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Rainwater Harvesting and Butterfly Roof Ties Microhome to Nature

Authors:
Chuah Yi Qing, Lim Kah Ying, Chan Eng Xin, Lee Jia Yi
Rainwater Harvesting and Butterfly Roof Ties Microhome to Nature
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With a butterfly roof designed for rainwater harvesting, this microhome integrates seamlessly into its natural surroundings, providing a functional living space for a couple of floral researchers.
5 key facts about this project
01
Butterfly roof enhances rainwater collection efficiency.
02
Integrates a variety of local vegetation for biodiversity.
03
Designed specifically for the needs of floral researchers.
04
Compact layout supports simultaneous activities in limited space.
05
Uses sustainable systems for energy and water management.

Fortress is located on the outskirts of town, designed to create a strong connection with the surrounding landscape. The structure sits by a water body, allowing it to integrate naturally into the environment. It serves as a home for a couple who are floral researchers. The design focuses on blending private and shared spaces, enabling both solitude and togetherness.

Design Concept

The layout of Fortress is arranged with careful consideration of comfort and usability. Several areas serve different functions, providing a practical space for various activities. The arrangement is designed to encourage interaction while still allowing for moments of privacy. Familiar shapes and spaces help create a welcoming atmosphere, enhancing the living experience for its occupants.

Sustainable Strategies

Sustainability is an important aspect of Fortress. It features a rainwater harvesting system, cleverly designed with a butterfly roof that collects water efficiently. This system not only supports the home’s needs but also contributes to its overall appearance. The thoughtful design demonstrates a commitment to minimizing environmental impact.

Renewable Energy Integration

Solar panels on the roof face the sun directly, maximizing energy collection and reducing dependence on outside sources. This integration of renewable energy highlights the home's efficiency. It supports a sustainable lifestyle and reflects a modern approach to energy use in residential design.

Architectural Detail

The design pays close attention to the relationship with the surrounding vegetation. A variety of plants are included around the structure, enhancing its appearance while also supporting local wildlife. This aspect reinforces Fortress as part of the ecosystem, blending architecture with nature in a way that is both functional and visually appealing.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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Competition organisers

The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 October 2025

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