living space that adapts to the needs of its occupants while promoting sustainable practices.
5 key facts about this project
01
Modular construction allows for easy adaptation to various environments.
02
Integrates a rainwater harvesting system to ensure fresh water access.
03
Features a multifunctional wood-burning stove at the center of the living space.
04
Movable furniture enhances spatial flexibility for diverse activities.
05
Includes a greenhouse for promoting onsite food production.

The Ecohaven project offers a thoughtful solution to current issues like climate change and resource management. Located in various urban and rural settings, this modular home focuses on providing flexible living spaces that encourage energy independence. The design concept centers on combining sustainable practices with everyday functionality, creating an environment that aligns with nature.

Design Concept
The layout of the Ecohaven is organized into distinct areas that address the different needs of its occupants. Spaces for resting, bathing, cooking, dining, and even farming are clearly defined. These areas link to a central living space, featuring a wood-burning stove that serves multiple purposes. This arrangement fosters a sense of connectedness while maintaining practicality in everyday life.

Material Selection
The materials chosen for the Ecohaven emphasize sustainability and efficiency. Primarily, wood is used as the main building material due to its eco-friendly characteristics and low carbon footprint. Plywood is included in the prefabricated modules, making construction straightforward and efficient. Alongside these, metal cladding and corrugated polycarbonate provide durability. These materials together support the home's overall design aims.

Sustainable Features
Self-sufficiency is a crucial aspect of Ecohaven's design. It features a rainwater harvesting system that is paired with a reservoir in the foundation, ensuring access to fresh water even in difficult conditions. The incorporation of photovoltaic panels and greywater treatment enhances the home’s capability to function independently from outside resources. These systems work together to create a sustainable living environment.

Spatial Adaptability
Movable furniture is a key detail in the Ecohaven, allowing the interior layout to change based on the occupants' needs. This flexibility makes efficient use of space and supports a lively living area that can accommodate various activities. Additionally, an integrated greenhouse is part of the design, promoting food production and encouraging a stronger relationship between residents and their surroundings.

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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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