Home For Family

Home For Family
© hirota tatsuya

Home for Family

Koki Sugawara Architects

CONSTRUCTION
Efforks, Rikiya Terai

MANUFACTURERS
Hi-ceramics, Mortex, Nippon Chemitec, Sangetsu, Toolbox

LEAD ARCHITECT
Koki Sugawara

PHOTOGRAPHS
Hirota Tatsuya

AREA
84 m²

YEAR
2022

LOCATION
Japan

CATEGORY
Houses

Home For Family
© hirota tatsuya

This project is a renovation plan for a house in the Kanto region that was inherited from the client's parents.

The client wanted to rearrange the space they once shared with their parents and make layout changes to accommodate living with their own children.

Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya

One major challenge of this project was that the existing house had two floors and a total floor area of about 178 square meters, which was a bit too large for a nuclear family.

While the client desired a full renovation, the cost would increase significantly due to the large volume of the house.

Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya

Upon evaluating the required volume based on the family composition, it was determined that the first floor alone would provide sufficient space.

Therefore, the first floor was kept as a simple and minimally renovated area, with the intention of the parents potentially using it in the future, while the second floor became the main focus of the renovation

Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya

For the second-floor plan, considerations were made not only in terms of the horizontal design but also in terms of the vertical section to ensure a heterogeneous space.

Due to the close proximity to neighboring houses, which is common in urban areas, there was a limitation in creating large openings and external spaces.

Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya

To address this issue, a portion of the roof was changed to glass, and the use of sliding doors allowed for a semi-outdoor space that could be opened to the outside, creating a healthy floor resembling a "courtyard" or "veranda" where one can experience natural light and air.

In terms of finishes, special attention was given to the flooring to allow for a direct tactile understanding of the spatial changes.

Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya

Different materials such as tiles, hardwood, sisal, and FRP were selected to emphasize variations in texture for each section of the space.

Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya


Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya


Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya
Home For Family
© hirota tatsuya


Home For Family
Section A
Home For Family
Section B


Home For Family
Roof Structure Diagram
Home For Family
Plan - Roof
Home For Family
Plan - Site
Home For Family
Plan - Floor