A Small Multi-Generational Home in Japan by KASA Architects

This rather meek and quiet small house has been designed for a father, his daughter and her husband. Set in the Saitama Prefecture of Japan, the building has been designed by KASA Architects who aimed to create a “1.5 household” with overlapping living spaces, rather than two separate residences.


House Ageo - Small House - KASA Architects - Japan - Exterior - Humble Homes

The site was originally home to a house built by the father 25 years ago. Obviously their needs have changed since then, and it was decided that a total overhaul was preferable than simply trying to extend or adapt the existing home.


House Ageo - Small House - KASA Architects - Japan - Living Area - Humble Homes

The new house, dubbed House Aego, has a total floor area of 904 square feet (84 square meters) spread over three levels. It measures 15-by-30 feet (4.55-by-9.10 meters) with an overall height of 26 feet (8 meters). According to the architect, the height was determined by the largest available length of metal sheeting used to clad the exterior.


House Ageo - Small House - KASA Architects - Japan - Kitchen - Humble Homes

The simple lean-to form and sleek exterior cladding give the building a minimalist appearance. There is a mix of window shapes and sizes, with any of the windows being placed higher up to maintain privacy without compromising on the intake of natural light.

House Ageo - Small House - KASA Architects - Japan - Bathroom - Humble Homes

The first floor is designed mostly for the father. It contains a small kitchen, a Japanese room that flows into a bedroom, a large storage area under the staircase, and a bathroom/washroom area that’s shared with the couple. The entryway is also shared between the two generations.

House Ageo - Small House - KASA Architects - Japan - Floor Plans - Humble Homes

The second floor contains a large open plan living and dining area, with a small galley kitchen placed in the corner. Beyond the living room there’s a decent bedroom with a walk-in closet. There’s also another toilet placed at this level for convenience. Above the bedroom you’ll find a small loft that can be used for storage or as a little relaxing getaway.

For more Japanese houses check out this home that features a large roof overhang that’s used to protect the inhabitants from the wind and the rain. Or, Nord, a minimalist Japanese house that’s inspired by religious architecture. See all Japanese houses.

Via ArchDaily
Photos: Ikunori Yamamoto

Niall Burke

Structural engineer by day, tiny house designer by night. Niall has a keen interest in small spaces, green design, and sustainability. He started developing Humble Homes while studying for his masters degree in engineering. He is the founder and managing editor of Humble Homes.

  1. Access is through the entrance porch into the hall,it looks as though the bathroom is entirely separate…?