Mitsui Home Opens 'Komazawa Park No. 3 Model House' Featuring New Construction Technology
In April 2026, Mitsui Home Co., Ltd. opened its 'Komazawa Park No. 3 Model House' in Setagaya-ku, Tokyo. This facility serves as a hub for proposing next-generation living environments based on the company's sustainability brand, '&EARTH with WOOD'. It is the first to feature the newly developed proprietary 'MOCX WALL construction method,' which achieves large 3-meter-high openings while maintaining high seismic resistance. This design allows for abundant natural light and creates an open space that seamlessly connects the interior and exterior. Through this latest technology, Mitsui Home aims to contribute to a decarbonized society and enhance resident wellbeing.
📋 Article Processing Timeline
- 📰 Published: May 19, 2026 at 19:00
- 🔍 Collected: May 19, 2026 at 10:31
- 🤖 AI Analyzed: May 20, 2026 at 07:39 (21h 7m after Collected)
Mitsui Home Co., Ltd. announced the April 2026 opening of its 'Komazawa Park No. 3 Model House' within the Komazawa Park Housing Gallery in Setagaya-ku, Tokyo.
Developed under the philosophy of its sustainability brand '&EARTH with WOOD'—"to continue providing high-quality wooden architecture with wood that is gentle to people and the planet"—this model house serves as a base for proposing next-generation living environments. It aims to contribute to a decarbonized society in the construction sector by maximizing the potential of wood as a renewable resource, while also seeking to alleviate urban living stress and promote physical and mental health (wellbeing).
As a core technology to expand the 'potential of wood,' the house is the first to adopt the newly developed proprietary 'MOCX WALL construction method.' This method minimizes the volume of walls while maintaining the highest level of seismic strength, creating a large 3-meter-high opening without down-walls—a feature previously difficult to achieve in conventional two-by-four wooden construction. This enables designs that maximize natural light and seamlessly connect the interior with the exterior. The company strives to evolve homes that are gentle to people and the planet through the latest technology, contributing to a sustainable society and providing an enriched lifestyle.
Key Points of This Model House:
- 'Liberation from walls' through the proprietary 'MOCX WALL construction method,' used for the first time in a model house.
- Pursuit of 'wellbeing design' that promotes mental and physical balance.
- Contribution to a decarbonized society guided by '&EARTH with WOOD.'
Background of the Development Vision: 'Connecting - The Future Residence'
There is growing interest in building a sustainable society, in residents' health consciousness, and in the value of 'quiet luxury,' which seeks essential richness rather than ostentation.
As a leading company in two-by-four construction, Mitsui Home has pursued the realization of a decarbonized society by leveraging wood's carbon storage capacity and has focused on livability by utilizing the inherent properties of wood. The high insulation and comfort unique to wooden houses directly contribute to a healthy and comfortable life for residents and are fundamental to the 'Keinen Yuka' (value-enhancing aging) philosophy, where attachment deepens over time.
This model house, with its development vision of 'Connecting - The Future Residence,' aims to create essential comfort that enriches the minds and bodies of residents and contributes to beautiful cityscapes, even on limited sites. It proposes a new standard for Mitsui Home, connecting the outside and inside, as well as the past and future, through the latest wood technology.
Main Features of 'Komazawa Park No. 3 Model House':
1. Structural Innovation and Spatial Openness with the 'MOCX WALL Construction Method'
The high-strength bearing wall technology cultivated in the wooden condominium 'MOCXION' has been optimized and introduced for single-family homes. While ensuring high seismic performance, it significantly reduces 'down-walls' and 'bearing walls,' which were structural characteristics. This achieves a '3-meter-high large opening' that maximizes light and wind even on limited urban sites, providing residents with a sense of physical and psychological openness.
2. 'Wellbeing Design' to Regulate Residents' Biorhythms
A refreshing environment for daily life is created through spatial design that utilizes the natural texture of wood and a circulation plan that emphasizes connection with the outdoors, such as a two-way cantilevered balcony enabled by the 'MOCX WALL construction method.' This approach treats architectural technology as an element contributing to residents' health maintenance and presents a model for a living environment that fosters sustained wellbeing.
3. Approach to a Decarbonized Society with '&EARTH with WOOD'
By maximizing the use of wood—a renewable resource with carbon storage effects—in construction with the latest technology, the company contributes to solving the societal challenge of global warming. It aims to balance environmental conservation with a high-quality living experience by consolidating its 'wood technology.'
Architectural Overview:
Name: Komazawa Park No. 3 Model House (MITSUI HOME KOMAZAWA)
Location: Setagaya-ku, Tokyo (within Komazawa Park Housing Gallery)
Structure: MOCX WALL construction method (2 stories)
Total Floor Area: 243.02㎡ (73.51 tsubo)
Developed under the philosophy of its sustainability brand '&EARTH with WOOD'—"to continue providing high-quality wooden architecture with wood that is gentle to people and the planet"—this model house serves as a base for proposing next-generation living environments. It aims to contribute to a decarbonized society in the construction sector by maximizing the potential of wood as a renewable resource, while also seeking to alleviate urban living stress and promote physical and mental health (wellbeing).
As a core technology to expand the 'potential of wood,' the house is the first to adopt the newly developed proprietary 'MOCX WALL construction method.' This method minimizes the volume of walls while maintaining the highest level of seismic strength, creating a large 3-meter-high opening without down-walls—a feature previously difficult to achieve in conventional two-by-four wooden construction. This enables designs that maximize natural light and seamlessly connect the interior with the exterior. The company strives to evolve homes that are gentle to people and the planet through the latest technology, contributing to a sustainable society and providing an enriched lifestyle.
Key Points of This Model House:
- 'Liberation from walls' through the proprietary 'MOCX WALL construction method,' used for the first time in a model house.
- Pursuit of 'wellbeing design' that promotes mental and physical balance.
- Contribution to a decarbonized society guided by '&EARTH with WOOD.'
Background of the Development Vision: 'Connecting - The Future Residence'
There is growing interest in building a sustainable society, in residents' health consciousness, and in the value of 'quiet luxury,' which seeks essential richness rather than ostentation.
As a leading company in two-by-four construction, Mitsui Home has pursued the realization of a decarbonized society by leveraging wood's carbon storage capacity and has focused on livability by utilizing the inherent properties of wood. The high insulation and comfort unique to wooden houses directly contribute to a healthy and comfortable life for residents and are fundamental to the 'Keinen Yuka' (value-enhancing aging) philosophy, where attachment deepens over time.
This model house, with its development vision of 'Connecting - The Future Residence,' aims to create essential comfort that enriches the minds and bodies of residents and contributes to beautiful cityscapes, even on limited sites. It proposes a new standard for Mitsui Home, connecting the outside and inside, as well as the past and future, through the latest wood technology.
Main Features of 'Komazawa Park No. 3 Model House':
1. Structural Innovation and Spatial Openness with the 'MOCX WALL Construction Method'
The high-strength bearing wall technology cultivated in the wooden condominium 'MOCXION' has been optimized and introduced for single-family homes. While ensuring high seismic performance, it significantly reduces 'down-walls' and 'bearing walls,' which were structural characteristics. This achieves a '3-meter-high large opening' that maximizes light and wind even on limited urban sites, providing residents with a sense of physical and psychological openness.
2. 'Wellbeing Design' to Regulate Residents' Biorhythms
A refreshing environment for daily life is created through spatial design that utilizes the natural texture of wood and a circulation plan that emphasizes connection with the outdoors, such as a two-way cantilevered balcony enabled by the 'MOCX WALL construction method.' This approach treats architectural technology as an element contributing to residents' health maintenance and presents a model for a living environment that fosters sustained wellbeing.
3. Approach to a Decarbonized Society with '&EARTH with WOOD'
By maximizing the use of wood—a renewable resource with carbon storage effects—in construction with the latest technology, the company contributes to solving the societal challenge of global warming. It aims to balance environmental conservation with a high-quality living experience by consolidating its 'wood technology.'
Architectural Overview:
Name: Komazawa Park No. 3 Model House (MITSUI HOME KOMAZAWA)
Location: Setagaya-ku, Tokyo (within Komazawa Park Housing Gallery)
Structure: MOCX WALL construction method (2 stories)
Total Floor Area: 243.02㎡ (73.51 tsubo)