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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

Project in-detail

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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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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