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Rainwater-Collecting Home with Recycled Metal and Ventilated Facade

Author:
Jovana Dmitrić
Rainwater-Collecting Home with Recycled Metal and Ventilated Facade
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Utilizing a ventilated facade and recycled metal, the residence seamlessly integrates rainwater harvesting and geothermal energy systems to create an efficient living space for two.
5 key facts about this project
01
Utilizes a modular design with standardized components to minimize waste.
02
Incorporates a rainwater harvesting system for efficient water management.
03
Features a ventilated facade that enhances thermal performance and air circulation.
04
Employs geothermal energy for efficient temperature regulation throughout the year.
05
Integrates recycled metal as a key structural element to promote sustainability.

The design features a compact residence intended for two people, with a total building area of 25 square meters and a usable space of 19 square meters. Positioned in either an urban setting or a natural landscape, the house emphasizes ecological principles while providing functional living space. The overall design includes a ventilated facade, which improves thermal regulation and promotes a connection to the surroundings.

Building Concept

The house is constructed using low environmental impact materials, which play a significant role in promoting sustainability. Key materials include wood, stone, clay, and recycled metal for structural support. These materials are intentionally left in their natural state, helping to minimize volatile organic compounds (VOCs) and ensuring a healthier indoor atmosphere. A modular design approach with standardized components, each measuring 60 cm, allows for adaptability to the residents' changing needs while reducing waste during construction.

Energy Efficiency

A central focus of the design is energy efficiency, incorporating both passive and active systems that enhance performance. The geothermal energy system regulates indoor temperatures by utilizing stable underground temperatures, which cuts down on reliance on conventional energy sources. Cross-ventilation strategies are achieved through roof windows, promoting natural air circulation and thermal comfort. Additionally, the building’s east-west orientation maximizes solar exposure, improving energy performance and providing ample natural light to living spaces.

Water Management

The project includes a rainwater harvesting system designed to collect and store water for household use, especially for washing machines. This approach highlights efficient resource management while staying true to the aesthetic concerns of the residence. Cisterns are built into the facade and feature a double thermal wall to reduce heat loss and protect the water from contamination, further emphasizing the commitment to sustainability.

Renewable Energy Integration

Photovoltaic solar panels are installed on the roof to convert solar energy into electricity and thermal energy for heating water. This integration supports the building’s functionality and reduces environmental impact. The careful planning of these energy features is a key aspect of the design, enhancing overall efficiency while maintaining a balance with the outdoor environment.

The design integrates features that provide a connection between indoor and outdoor spaces, paying attention to natural light and ventilation. This thoughtful approach ensures a practical and sustainable living space that aligns with contemporary ecological architectural principles.

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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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