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Charred Wood Structure Embracing Natural Light for Eco-Friendly Retreat

Author:
Mayumi Iitsuka
Charred Wood Structure Embracing Natural Light for Eco-Friendly Retreat
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Utilizing Shou Sugi Ban techniques for durability and natural insulation, the guest house seamlessly integrates an undulating interior to foster connectivity with its landscape while prioritizing energy efficiency and comfort.
5 key facts about this project
01
Utilizes Shou Sugi Ban for improved water resistance and durability.
02
Features an undulating landscape-like interior to enhance spatial flow.
03
Incorporates triple glazing glass to maximize natural light and energy efficiency.
04
Reuses grate boards for ceiling insulation, prioritizing resource efficiency.
05
Integrates plant-based insulation materials within the structure.

The Ozolini Teamakers Guest House is designed to blend harmoniously with the surrounding landscape while promoting sustainable living practices. Located in an area that emphasizes ecological mindfulness, the guest house provides a tranquil retreat and showcases principles of responsible design. The main idea is to create a connection between indoor spaces and the natural world, offering comfort and consideration for the environment.

Spatial Configuration

The first floor features an open layout with an undulating, landscape-like interior. This design allows for easy movement and interaction between rooms, fostering a sense of calm and accessibility. Effective insulation and a circular floor plan work in tandem to conserve energy, particularly in heating, thereby minimizing the building's environmental impact.

Natural Light and Ventilation

Special attention is given to natural light and ventilation throughout the guest house. By raising the existing roof, the design enhances daylighting, while the use of triple glazing glass improves thermal performance. These features contribute to better air quality and reduce the need for electricity, supporting the project’s aim for sustainability.

Materiality

Material choices play a key role in the design. Grate boards are used on the south and north sides, as well as for flooring. The project incorporates the traditional Japanese method known as "Shou Sugi Ban," which consists of charring wood to increase its durability and resistance to water. This technique provides a maintenance-friendly, aesthetic solution that aligns with the house's sustainable goals.

Design Detailing

Architectural details, such as reusing grate boards for ceiling insulation, illustrate a commitment to resource efficiency. Each aspect of the design is carefully considered to enhance the user experience. The interior spaces are warm and inviting, with visually interesting undulating surfaces that create varied interactions between light and shadow. This thoughtful approach ensures that the guest house is a comfortable space for relaxation and connection with nature.

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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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Early bird registration deadline 19 November 2025

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