Umushinga Amami House Inzu wa Kazunori Sakai ni uwatsinze igihembo cyubahwa cyane 2026 Igihembo cya A' Design Award cya Ifeza mu Cyiciro cy'Ihiganwa cya Igishushanyo cy'Ubwubatsi.

IfezaUbwubatsi· 2026

Amami House Inzu

na Kazunori Sakai

Umukiriya: Sakai Architects

Uwatsinze Igihembo cya A' Design Award cya Ifeza mu Cyiciro cya Ubwubatsi

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Uwatsinze Igihembo Yemejwe

Emeza Uko Igihembo Gihagaze ku #177153

Sura Urubuga Reba kuri A' Design Award Itangazo ry'Ikinyamakuru Ikimenyetso cy'Igihembo

Amabara

Imigereranyo

Ibyerekeye Amami House Inzu

Amami House ni inzu yihagije ubwayo iherereye ku kirwa cya Amami mu Buyapani, yateguriwe umuryango w'abantu bane. Iki kirwa gifite ikirere gishyushye kandi gifite ubuhehere bwinshi ndetse n'urumuri rw'izuba ruke. Iyi nzu ituma abayituye babaho neza batiyambaje umuyoboro w'amashanyarazi cyangwa ibyuma bikonjesha. Uburyo budakoresha ingufu nk'umwuka winjira mu buryo kamere, urumuri rw'izuba n'ibikoresho birinda ubushyuhe bigabanya icyifuzo cy'ibikoresho bya tekiniki. Imiterere gakondo y'igisenge cy'ubwoko bwa hip-and-gable yasubiwemo hakoreshejwe ibiranga imikorere igezweho. Igikoresho gishyushya amazi gikoresha izuba, uburyo bwo guhindura imyanda ifumbire ndetse n'ubusitani bwo mu rugo byuzuza uruziga ruto rwo kwihagije.

Ishimwe

Ibyerekeye Igihembo cya A' Design Award cya Ifeza

Amami House Inzu ni uwegukanye Igihembo cya A' Design Award cya Ifeza, ishimwe ridasanzwe ry'agaciro gakomeye ritangwa ku bishushanyo byo ku rwego rwo hejuru, byiza kandi bikora ku mutima. Abegukanye Ifeza ni ibihangano by'ubuhanga bukomeye kandi bifite guhanga kwinshi, bigaragaza ubuhanga bwimbitse, impano n'ubushishozi bw'ababihanze. Amami House Inzu biteganyijwe ko izaba igihangano cy'icyitegererezo, gifite ubunyamwuga bukomeye n'udushya twimbitse. Iki gishushanyo cyegukanye Ifeza ni igihangano kizwi kandi gishimwa, gifasha kugura imbibi z'ubuhanzi, ubumenyi, ubushushanyo n'ikoranabuhanga. Amami House Inzu ni igihangano benshi bifuza, gikangura ibyifuzo, gitanga amarangamutima meza kandi gitera igitangaza.

Inyuma y'Imigereranyo

Dosiye y'Itangazamakuru

Amazina y'abagize uruhare, abagize itsinda n'amakuru y'ubuhanga byatanzwe n'umuhanzi.

Ibintu Bidasanzwe: 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.
Ibipimo n'Ipaki: A vacuum-tube solar water heater installed on the east-facing roof supplies domestic hot water, reaching 60 to 97 degrees Celsius in summer and around 30 degrees in winter. Only minimal backup from a gas heater is needed, reducing gas consumption to less than half of that in the family’s previous rental home. Groundwater use was initially considered, but high iron content led to the adoption of a public water supply for greater reliability. The sauna is heated with wood repurposed from local construction offcuts, creating a circular resource exchange with nearby builders. A composting system turns kitchen waste into fertilizer for the home garden, where vegetables grown on-site return to the dining table, forming a small yet tangible cycle of self-sufficiency.
Ibibazo Fatizo: Off-grid housing, Passive design, Self-sufficient living, Vernacular architecture, Japan, Sustainable architecture, Resilient design, Energy autonomy, Community living, Climate-responsive design
Ikoranabuhanga ryo Guteza Imbere: 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.
Ikibazo cy'Ishusho: 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.
Ibyatumye Habaho: 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.
Igihe cy'Umushinga: Design Period: February 2018 – December 2023
Construction Period: January 2024 – August 2024
Amami island, KAGOSHIMA, JAPAN.
Uburyo bw'Imikorere: 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.
Abagize Itsinda: KAZUNORI SAKAI（ARCHITECT)
MASAYUKI TAKATA (Structural Engineer)
TOMOHIRO URATA (Garden Designer)
KAZUHIKO HANAI (Lighting Designer)
KAZUNORI KAWAGUCHI (Main Contractor)
MAKOTO TANAKA (Carpenter)
MICHIHIKO MINESHIMA (Electrical Contractor)
YASUNORI SAKAE (Plumbing Contractor）
Abafotoye: TOSHIHISA ISHII