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Rainwater Garden and X Frame Structure in a Sustainable Retreat

Author:
Lily Smith
Rainwater Garden and X Frame Structure in a Sustainable Retreat

Project in-detail

The integration of a rainwater garden and an X Frame structural system defines a sustainable retreat that fosters a deep connection with the natural landscape while providing a serene getaway for occupants.
5 key facts about this project
01
Rainwater garden unites the two wings of the structure for enhanced ecological integration.
02
X Frame construction promotes efficiency in both material use and structural stability.
03
FSC-certified plywood enhances sustainability while providing a warm interior aesthetic.
04
Open floor plan maximizes natural light and views, fostering a connection to the landscape.
05
Cross ventilation design ensures effective airflow, improving thermal comfort throughout the seasons.

The Butterfly Hut, located in Mangatarata, New Zealand, serves as a retreat that emphasizes a strong connection with nature and a focus on sustainability. It is designed as a cozy getaway, providing a serene environment for individuals looking to unwind. The design concept draws inspiration from the butterfly, reflected in both the form and overall function of the structure. This approach promotes a sense of simplicity and harmony while inviting occupants to engage meaningfully with the surrounding landscape.

Architectural Concept

The shape of the Butterfly Hut features a roof that mirrors the symmetry of a butterfly. This visual language enhances the overall appeal of the cabin while allowing for straightforward construction. An open floor plan is an essential aspect of the design, with the only enclosed area being the toilet. This layout fosters a continuous flow between living spaces and sleeping areas, creating an inviting and spacious interior that encourages light and air movement.

Spatial Configuration

A key element in the design is the pinch that creates a subtle transition between the living area and the sleeping quarters. This thoughtful configuration divides the space functionally without completely closing it off. The northern façade is designed to open up toward the landscape, allowing natural light to flood the interior and offering beautiful views. This connection to the outdoors is integral to the experience of the hut, providing a calm and peaceful atmosphere.

Material Selection

Materials chosen for the Butterfly Hut are sourced from local suppliers, aligning with the commitment to environmental sustainability. The structure is made using an X Frame structural wall system, complemented by FSC-certified plywood used for the internal lining. Abodo Vulcan Cladding adds to the exterior, while Colorsteel Endura roofing ensures durability. These material choices not only contribute to the aesthetic value of the cabin but also support ecological principles.

Sustainability Features

Sustainability is a central focus of the design, with several features introduced to minimize environmental impact. The Butterfly Hut incorporates systems for rainwater harvesting and greywater recycling, enhancing its functionality and ecological responsibility. Additionally, photovoltaic panels are fitted on the roof to capture solar energy, providing power to the cabin while storing excess energy for future use.

A rainwater garden connects the two wings of the cabin, serving as a focal point for occupants. It encourages reflection and creates a deeper bond with the natural environment, enhancing the overall experience of the space.

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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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