Amami House

Residence for SAKAI ARCHITECTS

Located on Amami Oshima, a hot, humid, and relatively sunless region in Japan, this self-sufficient house explores how a family of four can live comfortably without relying on the power grid or air conditioning. Rooted in the island's climate and culture, it reinterprets vernacular forms through passive strategies, natural ventilation, daylighting and insulation reducing dependence on mechanical systems. The project proposes a sustainable model of living in harmony with nature, offering a quiet reflection on how architecture can nurture resilience and redefine dwelling in today's world.

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Amami House by KAZUNORI SAKAI

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Residence by KAZUNORI SAKAI

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KAZUNORI SAKAI Amami House

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KAZUNORI SAKAI Residence

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KAZUNORI SAKAI Designer Portrait Photo

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Unique Properties

Located on Amami Island, an island with a hot and humid climate and among the lowest levels of solar radiation in Japan, this self-sufficient house investigates how a family of four can live comfortably without dependence on the power grid or air conditioning. Rooted in the island’s unique climate and culture, the design reinterprets vernacular architecture through passive strategies, including natural ventilation, daylighting, and insulation, thereby minimizing reliance on mechanical systems. The project presents a sustainable model of living in harmony with nature, nurturing resilience, and quietly redefining what it means to dwell in the modern world.

Tags

Off-grid housing, Passive design, Self-sufficient living, Vernacular architecture, Japan, Sustainable architecture, Resilient design, Energy autonomy, Community living, Climate-responsive design

Production Technology

Amami is often called the “Island of Yui,” known for its deeply interwoven social ties. Traditional celebrations for children’s milestones often bring together more than 80 relatives and neighbors, reflecting a collective culture where child-rearing is shared across families and the wider community, and homes have historically functioned as both private and communal spaces. In recent years, however, such practices have diminished due to nuclear families, standardized housing, and the impact of the pandemic. This house responds by reintroducing openness and generosity into the domestic realm, creating spaces where people can naturally gather and share time together, reviving and sustaining the island’s cultural traditions.

Design Challenge

The hardest part was designing a truly self-sufficient house in one of Japan’s most demanding climates—hot, humid, and with limited solar radiation—while removing dependence on the power grid and air conditioning. Balancing comfort and resilience required continuous testing of passive strategies, energy autonomy, and spatial composition, with every decision responding precisely to local climate data. Equally challenging was integrating cultural elements such as the dispersed house form, the openness of yui community ties, and traditional roof expressions into a contemporary language sustaining both environmental and communal life.

Project Duration

Design Period: February 2018 – December 2023 Construction Period: January 2024 – August 2024 Amami island, KAGOSHIMA, JAPAN.

Operation Flow

The project gently explores a sustainable way of living in harmony with the natural environment. Embracing the unique climate and culture of the southern islands, it quietly reexamines what it means to dwell in the modern age.

Inspiration

Inspired by the vernacular landscapes of Amami, where corrugated metal roofs are commonly seen across local settlements, the design inherits the traditional hip-and-gable roof form and integrates contemporary performance features such as insulation, ventilation, and natural lighting. Through this synthesis, the project reinterprets and reconstructs the roof as a new architectural typology that connects local identity with modern functionality.

Image Credits

TOSHIHISA ISHII

Project Overview

Amami House Residence has been a Silver winner in the Architecture, Building and Structure Design award category in the year 2025 organized by the prestigious A' Design Award & Competition. The Silver A' Design Award celebrates top-tier designs that embody excellence and innovation. This award acknowledges creations that are not only aesthetically pleasing but also highly functional, reflecting the designer's deep understanding and skill. Silver A' Design Award recipients are recognized for their contribution to raising industry standards and advancing the practice of design. Their work often incorporates original innovations and elicits a strong emotional response, making a notable impact on the improvement of everyday life.

Silver Recognition

KAZUNORI SAKAI was recognized with the coveted Silver A' Design Award in 2026, a testament to excellence of their work Amami House Residence.

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