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Rammed Earth Walls and Natural Masonry in a Compact Sustainable Retreat

Authors:
Yinka Richer, Andrei Leasu, Rene Raducu
Rammed Earth Walls and Natural Masonry in a Compact Sustainable Retreat

Project in-detail

Constructed with rammed earth walls and natural masonry, the cabin offers a compact and functional living space that harmonizes with its New Zealand setting while prioritizing sustainability.
5 key facts about this project
01
Rammed earth walls enhance thermal insulation and structural stability.
02
A pavilion-style dining area offers panoramic views of the landscape.
03
The bedroom features a detached bathtub for a unique outdoor experience.
04
All doors can fully open to create a seamless indoor-outdoor connection.
05
Natural rubble stone masonry is used for the foundation and aesthetics.

The self-sustainable cabin in New Zealand is designed to accommodate two occupants. The project focuses on harmonizing with the surrounding landscape while ensuring a functional living space. The design draws from an understanding of the local climate, geography, and orientation, creating an environment that supports both comfort and connection to nature.

Day Area

The cabin is divided into two main sections: the day area and the night area. In the day area, the living room and pavilion-style dining room are strategically placed to face southeast. This positioning allows for plenty of natural light and provides broad views of the landscape. The design is practical, featuring necessary appliances and a technical maintenance room that enhances the living experience without sacrificing comfort.

Night Area

The night area is dedicated to rest and relaxation. It includes a cozy bedroom that offers direct views of the outside world, accompanied by a detached bathtub nearby. This setup emphasizes privacy while still allowing occupants to enjoy their natural surroundings. The opening doors facilitate a smooth transition between the indoor and outdoor spaces, making the connection with nature more intimate.

Thermal Performance

Addressing local climate needs is an important aspect of the design. A dedicated wall serves dual purposes, providing storage for wardrobes while acting as a barrier that separates the two areas. This design helps block cold winds from the west, enhancing insulation and comfort within the cabin. Such thoughtful planning creates a peaceful and private space for residents.

Sustainable Elements

The choice of materials significantly contributes to the cabin’s overall design. The foundation consists of natural rubble stone masonry with cement mortar, offering a stable base. The structure is made from reinforced rammed earth and timber framing, which adds strength and longevity. The roof features a hidden pitched wooden frame that effectively manages water drainage. To promote sustainability, the cabin incorporates renewable energy sources, including wind turbines and solar panels. These elements allow the dwelling to operate independently, reflecting modern approaches to living in harmony with the environment.

The layout and materials come together to create a practical yet thoughtful retreat, where the natural world becomes an integral part of daily life.

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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
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