Based in Tokyo, we offer a wide range of services from interior design & construction to the complete renovation of an entire building.
We can also provide assistance for rental properties.
Our English speaking agent can assist you with your inquiry so please feel free to contact us.
You can check some photos of our past renovation works here.
The construction of the residential space started by building from a skeleton along with our partner / designer. We have also proposed joinery, home furnishing, curtains and rugs. The design was completed in order to create a relaxing atmosphere that suited the lifestyle of our customer.
This residence meets the request for a high-quality design of the children’s room and the entire residential space, allowing the residents to have a comfortable living space. Home furnishing, joinery, curtains, wall painting …etc were carefully planned/chosen through discussions between the interior designer and customer in order to complete a living space that perfectly matched what they had in mind.
What We Do
In recent years, the Japanese residential properties are increasingly popular among foreigners.
These people are not only those who have been posted in Japan, but they also include many who have been attracted to the values of Japanese real estate properties.
However, communication proves to be a difficulty in search of a property in Japan. We have received consultations from developers as well as real estate agencies regarding the difficulty to find the right design company capable of understanding and meeting requests for specific layouts of rooms and special interior design due to the language barrier.
ONE DESIGNS offers services to our customers with our expert knowledge in English.
Although Japanese apartment have many building restrictions with renovations, with ONE DESIGNS experience and expertise , we can meet your requests involving the reconstruction of the building from skeleton.
ONE DESIGNS provides the highest quality workmanship and service to our clients.
Architectural /Interior design and construction of buildings
Our English speaking agent can help you with our experienced and talented team with knowledge in buildings and interior design
Proposal and arrangement of furnitures /curtains/ lighting/electronic appliances
Assistance for searching properties
We can help both rental and purchased properties
Apart from residential, we can also help with renovations of properties purchased for investment purposes
We also offer services for office design and hotel renovation.
ONE DESIGNS Co.,Ltd.
Ryoshin Onarimon Bldg.7F，
Umeda pacific building 3F,
2-5-10 Sonezaki, Kita-ku, Osaka,
4-14-24 Chiyoda, Naka-ku, Nagoya, Aichi
Interior Depot (Warehouse)
Kiba 2-13-20, Koutou-ku, Tokyo
135-0042 Japan Milano Office(Representative Office)
Via Nino Bixio 17 Milano, 20129 Italia
1st class registered architect
Special construction license
Registered real estate agent
Registered temporary staff agency
Registered medical equipment distributor
Total 594 employees, 57 bases across the country
Koyou Holdings Co.,Ltd.
Koyou Bussan Co.,Ltd.
Koyou Rentia Co.,Ltd.
Koyou Service Co., Ltd.
Koyou Logix Co.,Ltd.
Koyou Innotex Co.,Ltd.
The provided personal information will be used for the following purposes.
(1) Sales/ rental/ delivery of products and relating aftercare services
(2) Notification of information regarding new products/ services
(3) Confirmation of details and responding to inquiries
Information provided by customers will be appropriately handled by KOYOU Holdings Co., Ltd.
based on the personal information protection policy of the KOYOU Group.
*ONE DESIGNS is one of the group companies of KOYOU Group.