Bronze Winner of the International Architecture & Design Awards 2025

INA HOUSE

Architecture

Single-family House Design

Completed / Professional Category

Architect / Designer:

Nobuaki Miyashita

Studio:

MR STUDIO Co.,Ltd.

Design Team:

Client: Isato Miyashita

Copyright:

Nobuaki Miyashita / MR STUDIO Co.,Ltd.

Country:

Japan

INA HOUSE is situated in Ina City, Nagano Prefecture, located near the center of Japan, offering magnificent views of the Southern Alps. This home, constructed atop a symbolic river terrace plateau in Ina City, features a design that harmonizes with nature and reflects the local culture.
INA HOUSE is a two-generation home shared by parent and child households, with the first floor designated for the parent household and the second floor for the child household. Moving beyond conventional rectangular designs, the house adopts a ‘wedge-shaped’ floor plan that maximizes the characteristics of the site, opening the entire home towards the Southern Alps. This shape integrates the changing landscapes of the mountains into family life with each passing season.
Additionally, the home’s symbolic feature, a boundary wall, is fitted with horizontal slit windows that blur the line between inside and outside, capturing the panoramic views of the ever-changing seasons. This design element is intended to deeply integrate the transitions of nature into daily life.
The approach to the house runs vertically through the center, naturally guiding visitors inside. The entrance hall features a double-height atrium with large glass windows that connect the natural surroundings at the front and back of the house. This open space cleverly separates private areas from guest areas.
On the first floor, the guest area utilizes traditional Japanese ‘tatami’ mats and ‘shikkui’ plaster finishes crafted by artisans, creating a modern and sophisticated space that blends Japanese and Western elements. This area reinterprets traditional materials in a contemporary style to adapt to new living standards.
INA HOUSE not only harmonizes with the natural environment of Ina City but also serves as a symbol of the region’s future. With its unique design and functionality, it aims to enrich the lives of its inhabitants.

MR STUDIO Co.,Ltd.

MR STUDIO Co., Ltd. is a cutting-edge architectural design firm established in Tokyo in April 2017. The company excels in creating concepts that reveal the potential needs and identity of each project and offers innovative designs that add value to spaces, buildings, and landscapes. Its scope includes a diverse range of building types such as residential, office, hotel, commercial, cultural facilities, and factories, as well as projects ranging from interiors to large-scale urban development. For each project, it carefully interprets the unique context of the location, aiming to create site-specific architecture that can only be realized in that place. Additionally, by integrating design elements such as signage, lighting, landscape, and product design with architecture, the firm creates spaces rich in sequence. The studio has been honored with nearly 300 international architecture and design awards, reflecting its global recognition and excellence in design.